264 FXUS66 KSEW 032133 AFDSEW Area Forecast Discussion National Weather Service Seattle WA 233 PM PDT Wed Jun 3 2026 .SYNOPSIS... Cooler temperatures are expected through the weekend as low pressure lingers over the area. Isolated showers are expected through Friday, with chances for thunderstorms in the Cascades. A more widespread thunderstorm threat exists on Saturday as the low pressure system parks overhead. Unsettled conditions linger into early next week. && .SHORT TERM /TONIGHT THROUGH FRIDAY NIGHT/... The main line of showers is moving through Puget Sound this afternoon, with weak convergence zone activity expected this evening. Rainfall has not amounted to much if anything in this band of activity, as the lower atmosphere is still relatively dry following yesterday`s heat. Additionally, a few lightning strikes have been noted deep in the north Cascades toward the eastern slopes, east of Diablo and Newhalem. This activity will continue over the next several hours. Weak high pressure will build in on Thursday, but will ultimately behave more like zonal flow. Expect cloudy conditions in the morning, breaking out to partly cloudy in the afternoon with highs in the 60s to low 70s. Deep low pressure in the Gulf of Alaska will drift south on Friday, ejecting a shortwave off the parent low and bringing in enough moisture for another round of scattered showers and isolated thunderstorms (10-20% chance) to the Olympics and portions of the central and northern Cascades. Highs on Friday dip back into the low 60s. && .LONG TERM /SATURDAY THROUGH WEDNESDAY/... The aforementioned low pressure system will traverse directly overhead on Saturday, increasing the favorability of more widespread area thunderstorms in the afternoon. Current guidance suggests a 20-30% chance of thunderstorms on Saturday across western Washington. Right now, the primary hazards will be lightning and gusty/erratic winds. The low moves east on Sunday, clearing things up a bit but warming temperatures up around 4 to 6 degrees into the upper 60s. Unsettled weather persists into early next week as more low pressure systems drop in from the Gulf of Alaska. While there are some positioning discrepancies within the ensembles as it pertains to the low pressure, general consensus is reasonably consistent with it lingering through the first half of next week. Beyond then, potential scenarios start to diverge. && .AVIATION... Southerly flow aloft will become westerly this evening as an upper level trough traverses the area. VFR conditions continue with upper level clouds as a frontal system approaches offshore. As the system moves through this evening, MVFR to IFR conditions will develop along the coast. In the interior, most places will be low-end VFR to higher-end MVFR, except over northern King/southern Snohomish counties where a convergence zone is set to develop late this evening and persist into early Thursday morning, where MVFR cigs will be more likely. Ceilings will slowly lift and scatter during the morning on Thursday. S/SW winds 8-15 kt with gusts to 20 kt will ease to around 5-10 kt overnight and remain like so into Thursday. Winds switch to N at PAE, but the convergence zone looks to remain north of the Seattle terminals. KSEA...VFR conditions continue through tonight, then lowering to low end VFR/high end MVFR after around 06-09Z Thu. Ceilings look to start to lift and scatter around 16-19Z Thur. SW winds prevail through the TAF period, generally around 8-12 kt. 62 && .MARINE... A frontal system will continue to traverse the area waters this afternoon into tonight. A surface ridge will build in quickly behind the front offshore. Winds will increase through the Strait of Juan de Fuca this evening, allowing for the Small Craft Advisory to continue. Winds will ease slightly Thursday morning but remain above thresholds through Thursday evening, when the surface ridge offshore begins to ease. A broad low pressure system will move in from the Gulf of Alaska Friday into the weekend, which will allow for onshore flow to continue. Weak pushes will continue down the Strait of Juan de Fuca each afternoon/evening, with the push on Saturday evening being the most likely to warrant additional headlines. Another frontal system looks to approach and move through the area waters early next week. Seas remain 6-8 ft or less through the next seven days. 62 && .FIRE WEATHER... Rain from the showers progressing through western Washington has struggled to culminate in anything measurable, largely evaporated by a drier atmosphere from yesterday`s heat. Relative humidity this afternoon is generally between 30 to 45 percent, despite the clouds and cooler temperatures. The next period to watch will be Saturday as an expanded threat of thunderstorms is forecast for the area. Lightning will be a primary hazard, and depending on the moisture accompanying each thunderstorm, may pose a risk to drier areas of grasses/cured fuels. Preceding cool conditions (and live fuels still growing and in the green up phase) will limit holdover risk as a rapid warmup is not expected. 21 && .SEW WATCHES/WARNINGS/ADVISORIES... WA...None. PZ...Small Craft Advisory until 11 PM PDT Thursday for Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca. && $$

939 FXUS66 KPQR 032151 AFDPQR Area Forecast Discussion National Weather Service Portland OR 251 PM PDT Wed Jun 3 2026 .SYNOPSIS...A shortwave trough exiting the region will maintain isolated showers across northwest Oregon and southwest Washington this afternoon. A deeper trough shifts southward into the region Friday to Saturday, increasing onshore flow and returning more widespread chances for precipitation. Slight chances for thunderstorms Friday and Saturday afternoon. Drier weather returns Sunday before another trough returns chances for precipitation early next week. && .SHORT TERM...Today through Friday night...Radar imagery as of early Wednesday afternoon depicts scattered showers across northwest Oregon and southwest Washington as an upper-level shortwave trough swings through the region. This trough will quickly exit eastward this afternoon, leading to decreasing showers through this evening. Following this quick-moving system, dry weather and sunny skies return on Thursday as dry westerly flow sets up over the region. Westerly winds at the surface will generally be light tomorrow, except for the central Columbia River Gorge and Upper Hood River Valley where westerly winds will be breeziest and gust up to 30 mph. On Friday, a cooler and wetter pattern returns as a deeper trough drops approaches the Pacific Northwest from the Gulf of Alaska. As this upper trough moves in, it will push a weak front into northwest Oregon and southwest Washington. This will return more widespread chances for precipitation, with the highest chances over southwest Washington and the north Oregon coast, Coast Range, and Cascades. Given the showery nature of this system, rainfall amounts will vary across the area and the highest amounts will ultimately depend on where showers set-up. Overall, showers will be non-impactful. Chances for 24 hour precipitation exceeding 0.25 inch from 5 AM Friday to 5 AM Saturday are around 60-80% from Tillamook to the south WA coast, 50-70% across the south WA and north OR Cascades, 20-30% across the Cowlitz Valley, and 5% or less for the Willamette Valley and Upper Hood River Valley. Given the northern track of this trough, chances for precipitation are highest as you go further north. In addition, there is a 10-15% chance for thunderstorms across these areas as instability increases due to cold air aloft along with sufficient lift from the trough. Any passing thunderstorms could produce lightning, brief heavy rain, erratic winds, and/or small hail. Onshore flow will also increase as this upper trough moves in. West-southwesterly winds won`t be too impactful across most areas with gusts up to 20 mph along the I-5 corridor, however, typical breezy spots during onshore flow like the central Gorge and Upper Hood River Valley could gust up to 35-40 mph. There is also a 5-15% chance for isolated wind gusts exceeding 45 mph through these areas as well, with higher chances (25-35%) for higher terrain and exposed ridgetops. -10 && .LONG TERM...Saturday through Tuesday...The vast majority of ensemble members are in agreement that the aforementioned upper- level trough will shift over the Pacific Northwest on Saturday, maintaining rain showers across northwest Oregon and southwest Washington through Saturday afternoon. There still remains some uncertainty on exact rainfall amounts due to the showery nature of the precipitation. This trough still maintains it`s more northerly track with us sitting on the southern edge where there is less moisture. At the same time, we are sitting in the right entrance region of the jet streak which is often associated with more energetic weather. Combine this with the divergent flow, rain, and orographic effects, cannot rule out another threat for thunderstorms in the afternoon. Of the two days (Friday and Saturday), Saturday is the most potent day with CAPE exceeding 150 J/kg in some locations. Therefore, there is a 15-30% chance for thunderstorms Saturday afternoon from Salem and Lincoln city northward, with the highest chances across southwest Washington and the Portland-Vancouver Metro Area. This would again bring the threat for lightning, brief heavy rain, erratic winds, and/or small hail. Drier weather briefly returns on Sunday as a shortwave ridge passes over the Pacific Northwest. By Monday, about 75% of ensemble members are showing some sort of broad troughing and below-average 500 mb heights returning to the area. While this would return widespread chances for precipitation and cooler temperatures, there still remains uncertainty on the exact magnitude and track of this trough. The other 25% of ensemble members suggest zonal flow with dry weather on Monday. Greater uncertainty follows on Tuesday with exactly how this trough exits the area (if it does), but we`ll still maintain chances for light, non-impact precipitation. -10/27 && .AVIATION...Radar imagery at 21Z Wednesday showed isolated light rain showers beginning to dissipate over the area. Expect predominately VFR ceilings and visibilities to continue through this evening, aside from IFR to MVFR conditions at KONP. Chances for IFR to MVFR ceilings increase tonight into early tomorrow morning both inland and at the coast. By 12Z Thursday, chances for ceilings below 3000 ft increase to 25-50% for inland TAF sites, except 60-75% at KSLE and KEUG. Chances for ceilings below 3000 ft range between 75-95% at KAST and KONP between 21Z Wednesday and 12Z Thursday. KPDX AND APPROACHES...Aside from a few sprinkles now through 00Z Thursday, expect mainly dry conditions to continue with VFR ceilings/visibilities and southwest winds around 5-10 kt. There is a 30-40% chance for ceilings below 3000 ft between 08-17Z Thursday as lower clouds forming along the Cascade foothills attempt backbuilding westward towards the KPDX terminal. -23 && .MARINE...Buoy observations from early to mid Wednesday afternoon showed seas around 5 to 6 ft with southerly winds around 10 to 20 kt. Winds were gusting as high as 23 kt at times at buoy 029, however wind gusts of this magnitude are not expected to last long and are mainly associated with an ongoing frontal passage. As this front exits Wednesday evening/night, winds will veer to the northwest while weakening in strength. Seas are expected to remain around 5 to 6 ft as a westerly swell persists. Seas then build to 6-8 ft at 11 to 12 seconds late Thursday night into Friday morning as a weak frontal boundary approaches the water. This front will also bring increasing westerly winds with gusts up to 20 kt. A secondary front arrives on Saturday, bringing a shift to northwest winds. However, wind speeds are not expected to increase much with this frontal passage. The time period with highest wind speeds will likely occur on Monday as stronger system moves over the waters, bringing south winds up to 20-25 kt and seas approaching 9-10 ft. -23 && .PQR WATCHES/WARNINGS/ADVISORIES... OR...None. WA...None. PZ...None. && $$ www.weather.gov/portland Interact with us via social media: www.facebook.com/NWSPortland x.com/NWSPortland

915 FXUS66 KMFR 032340 AFDMFR Area Forecast Discussion National Weather Service Medford OR 440 PM PDT Wed Jun 3 2026 .DISCUSSION...Updated Aviation section... && .AVIATION...04/00Z TAFs...VFR is present inland, while areas of IFR/MVFR remain in place along the coast. Mainly virga exists near and west of the Cascades as a weak front has been passing, and drier conditions return later today. The passing front is bringing gusty west to northwest winds to areas east of the Cascades through this evening. Lingering cloud cover could keep MVFR and local IFR in place along the coast. A reinforcing push of marine stratus overnight is expected from Cape Blanco northward, and into the Umpqua Valley (including Roseburg) will continue the mix of IFR/MVFR until around 17Z on Thursday morning. && .PREV DISCUSSION... /Issued 108 PM PDT Wed Jun 3 2026/ DISCUSSION...After a warm start to the week, a passing front today will bring more seasonal temperatures to far northern California and southern Oregon. A few showers are accompanying this front today, but very little of the precipitation is reaching the ground, and what has reached the ground has done little more than speckle the pavement. Some gusty winds are also moving into the area as the front passes, but even the highest speeds are safely short of Advisory levels. Low amounts of instability will be present over northeastern Lake County this afternoon, supporting around a 5-10% chances for isolated thunderstorms. Colder air will settle into the area tonight behind the front, with overnight lows dropping to around 5 degrees below normal. east of the Cascades, frost is expected, and with the growing season beginning there, a Frost Advisory has been issued. See PDXNPWMFR for more details. The upper level pattern switches more towards zonal flow behind the front will keep seasonal temperatures in the forecast through the rest of the week, until the next trough arrives this weekend. While the center of low passes to the north of the area, the trough axis will gradually pass over the area Friday into Saturday, bringing another round of afternoon gusty winds, and a slight chance for light showers over Coos and Douglas counties on Saturday. Areas in Modoc, Lake, and Klamath counties will be under frost/freeze concerns again Saturday night, with overnight lows potentially dropping below freezing in northern Klamath and Lake counties. Behind the trough, seasonal warmth returns under shortwave ridging early next week, with the potential for another upper level trough and cold front arriving with light precipitation chances by midweek. MARINE...Updated 1230 PM PDT Wednesday, June 3, 2026...A weak front is bringing light showers over the waters, but with no significant impacts expected. Relatively calm wind and sea conditions are expected into this evening. Behind the front, northerly winds increase across area waters and are expected to build steep seas south of Cape Blanco tonight into Friday morning. These winds ease as another system passes to the north on Saturday. But, increasing north winds and steep wind driven seas are forecast to return late Saturday into Sunday, and again early Monday into Tuesday. && .MFR WATCHES/WARNINGS/ADVISORIES... OR...Frost Advisory from 3 AM to 8 AM PDT Thursday for ORZ029>031. CA...Frost Advisory from 3 AM to 8 AM PDT Thursday for CAZ083>085. PACIFIC COASTAL WATERS...Small Craft Advisory from 8 PM this evening to 8 AM PDT Friday for PZZ356-376. && $$

129 FXUS66 KEKA 032237 AFDEKA AREA FORECAST DISCUSSION National Weather Service Eureka CA 337 PM PDT Wed Jun 3 2026 .SYNOPSIS...Dry weather along with near-normal temperatures through the reminder of the week. Enhanced west to northwest winds through the channeled terrain and higher terrain this afternoon and evening, shifting to the coast Thursday afternoon. Widespread breezy to gusty winds possible Friday and through the weekend, with low interior relative humidity values. && .KEY MESSAGES... - Near-normal temperatures through the reminder of the week. - Breezy west-northwest winds through the channeled terrain and higher ridges today, then shifting to the coast on Thursday. - Widespread breezy to gusty winds each afternoon and evening Friday and through the weekend, with low RH values promoting locally elevated fire conditions across the interior. - Dry weather through Sunday, with chances (15-30%) of light rain Monday and Tuesday. && .DISCUSSION...Visible satellite depicts low- to mid- level clouds across Del Norte and portions of northern Humboldt counties as a weak cold front moves through, while mostly sunny skies elsewhere. Breezy west- northwest will develop rapidly along the channeled terrain and exposed ridges in the wake of the front. Gusts from 25 to 35 mph are most likely, with locally up to around 40 mph possible. Mendocino and Lake counties will see better coverage of stronger winds, where there is a high probability (60 to 80%) for gusts over 30 mph. The combination of dry weather, warm temperatures, and gusty winds will bring a locally elevated fire weather threat for portions of Lake County (see Fire Weather section). Tonight, coastal low clouds and fog are expected to redevelop around the Humboldt Bay and vicinity, with bouts of patchy drizzle possible into Thursday. Thursday, a surface high pressure will build in. This will aid in rebounding daytime temperatures across the area on Thursday. However, highs are expected to remain near-normal for this time of the year. In addition, winds shift to the coast, with breezy north- northwest gusts of 25 to 35 mph is expected over the coastal and exposed ridges. Locally strongest winds are possible over the exposed ridges in the King Range. Expect low clouds mixing and clearing out Thursday afternoon, allowing a mostly sunny day, with more stratus redeveloping overnight around Humboldt Bay and vicinity. An upper-level trough will drive southward Friday and through the weekend, promoting temperatures cooling down 5-10 degrees. An associated weak cold front will track southward across the CWA on Friday, promoting widespread breezy west-northwest winds. Breezy conditions will prevail through the weekend, with the strongest winds over the coastal headlands and exposed ridges as the pressure gradient tightening across the area. Generally gusts from 25 to 35 mph is expected, with locally higher gusts. There is a 60-90% chances for gusts greater than 35 mph over the coastal headlands and higher terrain. Even at Lake County breezy to gusty winds are expected, with poor RH values over the higher terrain. Dry weather is expected to remain under prevailing dry weather through this weekend. Ensemble clusters suggest a troughing pattern persisting over the area through mid-next week. Precipitation chances (15-30%) of light rain return on Monday and gradually diminish on Tuesday, especially for the northern portion of the area. Uncertainty remain high regarding to the amounts of precipitation over the area for this system. /ZVS && .AVIATION...Lower Mid-level clouds around 4000-6000ft are quite persistent today over KCEC as of 20z. This is likely a result of the passing cold front, which has deepened the marine layer and lifted the cloud deck. VFR/MVFR conditions are likely at KCEC until dusk when stratus is projected to return. KACV will fair a bit better with higher ceilings around 5500-8000ft. Even with overcast skies, the flight categories have been a prevailing VFR for both KACV and KCEC. Occasional drops in visibility were the only things disrupting VFR earlier in the afternoon. Late tonight ceilings could come down below 500-1000ft with visibility obscurations bringing categories into LIFR. Probabilities for clear skies Thursday are high with models showing only Humboldt Bay and Eel river delta areas with lingering stratus into the afternoon, albeit light and sparse as the day progresses. /EYS && .MARINE...Northerly winds are building across the waters today behind a weak cold front. Advisory level wind gusts of 20-30kts will occur through the afternoon. The southern waters will see further strengthening overnight. The Gale Watch has been upgraded to Gale Warning for the southern outer zone (475). A Gale Warning has also been hoisted for the southern inner zone (455) for Thursday when stronger winds are expected to work closer to the coast. The sea state will turn steep from short period seas, and this will be the dominant wave group other than a small long period southerly swell. Hazardous seas or a high end Small Craft advisory are likely after the Gale Warnings expire early Friday morning. The Gale Warning for the southern inner waters could be extended into late Friday night. /EYS && .FIRE WEATHER...Breezy west- northwest winds will developed rapidly along the channeled terrain and exposed ridges this afternoon and evening, with gusts of 20 to 35 mph likely. Locally higher gusts are possible south in Lake County. Daytime RH recoveries are generally in the low 20s and mid 30s percent this afternoon. Locally elevated fire weather conditions are expected on zones 419 and 421 today due to low daytime RH in the upper teens to low 20s percent combine with locally gusty winds over the ridges. Tonight, onshore marine moisture will continue to promote moderate to good RH recoveries for areas below the inversion (<2000 feet). Widespread breezy to gusty winds is forecast each afternoon and evening Friday and through the weekend, with low RH values and unstable weather conditions. This will promote locally elevated fire conditions across the interior, especially for Trinity, eastern Mendocino and Lake counties higher terrain. Dry weather will prevail through Sunday, with chances (15-30%) of light rain returning on Monday and Tuesday. /ZVS && .EKA WATCHES/WARNINGS/ADVISORIES... CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory until noon PDT Thursday for PZZ455. Gale Warning from noon Thursday to 6 AM PDT Friday for PZZ455. Small Craft Advisory from 11 PM this evening to 6 AM PDT Friday for PZZ470. Small Craft Advisory from 5 PM this afternoon to 2 AM PDT Thursday for PZZ475. Gale Warning from 2 AM Thursday to 6 AM PDT Friday 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

489 FXUS66 KMTR 032359 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 459 PM PDT Wed Jun 3 2026 ...New AVIATION, MARINE... .KEY MESSAGES... Updated at 1145 PM PDT Tue Jun 2 2026 - Relatively weak cold front pushes south through our area today - Breezy to gusty onshore winds this afternoon and tonight - Notable cool down for the weekend into the beginning of next week remains on track && .SHORT TERM... Issued at 152 PM PDT Wed Jun 3 2026 (This evening through Thursday) What a contrast from yesterday to today. Wall to wall sunshine blankets the Bay Area and Central Coast this afternoon. Stronger N-S and dissipating front helped to get rid of the coastal stratus. Increased sunshine and lack of natural A/C aided in generally warmer temperatures this afternoon. Pretty impressive 24 hour trends across the North Bay with many Sonoma Co sites 10-20 degrees warmer than yesterday. For tonight and into Thursday...stratus way offshore will inch closer with additional stratus developing along the coast. Not expecting a full on marine layer push, but patchy stratus. Most coverage will be along the SF Peninsula Coast and Monterey Bay region. For Thursday, AM clouds will fade quickly leading to another sunny day across the region. Temperatures will nudge upwards by a few degrees. Far interior locations will have no issues reaching the upper 80s to mid 90s. && .LONG TERM... Issued at 152 PM PDT Wed Jun 3 2026 (Thursday night through next Tuesday) Thursday night into Friday as a little bit of rinse and repeat with some patchy coastal marine layer clouds and afternoon sunshine. Temperatures will be similar to Thursday: 60s to near 80 coast/bays and 80s to mid 90s inland. Still looking at a notable pattern change over the weekend with regards to temperatures. An upper level low/trough currently in the Gulf of AK will move through that PacNW and ultimately CA. Lower 500mb heights, deeper marine layer, colder 850mb temps will yield a drop in temperatures across the board - roughly 5-10 deg from Friday to Saturday. A more subtle cooling trend will continue into early next week. The trough will also bring more widespread night/morning clouds with coastal drizzle possible. Longer range ensemble guidance continues to suggest a few showers around the region Monday into Tuesday, but confidence is generally less than 20% at this point. If it does happen it won`t be much in the way of precip. && .AVIATION... (00Z TAFS) Issued at 459 PM PDT Wed Jun 3 2026 VFR with a mix of MVFR to IFR conditions expected tonight. Satellite shows stratus just offshore with guidance suggesting it will spread along the coast and portions of the SF Bay shoreline tonight. Confidence is lower that it will reach the North Bay and interior Bay Area airports. Stratus looks to reach OAK and SFO by 08-10Z with an earlier return of stratus expected for HAF, MRY, and SNS. Not expecting fog to develop tonight but there is some potential for visibility to decrease overnight along the coast. Vicinity of SFO...VFR becoming MVFR overnight. Gusty onshore winds continue through 05Z before winds gradually decrease overnight. Winds restrengthen during the day tomorrow but gusts should stay below 30 knots. Stratus looks to reach SFO around 09Z and will clear by mid to late morning. Confidence is highest that SFO will see MVFR CIGs but there is some potential for IFR CIGs to develop briefly. SFO Bridge Approach...Similar to SFO. Monterey Bay Terminals...VFR with IFR conditions expected overnight. Stratus is expected to return around 05/06Z with clearing occurring late tomorrow morning/early afternoon. Gusty westerly winds decrease overnight before breezy northwesterly winds develop during the day tomorrow. Not expecting fog tonight but we may see temporary decreases in visibility, particularly if a lower cloud ceiling is able to develop. && .MARINE... (Tonight through next Monday) Issued at 459 PM PDT Wed Jun 3 2026 Near gale to gale force gusts build across the northern outer waters and the coastal jet regions today into tomorrow. Seas build through the day, becoming rough tomorrow through the weekend. Conditions will slowly begin to improve into the early work week. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...Small Craft Advisory until 3 AM PDT Thursday for Mry Bay-SF Bay N of Bay Bridge. Gale Warning until 3 AM PDT Friday for Pt Arena to Pt Reyes 0-10 nm-Pt Arena to Pt Reyes 10-60 NM. Gale Warning until 3 AM PDT Thursday for Pt Reyes to Pigeon Pt 0- 10 nm. Small Craft Advisory until 9 AM PDT Thursday for Pigeon Pt to Pt Pinos 0-10 nm. Gale Warning until 9 AM PDT Thursday for Pt Pinos to Pt Piedras Blancas 0-10 nm. Small Craft Advisory until 3 AM PDT Friday for Pigeon Pt to Pt Pinos 10-60 NM. && $$ SHORT TERM...MM LONG TERM....MM AVIATION...Kennedy MARINE...Kennedy 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

165 FXUS66 KOTX 040010 AFDOTX Area Forecast Discussion National Weather Service Spokane WA 510 PM PDT Wed Jun 3 2026 .KEY MESSAGES... - Showers and a chance of thunderstorms Wednesday. - Occasional mountain shower chances and cooler late this week into this weekend. - Wind gusts 30 to 40 mph possible Friday afternoon. && .SYNOPSIS... Minor impacts are expected this week. Wednesday will see a chance for showers, with a 10% to 30% chance of afternoon and evening thunderstorms across the Inland Northwest. Behind this system, cooler and showery conditions return, with periodic breezy to windy conditions. && .DISCUSSION... This afternoon and tonight: Showers and embedded thunderstorms associated with a passing shortwave will continue through early evening, with the threat retreating to the northern Washington and Idaho Panhandle Zones late this evening into the overnight. The sharp shortwave is pivoting around the Gulf of AK low and will be bisecting WA state around 00Z this afternoon, pushing into Montana by early Thursday morning. Similar to what models were showing for this wave yesterday, it stretches as it moves east and the large-scale lift splits across the northern CWA and by the far southeast CWA. The wave will encounter CAPE values roughly between 100-400 J/kg, dew points in the mid-40s to lower 50s and 0-6km shear around 15-20kts, locally near 30kts over southeast WA and the lower ID Panhandle. Overall this is not conducive to the very strong thunderstorms, but a few could produce brief heavy downpours, small hail and gusty winds. Anywhere could see some of these locally stronger storms, but southeast WA/lower ID would have the highest risk with that stronger shear. The next highest risk will be near the north Cascades with the north split of that best lift. Gusts to 40 mph are possible in these areas. Locally heavier rains across the northern mountain will be monitored near burn scars, should they bring a threat of localized flooding. Winds in general will be gusty, from the west to southwest, especially over central WA and the Palouse with gusts near 20-30 mph. Lows will be in the 40s to low 50s. Thursday: drier weather is forecast with a flatter westerly flow and drier air, before the approach of the Gulf of AK low. Weak diffluent flow near the northeast CWA and around 100 J/kg of CAPE will keep some shower risk near the Canadian border, particularly near the northeast WA and north ID border with BC. Small chances will also be found near the Central ID Panhandle mountains. Chances wane Thursday night. It will be breezy, with west to southwest winds of 10-15 mph and gusts of 20-25 mph. Highs will be in the upper 60s and 70s, with a lows Thursday night into 40s. Friday: The Gulf of AK low pivots southeast into the area, with a strong 120kt jet cutting across the area. The area will be mostly dry, save for some rain at the Cascade crest and high mountain rain/snow or snow in the higher Cascades. Otherwise it will be dry and partly cloudy. Winds will be the more notable weather feature of the day, increasing in the afternoon to early evening to 20-30 mph and gusts of 30 to 40 mph. Winds could be locally higher. The strongest winds will be through the Cascades gaps into the upper Columbia Basin and near and downwind of the Blue Mountains into the lower Palouse/L-C Valley. The NBM shows the probability of sustained winds of 30 mph or greater at 20-40% near the Cascade gaps to the Waterville Plateau and Ephrata area, as well as just downwind of the Blue Mountains. Afternoon RH values drop to around 25-30%, locally lower. This will be a fire weather concern, especially for any starts in conducive fuels. In a general sense, this could also mean issues for high-profile vehicles, create choppy waters and cause minor tree damage. Highs will be in the upper 60s and 70s. Saturday to Wednesday: An upper trough will take hold of the West, with one low migrating across the area this weekend and another reloading the trough heading into early next week. Saturday will see a chance for showers and thunderstorms over the Cascades and northern mountains, with some high mountain snow. Winds remain breezy with speeds of 10-20 mph and gusts to 30 mph. So elevated fire concerns continue, but not as much as Friday. Sunday shower/isolated t-storm chances linger over the northeast mountains. Heading into later Monday to Wednesday broader shower chances come to the region, with the next low. At this point, none of this looks like significant precipitation amounts, but there will be embedded t-storm chances which could produce locally heavy downpours. It will remain breezy each afternoon. Highs will be in the upper 60s and 70s. Overnight lows, for the most part, will be in the 40s. Yet there are some 30s in the forecast with the potential for frost. The coldest morning is forecast to be Sunday morning, with lows in the 30s to low 40s. The coldest are forecast to be in the sheltered northern valleys and in some of the sheltered central Idaho Panhandle valleys. There is even some risk across the Upper Columbia Basin in the more outlying rural areas. /Solveig && .AVIATION... 00Z TAFs: A shortwave will push across the region late this afternoon into this evening with widely scattered showers and isolated thunderstorms through 04-06Z this evening. Weak instability in the atmosphere will limit the coverage of thunderstorms, and those that do form will have short-lived updrafts and collapse rather quickly. Best chances for scattered thunderstorms will be over northeast Washington into North Idaho generally north of Spokane-Coeur d`Alene corridor (KGEG- KSFF/KCOE) and Deer Park (KDEW). There is a 25-30% chance for thunderstorms to impact Colville (K63S), Sandpoint (KSZT), and Bonners Ferry (K65S) airports. Cannot rule out an isolated thunderstorm passing by KGEG/KSFF/KCOE/KPUW/KLWS with a probability of between 15-20%. Northwest winds will pick up at KEAT between 01-02Z with gusts up to 22-27 kts through 05Z. Winds will pick up across the rest of the Columbia Basin Thursday morning with gusts up to 18-22 kts for KGEG/KSFF/KCOE- KPUW by 13Z-16Z and continuing into the afternoon. FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence in VFR conditions to prevail through Thursday. Some model guidance suggests low stratocumulus clouds and a 20% chance for MVFR ceilings with surface heating Thursday morning. There`s that low probability a bit moisture than forecast with showers brings a brief period of MVFR conditions to KGEG/KSFF- KCOE Thursday morning. A stray thunderstorm may also necessitate amendments for KLWS/KPUW/KGEG/KSFF/KCOE through 04Z this evening, but confidence is too low for mention of thunderstorms in TAFs at 00Z issuance time. ----------------------- 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 49 73 47 71 45 63 / 40 0 0 0 0 0 Coeur d`Alene 51 70 47 69 46 61 / 40 0 0 0 0 10 Pullman 47 68 43 68 44 60 / 20 0 0 0 0 0 Lewiston 53 76 49 77 51 68 / 30 0 0 0 0 0 Colville 44 75 43 72 37 64 / 40 10 0 0 0 60 Sandpoint 49 69 46 68 44 59 / 30 10 0 0 0 30 Kellogg 50 69 45 70 46 59 / 40 10 0 0 0 20 Moses Lake 48 78 46 74 41 68 / 20 0 0 0 0 0 Wenatchee 53 76 52 71 48 67 / 10 0 0 0 0 0 Omak 49 78 49 73 43 66 / 20 0 0 0 10 50 && .OTX WATCHES/WARNINGS/ADVISORIES... WA...None. ID...None. && $$

275 FXUS66 KPDT 032331 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 431 PM PDT Wed Jun 3 2026 .KEY MESSAGES... - Light showers continue through this afternoon with isolated storms possibly developing today. - Breezy winds developing in the Simcoe Highlands and Kittitas Valley today, with winds peaking Friday. - Cooling trend through Saturday, warming early next week. && .DISCUSSION...Radar currently shows light showers across the area that will continue through the rest of the afternoon hours. Parts of the Southern Blue Mountains are seeing clearer conditions than earlier this morning, allowing for daytime heating to build into the area. This allows CAPE values to develop in the 250-500 J/kg range with 30-35 knots of 0-6km shear, bringing slight (10-20 percent) chances of an isolated thunderstorm this afternoon. Not expecting any of these storms to be severe, but heavy rain and pea size hail may impact areas where the strongest storms are present. An oncoming shortwave with an embedded cold front will push through the area Thursday/Friday, allowing pressure gradients to tighten and bring breezy to windy conditions across the Simcoe Highlands, Kittitas Valley, and the Columbia Basin. Higher winds are expected across the Simcoe Highlands and Kittitas Valley (70-90% chance) though wind values appear to be sub-advisory level with more common values of wind gusts staying at 25 to 35 mph (50-70% chance). NBM does advertise 50-70% chances of exceeding wind advisory Friday, but confidence is not great enough to warrant a wind advisory yet. The oncoming trough will bring moderate rain and snow showers across the Cascades Friday and Saturday, but will leave most of the area east of it dry due to rain shadowing. Dew points and relative humidity will remain dry and, with combination of the expected breezy conditions Friday, bring elevated fire weather concerns through parts of the Columbia Basin (see `FIRE WEATHER` below). Temperatures will cool down to the mid 60s to low 70s in lower elevation areas as a result of the systems passage. By Sunday, highs will hover in the mid to high 70s and be stable through at least through mid-next week (40-60% chance). && .AVIATION /00Z TAFS THROUGH 00Z FRIDAY/...VFR conditions to prevail through the period. Light radar returns are currently moving through the Columbia Basin, but little if no precip is currently making it to the ground according to area cameras and station observations. Nonetheless, a prob30 for light showers were included at sites PDT/ALW through early this evening. Breezy winds 12-20kts with gusts up to around 30kts will continue at sites PDT/RDM/BDN through this evening, becoming light through the remainder of the period. Site DLS will see these breezy winds through the period. Sites YKM/ALW/PSC will remain mostly light, with sites YKM/ALW seeing a gust up to 20kts this evening. Lawhorn/82 && .FIRE WEATHER...Elevated fire weather concerns expected this Friday across parts of FWZ WA691 (Columbia Basin of Washington). Concerns arise with the combination of breezy to windy and low relative humidity conditions developing. Minimum relative humidities will dry out in the 20-25% range Thursday and Friday. Breezy wind gusts will develop Friday in combination with the low relative humidity values, resulting in the potential for elevated fire weather potential. && .Preliminary Point Temps/PoPs... PDT 47 75 47 73 / 10 0 0 0 ALW 53 76 52 75 / 10 0 0 0 PSC 52 80 49 78 / 10 0 0 0 YKM 48 80 47 75 / 0 0 0 0 HRI 50 78 50 75 / 0 0 0 0 ELN 45 72 44 66 / 0 0 0 0 RDM 37 76 40 74 / 0 0 0 0 LGD 44 74 43 76 / 20 0 0 0 GCD 42 77 42 81 / 10 0 0 0 DLS 53 77 52 71 / 0 0 0 0 && .PDT WATCHES/WARNINGS/ADVISORIES... WA...Wind Advisory until midnight PDT tonight for WAZ026-521. OR...None. && $$ DISCUSSION...95 AVIATION...82 FIRE WEATHER...95

830 FXUS65 KREV 032127 AFDREV Area Forecast Discussion National Weather Service Reno NV 227 PM PDT Wed Jun 3 2026 .KEY MESSAGES... * Warm and dry conditions continue through Friday, with highs around 5 to 10 degrees above normal and areas of Moderate HeatRisk across warmer lower valleys. * Southwest to west breezes increase today and Friday, with the strongest winds expected Saturday. * Elevated fire weather concerns develop today and Friday, with a more widespread elevated to locally critical fire weather threat Saturday. && .DISCUSSION... Warm and Dry Through Friday: * Low-amplitude ridging over CA/NV will maintain a warm and very dry air mass through Friday. Highs will generally reach the upper 80s to lower 90s for western NV valleys and upper 70s to lower 80s for Sierra communities. Friday remains the warmest day, with mid 90s possible along portions of the US-95 corridor, supporting a greater extent of Moderate HeatRisk across west- central NV. Increasing Winds Today and Friday: * Weak shortwaves brushing the Pacific Northwest will tighten the surface pressure gradient at times, bringing increased southwest to west winds this afternoon and again Friday. Gusts of 25-35 mph are expected across portions of northeast CA, the Sierra, and western NV, strongest in typical wind-prone areas. Impacts remain minor but may include choppy lakes, aviation turbulence, and brief fire weather concerns where fuels are receptive. Stronger Winds Saturday, Then Cooler: * The main Pacific trough moves into the Pacific Northwest and northern CA/NV Saturday, bringing the strongest gradient and deepest mixing of the forecast period. Widespread southwest-west gusts of 30-40 mph are favored, with locally higher gusts in wind-prone corridors along US-395/I-580, US-95, and the eastern Sierra. Temperatures cool back toward early June averages Sunday into early next week. Dry conditions prevail through at least Sunday, with only low shower chances returning Tuesday-Wednesday, generally 10-20% near the Sierra/northeast CA and 5-15% across western NV. -Johnston && .AVIATION... * VFR conditions prevail with no meaningful CIG/VIS restrictions expected. The main aviation concern will be southwest to west winds this afternoon-evening, with terminal gusts generally 20-30 kt, except somewhat lighter at KTVL. FL100 winds near 30-35 kt will support turbulence and localized LLWS along and east of the Sierra. * Winds ease Thursday, then increase again Friday afternoon with similar gust magnitudes to today. Saturday remains the higher- impact aviation period, with widespread southwest-west gusts of 25- 35 kt and locally stronger gusts possible. Expect increased mountain wave/mechanical turbulence, crosswind concerns, and periods of LLWS near and east of the Sierra. -Johnston && .FIRE WEATHER... * Warm and very dry conditions through Friday will maintain very large afternoon vapor pressure deficits (40-50 hPa), especially across western NV lower valleys where RH falls into the single digits and teens. This will continue to dry fine fuels, with localized elevated fire weather concerns today and Friday where SW-W gusts of 25-35 mph overlap receptive grasses and brush. * Saturday remains the primary concern as the strongest winds arrive after several days of drying. Southwest-west gusts over 35 mph are likely across much of western NV and portions of eastern CA, with minimum RH generally 8-15% in lower valleys. Longer critical wind/RH overlap supports elevated to locally critical fire weather conditions where fuels are sufficiently cured. -Johnston && .REV Watches/Warnings/Advisories... NV...None. CA...None. && $$

141 FXUS66 KSTO 031802 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 1102 AM PDT Wed Jun 3 2026 .KEY MESSAGES... -Very warm conditions through Friday with some cooling starting Saturday through early next week. Widespread moderate HeatRisk. -Dry weather except for a chance of light showers Monday and Tuesday. -Breezy afternoon and evening winds through Sunday with low humidities bringing a few areas of elevated fire conditions. && .DISCUSSION... ...Main update to the forecast is the introduction of low chances of light rain showers Monday and Tuesday... ...Thursday and Friday... Temperature forecast still on track. NBM probabilities suggesting only a slight (less then 20%) of temperatures reaching 100 degrees. Temperatures will be above normal in the mid to upper 90s. Winds aloft will be from the west as a weather system drops south out of the Gulf of Alaska which will bring delta breezes and breezy winds at times. ...Saturday and Sunday... The pre-mentioned upper trough starts to knock down heights over the area while increasing westerly flow aloft. This will result in temperatures dropping mostly out of the 90s and into the 80s. Relative humidities remain low in the valley and combined with the gusty winds will bring a few hours and aras of elevated fire concerns through Sunday which is mainly in the north Sacramento Valley. The trouhging that sets up Saturday and Sunday will persist into early next week. Some limited moisture also will then bring a chance of a few light rain showers. The chances (generally less then 30%) look to be confined to the foothills and mountains. && .AVIATION... VFR conditions at TAF sites over the next 24 hours. Northwest surface winds sustained 10 to 15 kts with gusts 15 to 20 kts in the north/central Sacramento Valley and northern San Joaquin Valley between 22Z Wednesday and 05Z Thursday. In the Delta vicinity, west winds sustained 10 to 15 kts with gusts to 20 kts through 09Z Thursday, and again after 22Z Wednesday in the Delta and mountains. && .STO WATCHES/WARNINGS/ADVISORIES... None. && $$

427 FXUS65 KMSO 031856 AFDMSO Area Forecast Discussion National Weather Service Missoula MT 1256 PM MDT Wed Jun 3 2026 .DISCUSSION... KEY MESSAGES: - Showers and thunderstorms return afternoon hours into Thursday day. - Active weather pattern this weekend into next week. Radar imagery is showing the showers associated with the next weak disturbance currently over eastern Oregon and Washington. This feature will continue to push into north central Idaho this afternoon and then western Montana during the evening. The shower activity is expected to linger through the overnight hours into Thursday morning. A few thunderstorms could develop during the passage of this feature causing locally moderate to heavy rain, lightning and gusty winds. The majority of the region will experience light rainfall with the heaviest amounts being across north central Idaho up into the Mission mountain range and Bob Marshall wilderness. The Mission mountains could experience a half to an inch of new rainfall during the passage of this disturbance. A transitory ridge slides over the region on Friday bringing a warming and drying trend. Then a dry cold front is expected to push across the Northern Rockies on Saturday. The best probability for storm development on Saturday afternoon will be across Lemhi county into southwest Montana. The low pressure system associated with the cold front that push into the region will stretch and split on Sunday, keeping the Northern Rockies in cooler and showery conditions. A broad trough low pressure over the western United States will be the driving force of weather over the region next week. Around 62% of the long term models are showing this low pressure system moving over the region by the latter part of next week that could bring significant precipitation. && .AVIATION...High clouds will continue to stream over the region ahead of an upper wave that will bring showers and a few thunderstorms across north-central Idaho this afternoon, then into western Montana this evening, generally after 6 pm MDT then continuing overnight. Instability is modest and could be weakened by cloud-cover, but any storms that form could produce lighting, gusty winds to 40 knots, and heavy rain. Showers wane by Thursday morning. A few showers may develop across northwest Montana Thursday afternoon. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...None. ID...None. && $$

944 FXUS65 KBOI 032328 AFDBOI Area Forecast Discussion National Weather Service Boise ID 528 PM MDT Wed Jun 3 2026 .UPDATE...Updated aviation discussion. && .KEY MESSAGES... - Scattered showers and isolated thunderstorms this afternoon and evening across east-central Oregon and high terrain in central Idaho. - Hot, dry, and windy through the evening with critical fire weather conditions in the Owyhee Mountains and Magic Valley. - Gusty winds along a cold front this evening. Breezy winds through the end of the week into the weekend, with the strongest winds on Saturday. - Temperatures fluctuate late this week into the weekend between 10 degrees above normal and slightly below normal. && .SHORT TERM /Through Friday Night/... Issued 224 PM MDT WED JUN 3 2026 Light showers and overcast skies are covering most of southeast Oregon and high terrain in southern Idaho. Hot temperatures near 90F have been observed in the Upper and Lower Treasure Valleys, with some temperature moderation expected this afternoon with increasing clouds and colder air behind the front. Wind gusts will increase this evening and shift to the west, especially in the Lower Snake Plain. Red Flag Warnings are still on track for hot, dry, and windy conditions in the Owyhee Mountains and the Magic Valley, with single digit relative humidity values occurring near the Nevada border as of 1:30 pm MDT. Isolated thunderstorms (<20% chance) and showers will continue over northeastern Oregon and the West Central Mountains, with virga showers over southwest Idaho. Little to no rain is anticipated in the showers. Any stronger showers or storms that develop will bring outflow wind gusts up to 40 mph with blowing dust, but current forecast confidence is low and keeps that threat further to the northwest. Temperatures will cool off tomorrow by about 5-10 degrees, with highs in the upper 70s to low 80s expected in the lower elevations. As a ridge of high pressure quickly rebuilds over the region, temperatures will rebound back to about 10-15 degrees above normal on Friday, with very dry conditions. A strong upper level low over the Pacific will move onshore late Friday, bringing breezy conditions to southeast Oregon and the Snake River Valley on Friday afternoon into the evening ahead of a slight pattern shift for the weekend. && .LONG TERM /Saturday through Wednesday/... Issued 224 PM MDT WED JUN 3 2026 A trough will move over the Pacific NW on Saturday and Sunday bringing breezy conditions to the area and cooler temperatures. Southwest Idaho and southeast Oregon will remain in the dry slot with this system. Temperatures cool around 15 degrees from Friday to around 5 degrees below normal Saturday and Sunday. Another system moves into the Pacific NW on Monday through Wednesday. Current forecast does not reflect this system but subsequent forecasts should show increasing chances of precipitation and cooler temperatures Monday through Wednesday. && .AVIATION /00Z Thursday through Friday/... Issued 524 PM MDT WED JUN 3 2026 VFR. Isolated showers and virga continue through this evening. A slight chance of thunderstorms north and east of KMYL this evening. Surface winds: NW 10-20 kt with gusts to 30 kt this evening, strongest near KONO. Winds aloft at 10kft: W 15-25kt. KBOI...VFR. Isolated virga showers through early evening. Skies clearing by Thu morning. Surface winds: NW 10-20kt this evening. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...Red Flag Warning until 9 PM MDT Wednesday for IDZ423-424 and IDZ426. OR...None. && $$ www.weather.gov/Boise Interact with us via social media: www.facebook.com/NWSBoise www.x.com/NWSBoise AVIATION.....JR SHORT TERM...SA LONG TERM....KA

865 FXUS65 KLKN 031954 AFDLKN Area Forecast Discussion National Weather Service Elko NV 1254 PM PDT Wed Jun 3 2026 .KEY MESSAGES... * Warm and dry and breezy thru Friday * Stronger winds Saturday combine with low minimum relative humidity to produce elevated to critical fire weather conditions in the afternoon. * Active pattern early next week brings unsettled weather and cooler temperatures && .DISCUSSION... (This evening through next Tuesday) WEATHER PATTERN OVERVIEW: A shortwave grazing the northern NV border Wednesday evening is strengthening a westerly wind field pushing wind speeds to near 20 mph and gusts to near 30 mph through early evening. The wave will drift eastward by Thursday AM allowing the pressure gradient overhead to relax. The storm track over the western CONUS continues to remain north of the Great Basin into early next week. This keeps appreciable moisture away from the region through Saturday afternoon. A large upper level low however will begin to tighten the gradient again over the state by Friday night. Saturday a much stronger hot, dry, windy event is expected across northern and central NV. Current guidance has west-northwest wind speeds of 25-30 mph with gusts of 40-45 mph. Probability of gusts over 44 mph are currently very isolated across the area topping out between 55-60%. Wind Advisory products may be issued if winds continue to strengthen over future model runs. A low confidence chance of isolated dry thunder exists on Sunday afternoon for mainly eastern White Pine County though instability values have diminished with recent model runs. Beyond Saturday the parent low pressure system responsible for next weeks unsettled weather will begin to drag shortwaves through the northern Rockies. The axes` of these waves will help tighten the pressure gradient over the northern extent of the state beginning Monday. The first wave is not inspiring in terms of moisture so confidence in precipitation early next week is fairly low. Another wave riding the parent low`s southern flank sets up to impact the Great Basin by late week. FORECAST CONFIDENCE & DEVIATIONS: Moderate confidence continues for hot, dry, windy setup through the week with a stronger wind event on track for Saturday. Low confidence exists in a more unsettled weather pattern for early next week. Wind/Wind Gust grids were bolstered for the first 18 hours using HRRR/NBM90 combo. && .AVIATION... VFR conditions are expected at all terminals through Thursday afternoon with no precipitation in the forecast at this time. Wednesday PM winds will be strong at KWMC, KEKO, and KBAM gusting to near 30KTs before diminishing after sunset. Westerly wind gusts at KTPH and KELY are anticipated to range 20-22KTs before diminishing after sunset Wednesday. Afternoon wind gusts Thursday will be lighter in general across the region though KTPH and KELY are forecast to see gusts ranging 20-22KTs again through Thursday afternoon. && .FIRE WEATHER... Near critical conditions are expected through this evening in northern Nevada due to dry and windy conditions. Winds are expected to diminish Thursday before returning to enhanced on Friday, with near critical conditions forecast for fire zone 437. Winds remain elevated for Saturday, with near critical conditions forecast for all zones. Sunday will see a decrease in wind risk but an increase in risk from a low probability dry thunderstorm or two in fire zone 425. && .LKN Watches/Warnings/Advisories... None. && $$ DISCUSSION...99 AVIATION...99 FIRE WEATHER...94