545 FXUS66 KSEW 250535 CCA AFDSEW Area Forecast Discussion National Weather Service Seattle WA 850 PM PST Mon Nov 24 2025 .SYNOPSIS... Lingering showers mainly over the higher terrain will taper off overnight. Precipitation will return to the area Tuesday, with lowland rain, and mountain snow through Tuesday becoming mostly rain through the day Wednesday. Unsettled weather is expected through the holiday and into the weekend with periods of precipitation and cooler conditions. && .SHORT TERM /TONIGHT THROUGH WEDNESDAY NIGHT/... Western Washington is experiencing a brief break between systems tonight. The next in a series is slated to bring a rather wet day to the region on Tuesday as a slow moving system gradually lifts a warm front northward over the area. Impactful snowfall is expected in the passes before turning to a wintry mix Tuesday night into early Wednesday. A relative lull in precip is still expected on Wednesday before the next system arrives Wednesday night into Thanksgiving Day. Ensembles have a shown a considerable spread in solutions with this system in terms of strength, but a look at recent model runs suggests that the secondary system will come in vertically stacked. And in the absence of any jet support, it`s looking less likely that this system will be impactful in terms of winds. It will, however, be a traditionally wet Thanksgiving. Previous discussion follows with update to the aviation portion. 27 Lingering showers, mainly over the higher terrain will taper off overnight, aided by a brief period of short wave ridging. A stronger system will approach the Pacific Northwest Tuesday, with widespread precipitation beginning to move onshore during the morning. Snow levels will begin the day Tuesday 1500 to 2000 feet with snow accumulations as precipitation moves into the area - particularly through the Cascade Passes. 8 to 10 inches is possible at all of the Cascade passes before snow levels begin to rise Tuesday evening. In addition there is a chance of a wintery mix at Snoqualmie Pass during the evening hours as warmer air rides over cold easterly flow in the pass, with a 30% chance of freezing rain for a period before the pass transitions over to rain later Tuesday night. Snow levels should rise to well above 5000 feet by midday Wednesday with precipitation transitioning to rain for all but the higher ridges and volcanos. Ensembles continue to highlight a trailing system setting up a second surge of moisture with a warm front later Wednesday afternoon into to the evening. Snow levels will remain generally above 6000 feet, with the heaviest precipitation - mainly rain over the coast and Olympics Wednesday night. && .LONG TERM /THURSDAY THROUGH MONDAY/... The trailing system is expected to move into the coastal waters. Ensemble guidance at this point in good agreement at the cold front moving onshore through the day Thursday with the associated surface low moving onshore somewhere along the Washington coast to the west coast of Vancouver Island in British Columbia. The approaching surface low and its landfall will result in some breezy to gusty winds - most likely along the coast. The nature and location of the strongest winds will depend ultimately on the track of the low, and this will be one of the details going into the Holiday that will be monitored. Temperatures should cool somewhat behind the cold front into Friday, with snow levels dipping back down to around 3500 feet. Ensemble mean forecast suggest some degree an upper level ridge settling in over the Eastern Pacific Saturday into Sunday - setting up the Pacific Northwest for a cool north-to northwest flow aloft and some possibility of weak system brushing the area late in the weekend. && .AVIATION...Westerly flow aloft will continue into Tuesday as a warm front gradually lifts northward toward the area. High and mid level moisture will increase overnight ahead of this system. Brief clearing this clearing allowed for the formation of areas of LIFR across portions of the Southwest Interior this evening, but this is expected to dissipate overnight. Ceilings will deteriorate regionwide on Tuesday morning with widespread low MVFR or occasional IFR in rain persisting into Tuesday night. KSEA...Ceilings will likely straddle MVFR thresholds overnight before lowering to low MVFR or occasional IFR by mid-morning Tuesday in rain with surface visibility of 3-5SM at times. Said conditions will persist throughout the day tomorrow. Surface winds light southerly this evening backing to east/southeasterly 6 to 10 knots on Tuesday morning. 27 && .MARINE... A frontal system is expected to pass over area waters, bringing increased winds to area waters starting Tuesday morning. Winds for the coastal waters, east entrance of the Strait, and Admiralty Inlet are likely to meet small craft thresholds for which a Small Craft Advisory has been issued. Low-end gale gusts possible at times for the outer coastal waters Tuesday morning. Seas with this system will build to 7-11 ft by Tuesday afternoon, with the highest waves for the outer coastal waters. A stronger system on Thursday will bring another round of elevated winds and waves. Latest guidance highlights a 50-70% chance of gusts exceeding 21 kt for the coastal waters and Strait of Juan de Fuca. In addition, guidance suggests seas will build to 13-17 ft Thursday evening. 29 && .HYDROLOGY... A stronger weather system will move into Western Washington late Tuesday, with continued precipitation at times through Thursday. The storm total precipitation are higher today but there remains uncertainty in the QPF among models. Rivers will rise as a result of the steadier precipitation, especially for rivers off the central and southern Cascades, as well as the Olympics. Snow levels will also rise to 5500 to 6500 feet by late Wednesday. At this time, the Skokomish River in Mason County is the primary river being monitored for river flooding by Thursday. The potential is there and as such a Flood Potential Outlook for Mason County. Current rainfall and river forecasts indicate a crest on the Skokomish right around flood stage. This, as well as other rivers, will continue to be monitored. 18 && .SEW WATCHES/WARNINGS/ADVISORIES... WA...Winter Weather Advisory from 10 AM Tuesday to 4 AM PST Wednesday for Cascades of Pierce and Lewis Counties- Cascades of Snohomish and Northern King Counties-Cascades of Southern King County. PZ...Small Craft Advisory from 8 AM Tuesday to 1 AM PST Wednesday for East Entrance U.S. Waters Strait Of Juan De Fuca. Small Craft Advisory from 10 AM to 10 PM PST Tuesday for Admiralty Inlet. Small Craft Advisory from 4 AM Tuesday to 1 AM PST Wednesday for Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-Coastal Waters From Cape Flattery To James Island Out 10 Nm-Coastal Waters From James Island To Point Grenville 10 To 60 Nm-Coastal Waters From James Island To Point Grenville Out 10 Nm-Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm-Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm. && $$

795 FXUS66 KPQR 250419 AFDPQR Area Forecast Discussion National Weather Service Portland OR 820 PM PST Mon Nov 24 2025 Updated Aviation discussion .SYNOPSIS...A series of weather systems are expected to bring widespread wet conditions to much the region on Tuesday through Thursday with rising snow-levels helping to mitigate any significant travel concerns over the Oregon Cascades passes leading into Thanksgiving. That said, guidance continues to show a trend towards a cooler and somewhat drier weather pattern late weekend into early next week. Due to high model uncertainty beyond Friday, the exact impact of this pattern change is rather nebulous, however, the potential for our coldest temperatures of the season are likely within reach by Monday. && .SHORT TERM...Now through Thursday night...Current satellite and radar observations depict an area of shower activity advancing through southwest Washington and Western Oregon late this afternoon. This is all thanks to a weak mid-level shortwave and accompanying frontal boundary. Confidence is high this feature shifts out the region this evening followed by the return of dry conditions overnight. With at least partial clearing behind the front (already evident on Satellite), lighter winds, and ample surface moisture, fog will once again be a concern headed into the sunrise hours on Tuesday. Certainly can`t rule out patches of local dense fog as well, especially for more protected spots on the lee-side of the coast range towards the I-5 corridor, and Tualatin Valley, where high resolution models like the REFS project a 50-70% chance for <0.25 mile visibility. It wouldn`t hurt to factor in foggy conditions into your morning commute on Tuesday - make sure to slow down and use your headlights. Our attention then turns to our next weather system the second half of Tuesday in the form of a warm-frontal boundary ushering in a slug of warmer moist air and widespread precipitation into the Pacific Northwest. It`s worth pointing out snow-levels will initially begin around pass-level (3,000-4,000ft) on Tuesday before rapidly jumping to 6,000-8,000ft Tuesday evening/night. Model soundings do show a brief period of warm-air overrunning during this transition coupled with a weak easterly wind component near the surface in the Cascades, so after some snowfall a few hours of a wintry mix can`t be ruled near the passes before above-freezing temperatures and just rain takes hold. Otherwise, an elongated band of rainfall is expected to sit over over Western Oregon and Southwest Washington Tuesday night through Wednesday. Given the extended duration of this moisture streaming overhead and a high probability (80%+) for IVT values greater than 250kg/m/s in both the EPS and GEFS, this set-up would technically be classified as an "atmospheric river", albeit a weak one. There remains some uncertainty as to how the axis of this moisture and the heaviest relative rainfall fluctuates longitudinally, particularly on Wednesday, with most models showing a shift southward before swinging northward again later Wednesday in response to a developing low over the eastern Pacific. This may come into play for a few of our more responsive rivers in the coast range and Willapa Hills depending on where the warm-front and moisture stall, but the chances for minor river flooding appear low (<15%) - still worth keeping an eye on. Then Wednesday night into Thursday the developing low off the coast finally races onshore into either Western Washington and/or far southwest British Columbia resulting in another surge of moisture associated with a cold-front before we break into post-frontal showers late Thursday/Thursday night. Throughout this multi-day event, (Tuesday through Thursday afternoon) anticipating rainfall amounts of 2-4 inches for the coast and Coast range/Willapa Hills, 1-2 inches North Willamette Valley into the SW WA lowlands, 0.30-0.90 inch central/South Willamette Valley, and 2-4.5 inches for the Cascades (highest SW WA). -99 .LONG TERM...Friday through Monday...Late week into the weekend and beyond model uncertainty increases significantly as both deterministic and ensemble systems struggle to resolve the placement of the upper-level longwave pattern. Guidance is split as to whether another shortwave trough off the coast of British Columbia dives southward into the Pacific Northwest for Saturday, or if a high pressure ridge over the eastern Pacific weakens and shunts this feature well to our east. At the very least all models show the development of broad northerly flow over the weekend which favors a cooling trend by Sunday and Monday. Exploring the Ensemble cluster analysis for Monday in particular reveals roughly 35-40% of ensemble members between the EPS, GEFS, and GEPS favor a scenario in which a trough digs southward just east of the Cascades allowing for a colder airmass to seep into the region through the Columbia Gorge and Cascade Gaps punching temperatures well below normal (overnight lows in the mid 20s to near 30 across the lowlands). On the flip side, the other 60-65% of ensemble members keep the amplifying trough near the rockies with a more predominate ridge feature overhead resulting in less of an easterly wind influence. In any case the NBM probability for subfreezing low temperatures across the lowlands is decent (generally 45-75%) by Monday morning which`ll give us a fighting shot for the lowest temperatures of the season thus far. For reference our lowest overnight minimum temperatures from Oct through Nov are as follows: Portland 36F, Salem 32F, Hillsboro 32F, and Eugene 30F. All in all, the overall model spread is large during this period with any impacts beyond the decrease in temperatures tough to nail down - forecast confidence is low Friday onward. Definitely keep an eye on the forecast as we go through this week, especially if you have holiday travel plans over the weekend. -99 && .AVIATION...Northwest flow aloft as weak high pressure moves over the area tonight. Predominately VFR conditions this evening but still expect areas of fog and low clouds to redevelop along the coast and across the Willamette Valley overnight. By 08-09z Tuesday, probabilities for surface visibilities below 1 SM and/or LIFR/IFR cigs increase to 40-60% for all inland terminals, except 10% at KTTD due to the development of light east winds from the Columbia River Gorge. Fog and LIFR/IFR cigs will likely begin gradually lifting towards 13-16z Tuesday as widespread stratiform rain begins pushing into the region from the west. Once rain begins Tuesday morning, expect rain to persist through the day at all terminals with cigs trending towards a mix of MVFR/VFR thresholds, except IFR/MVFR at the coast and in southwest Washington. KPDX AND APPROACHES...Predominately VFR expected through 08-10z Tuesday. Fog and/or low stratus with LIFR to IFR cigs is then expected to develop thereafter (60% chance). By 14-15z Tuesday, fog will likely lift with cigs gradually trending towards MVFR or even low-end VFR thresholds as persistent rain develops. Once rain begins Tuesday morning, expect rain to persist through the day. Cigs and surface visibilities trend lower again around 00z Wednesday onward with a 60% chance for cigs below 2000-3000 ft. && .MARINE...Buoy observations from early Monday morning showed seas ranging between 7 to 8 ft with a dominant wave period around 13 to 14 seconds. Winds were out of the south to southwest at 5 to 15 kt across the coastal waters, but will become more westerly while weakening later Monday afternoon into the early evening. By late Monday evening, light offshore develops, bringing a transition to easterly winds over the waters. Offshore flow will be short-lived, as winds will veer to the south early to mid Tuesday morning ahead of the next frontal passage. The aforementioned front will move over the waters Tuesday afternoon through early Wednesday morning, bringing southerly wind gusts up to 30 kt with a 15-30% chance for gale force wind gusts up to 35 kt over the northern and central waters, except around a 50% chance over northern outer waters beyond 20-30 NM offshore. Not expecting gale force wind gusts to be frequent enough or widespread enough to justify the issuance of a Gale Warning. Therefore, a Small Craft Advisory has been issued instead. A stronger frontal system arrives Wednesday night into Thursday, bringing southerly wind gusts up to at least 30 kt with a 45-55% chance for gale force wind gusts over 34 kt for all marine zones. Seas should peak near at least 14-15 ft on Thursday. There is a 10% chance seas will peak around 16-19 ft, with a 1-5% chance seas will reach 20-22 ft. This is due to uncertainty regarding the exact strength and track of a closed surface low and the frontal system accompanying the low. Regardless of the outcome for this system, it appears winds and seas will lower significantly on Friday, especially late in the day. Winds and seas over the upcoming weekend are currently forecast to stay below small craft advisory thresholds with a period of offshore flow. -23 && .PQR WATCHES/WARNINGS/ADVISORIES... OR...None. WA...None. PZ...Small Craft Advisory from 10 AM Tuesday to 1 AM PST Wednesday for PZZ210. Small Craft Advisory from 10 AM Tuesday to 10 AM PST Wednesday for PZZ251-252-273. Small Craft Advisory from 4 PM Tuesday to 10 AM PST Wednesday for PZZ253. Small Craft Advisory from 4 AM Tuesday to 10 AM PST Wednesday for PZZ271-272. && $$ www.weather.gov/portland Interact with us via social media: www.facebook.com/NWSPortland x.com/NWSPortland

852 FXUS66 KMFR 250541 AFDMFR Area Forecast Discussion National Weather Service Medford OR 941 PM PST Mon Nov 24 2025 .DISCUSSION...Updated Aviation Section... && .AVIATION...25/06z TAFs...LIFR conditions with valley fog and low clouds are starting to develop tonight, especially in West Side Valleys. Satellite shows the fog developing in Douglas County valleys, and north of the Medford airport has lower cloud cover developing. Guidance shows increased mid and high level cloud cover continuing to stream overhead tonight, and this could limit the extent of LIFR conditions. Given recent moisture and time of year, however, odds are more likely for the lower level conditions to dominate and bring the return of LIFR conditions. Between 13 and 15Z Tuesday, there could be fog on the east side and near the Klamath Falls airport. Conditions should improve to VFR later Tuesday morning and afternoon. /BR-y/-9 && PREV DISCUSSION... /Issued 238 PM PST Mon Nov 24 2025/ DISCUSSION...Cloud cover remains behind a weak front that brought drizzly precipitation to west side areas from Sunday night into this morning. Refreshed surface moisture would help support additional fog development, but continuing cloud cover is working to both limit daytime heating and would limit nighttime cooling. Areas of patchy fog are possible, but dense fog seems less likely. A weak warm front will pass north of the area tomorrow. Northernmost Coos, Douglas, and Klamath counties may see some isolated light rain showers through Tuesday and Wednesday, but the chances of that are low to moderate (10-40%). Beyond those showers, warm air behind the front will keep conditions mild and temperatures above seasonal norms through midweek. Zonal flow being Tuesday`s front will keep bringing atmospheric moisture over the area, but without a lifting mechanism only continuing mid to upper level clouds are expected. More west side rain showers are possible Thursday, with imagery showing a surface low passing to the north and providing some instability. Current forecast amounts are light, with coastal counties getting about 0.25 inches of rainfall through the day and Douglas County getting lower amounts while other areas stay dry. Overall, Thanksgiving looks to be cloudy but uneventful. The upper air pattern will start to change on Friday and through the weekend. An upper trough will start to build over the western US, bringing northerly flow aloft over the area. The details for this development are rough and shift day-by-day. There`s some agreement for unimpactful precipitation, but confidence beyond a 50/50 chance in either direction isn`t there yet. There`s more confidence for a cooling trend for Friday through Monday. Daytime highs looks to reach seasonal norms, but overnight lows are more noteworthy. By Saturday night/Sunday morning and Sunday night/Monday morning, these could be 5-10 degrees below average. The coast would remains in the high 30s to mid 40s, while most west side valleys could be in the mid 20s to low 30s. The Umpqua Valley looks to stay a bit warmer, with forecast lows in the mid 30s. East of the Cascades, temperatures in the low 20s to mid teens are possible. While these conditions are safely short of hazard product thresholds, the duration and the areal coverage of these temperatures is worth acknowledging. Long-term deterministic imagery diverges quickly after Monday morning, making any description of this period difficult. Ensemble meteograms diverge as well, with ECMWF outcomes staying drier and GFS members seeing some light precipitation in the middle of next week. Even in the divergence, there`s nothing indicating any hazardous conditions in the long term at this time. -TAD MARINE...Updated 100 PM PST Monday, November 24, 2025...Relatively calmer conditions expected the rest of today and continuing through Wednesday. While a slight uptick in south winds is expected tomorrow, we are expecting to remain below advisory levels. A low pressure system is expected to enter the region Wednesday night resulting in hazardous conditions due to a combination of a fresh swell and wind-driven seas. At this time, we are expecting solid advisory level steep seas across all waters, but isolated areas of very steep seas may come to fruition across our waters north of Cape Blanco. These conditions are possible Wednesday night through Saturday morning. Rain showers are also likely over the waters Thursday and possibly through the weekend but uncertainty in timing/coverage does exist. && .MFR WATCHES/WARNINGS/ADVISORIES... OR...None. CA...None. PACIFIC COASTAL WATERS...None. && $$

458 FXUS66 KEKA 250815 AFDEKA AREA FORECAST DISCUSSION National Weather Service Eureka CA 1215 AM PST Tue Nov 25 2025 .SYNOPSIS...Cold overnight temperatures and patchy frost is possible today and Wednesday. Generally dry weather and warm temperatures through mid week. There is a chance of light rain and sprinkle Day for Del Norte and Northern Humboldt counties on Thanksgiving Day, followed by dry and cooler weather conditions through the weekend. && .DISCUSSION...A dry offshore flow (easterly wind) is expected to develop across the area into Tuesday, with some breezy conditions over the higher terrain. Areas of fog and patchy dense fog are anticipated along the shelter valleys, mainly in Humboldt and Mendocino counties. Lingering cold air will promote overnight temperatures to be a few degrees cooler than today`s readings, with lows in the upper 30s to mid-40s for the coastal areas and generally in the upper 30s inland. The lowest temperatures are expected for Trinity County, with temperatures as low as 28 degrees in the coldest areas like Hayfork and Ruth. A Frost Advisory is in effect until 9 AM PST this morning for northern Trinity County and Southern Lake County. A Freeze Warning is also in effect for Southern Trinity, Northern Lake, and NE Mendocino Counties until 9AM. Ridging will continue to build and strengthen over the area through the day into Wednesday, promoting quiet weather conditions with a drying and warming trend. Dry offshore flow, especially at night, will scour out some of the low-level clouds near the coast, which should lead to more afternoon sunshine compared to today. High temperatures are forecast to range from mid- to upper-50s along coast and mid-60s inland. Additional warming is expected Wednesday afternoon, with highs in the upper 60s in the warmest interior valleys. Any areas that do have fog develop overnight will likely be slow to clear and may have high temperatures that are lower, leading to lower than usual forecast confidence. A subtle shift in the weather pattern is expected for Wednesday night and Thursday (Thanksgiving Day). High pressure begins to shift eastward as a shortwave trough and its associated surface low move toward the PacNW. A weakening cold front crossing the area will bring light rain and sprinkles for Thanksgiving Day, for Del Norte and Northern Humboldt counties, with most rainfall totals under a tenth of an inch. Elsewhere, increasing cloudiness and mostly dry conditions are expected. Looking ahead for Friday and through the weekend, the general consensus between ensemble and deterministic models shows an upper- level trough dropping southward while an upper level ridge builds in the Gulf of Alaska. There is, however, high uncertainty in the position of this upper-level trough, with models showing variable solutions, especially over the weekend. The ECMWF, GFS ensemble means and clusters show similar solutions with the upper trough dropping south over land and becoming positively tilted. This solution typically leads to dry and colder weather, leading to additional inland freezing temperatures this weekend. Only ~20% of the cluster mean are showing widespread precipitation, while the ~80% suggest dry weather conditions. /ZVS && .AVIATION...High pressure is building in and offshore flow is keeping the coastal areas clear. Inland valleys are seeing fog across many of them. Some fog may creep into UKI towards morning, but confidence is low on this. The fog is expected to take its time clearing once again across the interior valleys. Tonight fog is expected to return across the interior valleys. Offshore flow is expected to be slightly weaker along the coast and it is possible some stratus will develop by Wednesday morning. MKK && .MARINE...Northerly winds are continuing to diminish this morning as high pressure moves off to the east of the area. The northwest swell continues to slowly diminish and is expected to be around 6 to 8 feet by sunrise. The winds driven waves are diminishing as the winds do. They may drop off more quickly than forecast making for quiet wind and waves on the water for the remainder of the day. The calm conditions linger through much of Wednesday as well and the swell continues to slowly diminish. Wednesday afternoon these are expected to start becoming southerly again as a frontal boundary approaches the area. The models continue to weak the southerly winds and keep the system farther north. Now it looks like the stronger southerly winds will only around 10 to 15 kt. Thursday afternoon northerly winds return and are expected to strengthen on Friday. Models are still in fairly good agreement on this. For the weekend the models have trended towards keeping the northerly winds in place. Some of the models show these northerly winds fairly strong at around 30 kt, especially in the southern waters. The next swell is expected to build in on Thursday. The most recent model runs are showing this building to 8 to 12 feet at 15 seconds. However the GFS and the Global Wave Watch (Waves from GFS winds) have been seeing some fairly big differences from run to run. So confidence is lower than normal on these wave heights. MKK && .EKA WATCHES/WARNINGS/ADVISORIES... CA... Frost Advisory until 9 AM PST this morning for CAZ107-115. Freeze Warning until 9 AM PST this morning for CAZ108-111- 114. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory until 2 AM PST early this morning for PZZ455. Small Craft Advisory until 5 AM PST early this morning for PZZ475. && $$ NOTE: The full forecast discussion is now regularly issued between 10 am/pm and 1 pm/am. Additional updates will be issued as needed. Visit us at https://www.weather.gov/eureka Follow us on Facebook and Twitter at: https://www.facebook.com/NWSEureka https://www.twitter.com/NWSEureka For forecast zone information see the forecast zone map online: https://www.weather.gov/images/eka/zonemap.png

518 FXUS66 KMTR 250538 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 938 PM PST Mon Nov 24 2025 ...New AVIATION, BEACHES... .KEY MESSAGES... Updated at 144 PM PST Mon Nov 24 2025 - Dry and mild this week - Cooler temperatures this weekend as the next system approaches - Confidence increasing for gusty offshore winds by the end of the upcoming weekend && .UPDATE... Issued at 907 PM PST Mon Nov 24 2025 Fog is creeping into the coastal North Bay, interior Contra Costa County, and just barely clipping inter Alameda County. The Byron Airport in Contra Costa County is reporting less than 1/4 statute mile visibility, fog, and overcast skies at 200 ft. The North Bay isn`t doing much better with Petaluma reporting 1/4 SM visibilities and fog and the Novato/Gnoss Airport reporting 1 1/2 SM visibilities and mist. If you are driving in the North Bay or East Bay tonight you may encounter locally dense fog. Remember to slow down, leave extra time to reach your destination, and prepare for unexpected changes in visibility while driving. Fog may spread further into the Bay Area overnight but for now confidence is highest that fog will impact the North Bay and East Bay. Otherwise forecast remains on track. && .SHORT TERM... Issued at 144 PM PST Mon Nov 24 2025 (This evening through Tuesday) A mid/upper level ridge is building into the region from the southwest and will result in a gradual warming trend through Wednesday or Thursday. As such, temperatures this afternoon will warm into the 60s across inland areas while upper 50s are expected near the coast. Overnight, we are expecting less cloud cover and fog than the previous days as weak offshore flow persist in the higher elevations across the region and will work to compress the marine layer. However, cannot rule out patchy dense fog in the North Bay valleys in responds to drainage flow in the Russian River valley and East Bay valleys as tule fog spills in from the Central Valley. Temperatures overnight are likely to range from the 40s across the interior and lower 50s near the coast. The warming trend will continue on Tuesday with the warmest interior spots in the southern Santa Clara Valley, Hollister Valley, and interior Central Coast reaching up to around 70 degrees F. && .LONG TERM... Issued at 144 PM PST Mon Nov 24 2025 (Tuesday night through next Sunday) Wednesday and/or Thursday will be the warmest days of the week as the aforementioned ridge continues to build aloft. This is when we are expecting lower 70s in the Santa Clara Valley, Hollister Valley, and interior Central Coast under mostly sunny skies. These temperatures will be up to 10 degrees above seasonal averages. From the previous forecaster: "Towards Friday into the upcoming weekend, a pattern change will occur as the ridge over the western United States breaks down, and one amplifies upstream across the Gulf of Alaska. As a result, cold Arctic air descends into the Mountain West and Central Plains states. Ensemble model guidance continues to point to this system following more of an inside slider like development in our region. In other words, the impacts of this trough fall into the windy and dry side rather than the rainy side. Still too early to tell how strong the impacts will be and where the greatest threats will occur, but the current forecast has a period of gusty offshore winds developing across the Bay Area and Central Coast late Saturday through, and somewhat beyond, the end of the 7- day forecast period. Confidence in the exact nature of the impacts will improve through the rest of the week, so keep in touch with the forecast updates for the most up to date information." && .AVIATION... (06Z TAFS) Issued at 938 PM PST Mon Nov 24 2025 Conditions vary from VFR to LIFR including a few areas of hazy skies this evening. A shallow cool frontal boundary is moving southward over the coastal waters while low ceilings, fog and tule fog are slowly advancing back into our easternmost forecast area. A stable air mass including a lower precipitable water (0.52") on the 00z (4 pm) Oakland upper air sounding compared to 0.72" 12z (4 am) this morning favors improving radiative cooling tonight and Tuesday morning. Light offshore winds per SAC-SFO 0.8 mb and WMC- SFO 2.1 mb support a reversal of maritime influence we had over the weekend (which helped limit dense fog coverage), with an increasing continental influence reaching into our forecast area, including a tule fog intrusion from the east tonight and Tuesday morning. So far not seeing any numerical weather prediction mesoscale models showing any significant boundaries forecast to disrupt the light offshore wind pattern Tuesday morning which may allow the fog intrusion to the Bay Area to linger during the day, minus incoming solar heating Tuesday. This may favor a positive feedback loop of more dense fog Tuesday night/Wednesday morning. Vicinity of SFO...VFR likely continues through the evening. There`s an increasing probability 20%-30% of IFR per recent HREF between 09z-16z Tuesday, 00z/06z SFO TAF has tempo IFR ceiling 13z-17z Tuesday, but caveat is persistent light NE-E wind may transport even lower conditions to VLIFR-LIFR during this time. It`s a low confidence forecast since it`s still many hours from now, however weather conditions and the time of year (plus recent generous early season rain) are all favorable for aforementioned conditions and it needs to be closely monitored. As such, it is a low confidence forecast as to the return and duration of VFR Tuesday, if the model forecasts are under-forecasting the extent of fog it may take longer to mix out to VFR than currently 17z advertised in the TAF. SFO Bridge Approach...Similar to SFO. Monterey Bay Terminals...Low to moderate confidence VFR continues through late evening and overnight here. Current satellite imagery supports VFR forecast to late evening at least. Nocturnal radiative cooling will set up cool air drainage winds for tonight and Tuesday morning providing a mixing wind to help prevent the development of stratus and/or fog. Cool front and air mass passes by to our west, HREF/HRRR model ouput show dry, cool air drainage mixing winds and VFR prevailing tonight and Tuesday morning. VFR continues Tuesday afternoon with winds gently shifting back to light onshore in the mid to late afternoon. Low confidence VFR forecast Tuesday evening. && .MARINE... (Tonight through next Sunday) Issued at 907 PM PST Mon Nov 24 2025 High pressure will persist over the coastal waters through mid to late week. Seas will gradually ease through the middle of the week with gentle to moderate northerly breezes. Winds will begin to increase again late week, building moderate to rough seas. && .BEACHES... Issued at 923 PM PST Mon Nov 24 2025 The Beach Hazards Statement has been extended through 10 AM PST Tuesday. A long period northwesterly swell will result in an increased risk for sneaker waves and rip currents. Breaking waves of 13 to 18 feet are expected. Sneaker waves can unexpectedly run significantly farther up the beach than normal, including over rocks and jetties. Rip currents are typically more frequent and stronger in the vicinity of jetties, inlets, and piers. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...Beach Hazards Statement through Tuesday morning for CAZ006-505- 509-529-530. PZ...None. && $$ SHORT TERM...RGass LONG TERM....RGass AVIATION...Canepa MARINE...Canepa Visit us at www.weather.gov/sanfrancisco Follow us on Facebook, X, and YouTube at: www.facebook.com/nwsbayarea x.com/nwsbayarea www.youtube.com/nwsbayarea

259 FXUS66 KOTX 250930 AFDOTX Area Forecast Discussion National Weather Service Spokane WA 130 AM PST Tue Nov 25 2025 .KEY MESSAGES... - Mountain snow impacting passes Tuesday into Wednesday. - High degree of uncertainty for valley snow potential Tuesday night into Wednesday and Wednesday night into Thursday. Light to Moderate snow on the mountain passes. && .SYNOPSIS... A warm front will push through the region late Tuesday into Wednesday bring snow impacts to the mountain passes. The midweek systems will bring the potential for light snow in the lowlands and moderate snow over the mountains but carries high uncertainty. && .DISCUSSION... Today through Thursday night: After a quiet start early today, the area becomes more active as a couples frontal waves move through the area. Clouds increase early today from the west as a warm front noses in from the west. That warm front will increase precipitation from the Cascades into central WA through the morning to midday hours, enveloping eastern WA and ID through this afternoon into this evening into the overnight. On Wednesday that potential starts to briefly shift away from central and northeast WA, focused over the southeast WA and ID Panhandle in the morning and waning. Then a more organized trough moves in from the Pacific Wednesday night into Thursday, expanding precipitation throughout the area again with the best chances returning overnight into Thanksgiving day. Chance remain high into Thursday evening, before starting to wane from the west through the late evening into the overnight. The biggest questions surround precipitation-type and amounts. Looking at the HREF precipitation-type probabilities and NBM snow levels and taking into account surface and wet-bulb temperatures and the fact colder air tends to get trapped near the Cascades, on Tuesday the best chance for snow will be near the Cascades east toward the Waterville Plateau stretching to northern mountains to start. Rain potential spreads across the Columbia Basin toward the Spokane/CdA area and Palouse, but as the afternoon transitions to evening the potential for a rain/snow mix or all snow becomes more likely, until later evening into the overnight that the rain/snow mix or all rain becomes more likely. Meanwhile all snow is more likely heading into the Idaho Panhandle Mountains. Then heading through the day Wednesday snow levels rise to around 3-6kft and further rise to around 4 to 6kft Thursday as the deeper system moves in and the warm front lifts northward. What does this translate to for snow amounts? First for today through Wednesday the most significant snow is still forecast around the Cascades, including especially Stevens (and Snoqualmie) Pass. This starts to develop this morning but the better chance for more moderate accumulations develops between 10 AM to 10 PM, before decreasing overnight into Wednesday. Snow rates could approach 1 inch per hour this evening (about 2 pm to 9 pm) per the HREF which show about 40-60% chance of that. inter weather advisories are in place for Chelan County, where 2-4 inches are expected below about 4kft and about 4 to 9 may fall above 4kft, locally higher possible in spots. Other snow will increase across the other mountain passes later this afternoon into tonight, with amounts marginal for highlights around place like Lookout Pass. Around 2-4 inches will be possible there. The other northern mountain zones could see 0.2 to 1 inches in the lower elevations, with 2 to 4 in the higher elevations. Similar could be found in the Blues and higher Camas Prairie. Away from the mountains zones, the best chance for snow will be around the Waterville Plateau, the northern Columbia Basin along the US-2 corridor and into the Spokane/CdA area and Higher Palouse. The Waterville Plateau could see 0.5 to 2 inches, locally higher over western Douglas County. Toward the Spokane/Kootenai County border and Idaho Palouse 0.5 to 1.5 inches are possible. The rest of the Spokane area and higher Washington Palouse could see 0.1 to 0.7 inches, highest near to west of Airway Heights. The lower elevations, such as Downtown Spokane and Spokane Valley may not accumulate anything. Overall there will be a wide-range of snow amounts across the CWA with this system today through Wednesday. Heading into Wednesday night and Thursday snow accumulations will largely be in the mountains. Some light accumulations may linger near Stevens and Snoqualmie Pass and Lookout Pass, but the better potential for moderate snow lifts toward Washington and Sherman where 3 to 7 inches are possible. Meanwhile rain amounts around 0.20 to 0.50 inches are in the forecast in the lower elevations. So it is tending to look like a wet Thanksgiving. Highs will largely be in the upper 30s to low 40s, with lows in the upper 30s and 30s. Friday to Monday: Models continue to show the potential for unsettled conditions this period, with more a northwesterly flow and potential for well below normal temperatures. There is good agreement in the clusters of a very strong ridge forming in the Gulf of Alaska, which would favor much cooler air than what we have recently seen to filter into the region from the north. However models continue to show a fairly large spread in actual temperatures. The best potential for precipitation will be found Friday and Saturday, then starts to decline Sunday into Monday. The best potential in this set-up overall will be around the eastern mountains and far southeast CWA. This would include mountain snow and a rain/snow mix or all rain Friday and mainly snow by Saturday. Some moderate snow is possible around the Idaho Panhandle mountains Friday and Saturday, with maybe 1 to 2 inches every 24 hours. Highs are forecast to be in the 30s and low 40s Friday, mostly 30s Saturday and mostly 30s heading into early next week. /Solveig && .AVIATION... 06Z TAFs: VFR conditions continue tonight with the exception of some brief low level stratus develop overnight with a surface inversion with MVFR ceilings for GEG-SFF-COE. Patchy fog is also possible but confidence on impacting TAF sites is low. An approaching warm front will begin to increase clouds and precip west to east toward the end of the TAF period bringing IFR-MVFR conditions. .FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: Moderate confidence MVFR ceilings for GEG-SFF-COE overnight. Low confidence on fog impacts. Moderate confidence on timing of IFR- MVFR conditions with incoming warm front and increasing rain and snow. ----------------------- Confidence descriptors: Low - Less than a 30 percent chance Moderate - 30 to 70 percent chance High - Greater than a 70 percent chance For additional probabilistic information for NWS Spokane airports,please refer to the Aviation Dashboard on our webpage: https:/www.weather.gov/otx/avndashboard && .Preliminary Point Temps/PoPs... Spokane 39 33 41 36 42 32 / 30 90 50 70 90 80 Coeur d`Alene 39 33 41 36 42 34 / 30 90 70 70 90 90 Pullman 39 32 41 36 44 35 / 30 100 80 80 80 90 Lewiston 44 39 46 40 49 40 / 30 90 60 60 60 80 Colville 38 26 40 29 40 27 / 40 80 40 60 90 80 Sandpoint 38 30 39 32 39 31 / 30 90 70 70 90 100 Kellogg 39 34 41 38 43 36 / 30 100 90 80 100 100 Moses Lake 39 33 41 36 43 30 / 60 90 30 70 70 40 Wenatchee 38 33 40 37 41 34 / 80 90 30 80 70 60 Omak 38 31 41 34 41 31 / 50 60 10 50 80 40 && .OTX WATCHES/WARNINGS/ADVISORIES... WA...Winter Weather Advisory from 10 AM this morning to 4 PM PST Wednesday for Central Chelan County-Western Chelan County. ID...None. && $$

332 FXUS66 KPDT 250545 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 945 PM PST Mon Nov 24 2025 .Updated Aviation Discussion. .AVIATION...06Z TAFS...VFR conditions currently across all sites, but an incoming system will lead to widespread MVFR ceilings with KPDT/KYKM/KALW/KPSC experiencing IFR visibilities toward the end of the period. Light rain will initiate in the early afternoon and persist through the evening, with the exception of KRDM/KBDN staying dry under VFR conditions. Winds are expected to stay light and below 10 kts through the period across all sites. 75 && .PREV DISCUSSION... /issued 304 PM PST Mon Nov 24 2025/ DISCUSSION...The shortwave trough that brought widespread breezy to locally windy conditions and light to moderate rainfall to the forecast area overnight into this morning has exited to the east. Aside from isolated to scattered light snow showers this afternoon across the Washington Cascade crest, dry conditions will continue through tonight. Breezy winds across the Columbia Plateau will continue to diminish in magnitude this afternoon, becoming light overnight as pressure gradients slacken and winds aloft decrease. Tonight, temperatures are anticipated to drop below freezing across most of the forecast area, including the lowlands, setting the stage for wintry precipitation where temperatures fail to rise above freezing Tuesday. To dive into specifics for Tuesday through Thursday, ensemble solutions generally drape a warm front and sub-tropical moisture plume (visible on satellite offshore in the Pacific) over the forecast area by late Tuesday morning. The location of the front and moisture plume as presented by ensemble members ranges from north-central Oregon to south-central Washington, with the bulk of the precipitation associated with the system likely (70 percent confidence) concentrated across the northern half of our forecast area. Meanwhile, near- to sub-freezing air at the surface is likely (70-95 percent confidence) across south-central Washington. As time progresses, solutions range from a slow- moving or even quasi-stationary frontal boundary persisting across the forecast area Tuesday afternoon through Wednesday night to a faster-moving frontal boundary that pushes into northern Washington (out of our forecast area) by Wednesday afternoon. Based on the latest 12Z and 18Z NWP guidance, a break in wintry precipitation is favored by mid-Wednesday morning, with additional periods of precipitation existing through Thursday night. So will wee see wintry precipitation in the lowlands? The NBM suggests a low probability (20-60 percent) of 1 inch or greater snowfall for the 24-hr period ending 10 AM PST Wednesday for the Kittitas Valley, with lower probabilities of less than 10 percent for the Grande Ronde and Yakima valleys. In the eastern half of the Columbia Basin and farther south into central Oregon, guidance is more confident in a warmer air mass (south of the warm frontal boundary), resulting in very low probabilities of measurable snowfall (less than 5 percent). Probabilities of measurable freezing rain have increased, and are now low-medium (generally 20-60 percent) Tuesday night through Wednesday in sheltered valleys along the east side of the Washington Cascades and Blue Mountains. Thermodynamic profiles in NWP guidance are supportive of snow Tuesday morning before transitioning to a rain/snow mix and/or light freezing rain Tuesday night into Wednesday morning. The main areas of concern remain the Washington Cascades and their eastern slopes as well as the Kittitas Valley, and Winter Weather Advisories have been issued, valid 10 AM PST Tuesday through 4 AM PST Wednesday. Confidence in advisory-level snowfall was too low (40-60 percent) for the northern Blue Mountains to issue any headlines with the afternoon forecast package. Looking ahead, an Arctic air mass is possible (a solution presented by 40 percent of ensemble members) by the weekend into early next week. Will lowland snow accompany this cooler air mass? Confidence is still too low to discuss details, so stay tuned for more details in the coming days. && .PRELIMINARY POINT TEMPS/POPS... PDT 28 45 35 47 / 0 40 70 50 ALW 33 45 37 45 / 0 40 80 60 PSC 28 42 34 44 / 0 40 70 40 YKM 28 40 30 42 / 0 60 70 50 HRI 28 42 35 44 / 0 40 70 50 ELN 26 37 28 39 / 0 70 80 50 RDM 22 50 32 55 / 0 20 30 20 LGD 24 44 33 47 / 0 30 80 60 GCD 26 48 35 52 / 0 20 50 40 DLS 34 43 38 46 / 10 60 80 70 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...None. WA...Winter Weather Advisory from 10 AM Tuesday to 4 AM PST Wednesday for WAZ026-522-523. && $$ DISCUSSION...86 AVIATION...75

629 FXUS65 KREV 250753 AFDREV Area Forecast Discussion National Weather Service Reno NV 1153 PM PST Mon Nov 24 2025 .KEY MESSAGES... * Dry and mild weather with cold mornings will prevail through Thanksgiving. * Morning inversions will produce hazy skies and reductions in air quality for lower urban valleys through midweek. * It is increasingly likely that cooler, unsettled weather returns this weekend into early next week. && .DISCUSSION... A quiet weather pattern is in store through the Thanksgiving holiday as a ridge of high pressure intensifies across the region. This will result in continued dry conditions, periods of high clouds, light winds, valley inversions, and steadily warming temperatures. Strengthening valley inversions could result in reductions to air quality in lower valleys as wind and valley mixing remains light. Expect chilly mornings with lows in the 20s and 30s for most areas except for teens in colder Sierra valleys. Afternoons will be seasonably mild as highs reach into the upper 50s to low 60s for Sierra and W.Nevada valleys. Thanksgiving day looks to be the warmest day of the week with highs near the mid-60s, particularly for communities from Reno to the Carson Valley. A transition to a cooler, breezier pattern is likely by the weekend as an amplifying ridge over the eastern Pacific allows colder, slider-type shortwave troughs to drop in from the northwest and deepen over the western U.S. The main uncertainty is precipitation potential, as ensemble clusters remain split on the exact track of these shortwaves. A more inland (slider) path would favor cooler temperatures but lighter precipitation. Current trends lean drier, with only about a 20% chance of up to 0.25 of liquid equivalent in the Sierra over a 48-hour period, and overall 20-30% chances for rain and snow showers across the Sierra and western Nevada from Saturday through Sunday. Fuentes && .AVIATION... High pressure will maintain VFR conditions and light winds through the holiday. Patchy FZFG may induce IFR/LIFR conditions at KTRK this morning. Hazy skies from valley inversions may reduce slantwise visibilities through midweek. -Salas/Fuentes && .REV Watches/Warnings/Advisories... NV...None. CA...None. && $$

288 FXUS66 KSTO 242124 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 124 PM PST Mon Nov 24 2025 .KEY MESSAGES... - Dry conditions prevail this week, with periods of breezy offshore flow and morning Valley fog - Seasonable temperatures and dry weather favored for Thanksgiving Day - Potential for unsettled weather to return this weekend, but confidence is very low on details, impacts, and timing && .DISCUSSION... ...Today-Friday... GOES-WEST imagery shows lingering patchy fog and low stratus at the time of this writing. Visibility will continue to improve through the afternoon. Upper level ridging dominates the pattern through the end of the week; coupled with the recent precipitation, fog is possible the next few mornings as well, though the spatial extent should begin to shrink starting Tuesday. Outside of the morning fog, seasonable high temperatures with periods of offshore winds are expected to continue through the week. ...This Weekend... Cluster analysis and ensemble guidance continue to suggest the potential for the upper level ridge to break down and for low pressure to develop and approach the West Coast. Confidence is beginning to increase in a minimally impactful weather pattern. Some light mountain precipitation is possible, but little to no impacts are expected from this. Breezy winds are expected Sunday into Monday as well. We will continue to monitor for any changes to this system, so be sure to check back for updates and for local forecast information at weather.gov/sto. && .AVIATION... VFR to MVFR conditions through about 08z, then 60-80% chance for IFR to LIFR conditions in the central & southern Sacramento, & northern San Joaquin Valleys, and a 20-50% chance for the same in the central and northern Sacramento Valley. Variable winds generally less than 12 kts across interior NorCal for the next 24 hours. && .STO WATCHES/WARNINGS/ADVISORIES... None. && $$

534 FXUS65 KMSO 250850 AFDMSO Area Forecast Discussion National Weather Service Missoula MT 150 AM MST Tue Nov 25 2025 .DISCUSSION... KEY MESSAGES: - Unsettled Holiday Travel (Wednesday & Thanksgiving): Light snow returns tonight/Wednesday morning. Snow levels rise and precipitation transitions to a rain/snow mix later on Wednesday for most valleys. Northwest Montana valleys remain snow into Thursday morning. - Potential Arctic Intrusion Late Week (Nov 28-30): Please monitor the forecast closely if you have post-Thanksgiving travel plans. Today through Thanksgiving: Any remaining early morning showers will diminish, leading to a quiet start to the day. However, conditions will deteriorate by this evening as a stream of subtropical moisture brings widespread light precipitation to north-central Idaho and far northwest Montana. Light snow will gradually spread eastward into Wednesday morning. Snow levels are expected to start around 2,000 feet this evening before rising above 4,000 feet by Wednesday afternoon along and south of I-90. Slick travel is a primary concern for passes such as Lookout, Lolo, and Lost Trail, as well as higher valley towns in Idaho (including Pierce and Elk City) where 2 to 5 inches of new snow is forecast. While lower valleys of western Montana should see an inch or less of accumulation, forecast road temperatures near freezing suggest a risk of localized slick spots for the Wednesday morning commute. Models continue to indicate that cold air may remain trapped in northwest Montana valleys through Thursday morning. Consequently, snow levels may linger near valley floors in these areas as moisture continues to stream overhead. While snow amounts remain generally light, minor travel impacts are possible, particularly during the morning hours. Friday: There is strong model agreement on modified Arctic air spilling over the Divide into northwest Montana by early Friday morning, driving snow levels back down to valley floors. There is a 50-70% chance of widespread accumulating snow by Friday evening for western Montana valleys as the cold air works southward. Mountain passes, especially along the ID/MT border, northwest Montana ranges and along the Divide, will likely experience periods of moderate to heavy snow. Saturday through Sunday: Forecast confidence decreases significantly regarding the depth and westward progression of a potential Arctic intrusion. The scenario breaks down as follows: -Friday Evening: There is medium-to-high confidence (70% chance) that Arctic air will bank along the Divide in northwest Montana. -Saturday: Uncertainty peaks regarding the westward push of this airmass. Approximately 30% of ensemble clusters depict Arctic air rushing across western Montana. However, the majority (70%) suggest a slower progression, resulting in only a 50% chance of the deeper cold air reaching the Flathead Valley by Saturday afternoon. -Sunday: A secondary shortwave within the northwest flow may help dislodge the Arctic air and pull it over the Divide Saturday night into Sunday (50% chance to reach the ID/MT border) but probabilities have trended slightly lower on this occurrence. Temperature Impacts: Current probabilities indicate a 70-90% chance of lows dipping into the single digits (or colder) along the Divide by Sunday morning, with a 40-60% chance for the remaining western Montana valleys. Extended Outlook (Next Week): An active northwest flow pattern continues into next week, bringing renewed snow chances and potential episodes of Arctic air spilling over the Divide. && .AVIATION...Patchy fog and stratus remain a concern this morning, with mountain obscurations continuing north of I-90. Any lingering showers will diminish early. Otherwise, VFR conditions and light winds will prevail across much of the Northern Rockies today. Conditions change this evening as a weak subtropical moisture tap and warm air advection bring fairly widespread snow to north-central Idaho and far northwest Montana, spreading eastward into Wednesday morning. Snow levels will start near 2000 feet and gradually rise from south to north on Wednesday. Expect light to moderate snow intensity, resulting in lower ceilings and reduced visibility. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...None. ID...None. && $$

211 FXUS65 KBOI 250955 CCA AFDBOI Area Forecast Discussion...CORRECTED National Weather Service Boise ID 255 AM MST Tue Nov 25 2025 .SHORT TERM...Today through Thursday night...Monday`s cold front has left our CWA 8 to 15 degrees colder than early yesterday morning, but the core of cold air will shift east of our CWA this afternoon. High temps today will be several degrees colder than yesterday in our eastern-most areas, but near yesterday`s highs in Oregon. A Pacific warm front will spread light snow across the northern third of our CWA late today through Wednesday. The southern 2/3 of our CWA will become cloudy but should stay dry. Pcpn in the north will decrease gradually from south to north later Wednesday through Thursday, but snow will also mix with or change to rain up to 5500 feet MSL. Pcpn will increase again Thursday night as the system`s cold front moves through, with snow level lowering again to about 4800 feet, changing rain back to snow. Initial snow levels (tonight through Wednesday) have also been lowered 300-600 feet from previous forecast, as NBM has become a high- outlier. This means slightly greater expected snow accumulation through Wednesday, with McCall now forecast to receive about 2.0 inches vs 1.5 inches previously. Winds will be generally light southeast through Thursday, then becoming light northwest behind Thursday night`s cold front. .LONG TERM...Friday through Tuesday...A shortwave trough digging over the Northwest region will steer a cold front across the area Friday. This cold front will bring a gradual cooling trend Friday through the weekend, gradually dropping lower elevation temperatures from the upper 40s/lower 50s Friday into the upper 30s/lower 40s Saturday and Sunday, with higher elevations seeing a drop from the upper 30s into the upper 20s. Snow levels are expected to gradually drop from the 3000-4000 ft range Friday and into the 2000-3000 ft range Saturday through Sunday. Friday will see a 30-40% chance of mixed precipitation over higher elevations. Saturday will see a 20-30% chance of rain over lower elevations and a 30-40% chance of snow over mountains. Sunday will see a weaker shortwave trough dig across the region, but with uncertainty over its digging pattern and moisture content. For now, a 20-30% chance of snow over the mountains is forecast for the early hours of Sunday. Monday through early Tuesday will see broad ridging that will bring drier conditions and a weak warming trend into the lower 40s. Long-term guidances suggest another trough from W`rn British Columbia digging into the area late Tuesday, tentatively returning a cooling trend and widespread precipitation over the area. && .AVIATION...VFR. Patchy fog overnight, mainly in sheltered higher valleys. Increasing clouds with snow showers developing over the mountains Tuesday afternoon, and mountains becoming obscured. Surface winds: variable under 10 kt for most areas and SW 10-15 kt in lower Magic Valley, becoming E-SE 5-10kt Tuesday afternoon. Winds aloft at 10kft MSL: W-NW 20-30kt increasing to W-NW 30-40kt by 00z/Wednesday. KBOI...VFR and mostly clear with few high clouds. Surface winds: SE 5-10kt overnight. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...None. OR...None. && $$ www.weather.gov/Boise Interact with us via social media: www.facebook.com/NWSBoise www.x.com/NWSBoise SHORT TERM...LC LONG TERM....JY AVIATION.....JY

750 FXUS65 KLKN 250946 AFDLKN Area Forecast Discussion National Weather Service Elko NV 146 AM PST Tue Nov 25 2025 .KEY MESSAGES... Updated at 135 AM PST Tue Nov 25 2025 * Warming trend Wednesday and Thanksgiving Day * Light precipitation possible Friday and Saturday * Colder this weekend && .UPDATE... Issued at 135 AM PST Tue Nov 25 2025 Current forecast is tracking well; no changes have been made to the current seven day forecast. && .DISCUSSION... (This afternoon through Sunday night) WEATHER PATTERN OVERVIEW: A ridge of high pressure will build northward across the Silver State today. An Eastern Pacific, upper-level area of high pressure will make landfall in Southern California tonight. This anticyclone aloft will move eastward into the Desert Southwest Wednesday. The upper-level area of high pressure will open up into a ridge of high pressure Wednesday night into Thursday. High temperatures throughout Northern and Central Nevada Tuesday afternoon will be two to four degrees below normal for this time of year. A warming trend is expected Wednesday and Thanksgiving Day. By Thursday afternoon, maximum temperatures across Northern and Central Nevada will be twelve to fourteen degrees above seasonal values. A cold front will move southeastward into Utah Friday. The southern extent of this cold front may clip Northeastern Nevada Friday, resulting in a slight chance of light precipitation. This small precipitation possibility should be confined to Northern Elko County. Another cold front will move southward across Eastern Nevada Saturday and Saturday night, resulting in a chance of light precipitation in Northern and Central Nevada. Much colder weather is anticipated this weekend. High temperatures throughout Northern and Central Nevada Saturday afternoon will be seven to nine degrees colder than Friday afternoon. Maximum temperatures across Northern and Central Nevada Sunday afternoon will be six to eight degrees below normal for this time of year. Minimum apparent temperatures Sunday night will be in the single digits in the coldest valleys of Northern and Central Nevada. FORECAST CONFIDENCE & DEVIATIONS: High forecast confidence regarding cooler weather Tuesday. High forecast confidence in a warming trend Wednesday and Thanksgiving Day. Moderate forecast confidence regarding the possibility of light precipitation Friday and Saturday. Moderate forecast confidence in colder weather this weekend. No deviations from the NBM model output. && .AVIATION... VFR conditions are expected at all terminals over the next 24 hours, with periods of high clouds and winds below 10 knots. && .LKN Watches/Warnings/Advisories...None. && $$ DISCUSSION...96 AVIATION...96