328 FXUS66 KSEW 081605 AFDSEW Area Forecast Discussion National Weather Service Seattle WA 905 AM PDT Fri May 8 2026 .SYNOPSIS... A weak frontal system will move across Western Washington today producing little more than some cloud cover. High pressure aloft will rebuild into the area on Saturday for the return of some sunshine and somewhat warmer temperatures. Another weak system will clip the area on Sunday for additional clouds and a little cooling. High pressure will rebound once again early next week for a warming trend. && .SHORT TERM /TODAY THROUGH SUNDAY/... The latest forecast remains on track this morning with no updates. A weak upper trough will continue to swing inland across Western Washington this morning spreading clouds across the area, but little to no precipitation. The trough will be east of the Cascades by late this afternoon with some sunshine returning for most areas. With onshore flow in place, high temperatures will be similar to those of yesterday. Upper ridging rebuilds into the region tonight into early Saturday with the low level flow turning northerly. With the bump in heights and absence of onshore flow, high temperatures will climb a handful of degrees. Another system will clip the area on Sunday for additional cloud cover and perhaps a brief shower up across the Olympic Peninsula and North Interior. In typical fashion, NBM temperatures used in the forecast are underestimating the amount of cooling. Look for 5 to 7 degrees of cooling on Sunday...especially in the interior. && .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... Upper level ridging will amplify over the Pacific Northwest early next week in response to an upper trough that will dig southward well offshore. By Tuesday, 850 millibar temperatures climb to around 15C, but the low level flow stays weakly onshore which will keep temperatures in check...mid or upper 70s in the warmest spots. Ensemble solutions begin to sow some considerable uncertainty into the forecast by the middle portion of the coming week as they, perhaps unsurprisingly, have trouble resolving what ultimately becomes of a closed off upper low west of north/central California. They`re split between bringing a portion of it onshore or leaving it to aimlessly wander offshore. Either way, the main impact will be on temperatures with the precipitation outlook remaining particularly drier than what we`d expect in the first half of May. 27 && .AVIATION... Westerly to southwesterly flow aloft as an upper level ridge moves over western Washington. A mix of transient MVFR and VFR has been observed so far this morning. As the morning progress conditions should trend more VFR into the remainder of the day. SW winds generally 10 to 15 knots. KSEA...VFR conditions with high clouds around. Southwesterly winds increasing to 10 to 15 knots, with speeds decreasing after 00z, becoming light overnight. Mazurkiewicz/41 && .MARINE... Light onshore flow continues over the waters with a surface high pressure offshore. A weak front will cross over the area waters over this weekend for an increase in onshore flow. Small Craft Advisory strength winds are possible throughout the Strait of Juan De Fuca during the afternoon and evening hours Saturday and Sunday. Mazurkiewicz && .HYDROLOGY... The daily hydrology discussion has ended until the start of the next rainy season; it will only be updated during this time as needed. && .SEW WATCHES/WARNINGS/ADVISORIES... WA...None. PZ...None. && $$

870 FXUS66 KPQR 081800 AAA AFDPQR Area Forecast Discussion...UPDATED National Weather Service Portland OR 1100 AM PDT Fri May 8 2026 Updated aviation discussion. && .SYNOPSIS...High pressure aloft will keep the pattern rather benign and mostly dry over the weekend and into the middle of next week. Night and morning marine clouds will continue to be the main temperature wildcard, especially where clouds linger into midday. We may see another warming trend towards the beginning of next week. && .DISCUSSION...Now through Thursday Night...The most reliable part of the weekend forecast is the overall dry pattern, with the less reliable part being exact high temperatures. Marine stratus will continue to re-form and surge inland each night and will potentially push all the way to the Cascades, then gradually retreat back toward the coast as the day progresses. Guidance suggests earlier clearing of the marine stratus each day through the weekend for many inland locations as the upper level ridge axis moves overhead. Overall, expect coastal and higher terrain daytime highs in the upper 50s to upper 60s, with inland valleys generally low 70s to low 80s. As for Mother`s Day (Sunday), while afternoon temperatures will be slightly cooler due to a shortwave trough sliding into the region, weather will continue to look favorable for outdoor plans with inland highs in the 70s, and upper 50s to mid 60s elsewhere under a mix of sun and passing clouds. As the start of next week approaches, upper level ridging looks to return to the Pac NW though the exact pattern is still under review. If the ridge manifests, it will bring about another round of warm, daytime highs. Temperatures early next week will depend on the exact placement and strength of the upper level ridge axis. If the axis remains farther west, that will generally favor warmer daytime highs, while a more inland ridge axis placement would keep temperatures a touch cooler. Currently, model and ensemble guidance are leaning towards a warmer solution. Tuesday remains the primary day to watch as ensemble guidance continues to show substantial spread in potential temperatures and synoptic pattern. The GFS and its ensembles are pointing towards a more stagnant pattern, which has an Alaskan low remaining well west of the region and remain in the eastern Pacific through the majority of the week. This set up would keep conditions very warm and dry with 850 mb temperatures in the 14-16 degree range. On the other hand, the ECMWF and its ensembles are generally pointing towards a more progressive pattern. Again, an Alaskan low looks to develop but will take a more drastic route in comparison to the GFS. The track of this low looks to take a more direct line from the northeastern Pacific towards the OR/CA border. This solution would still keep the region warm, but slightly cooler (relatively speaking) when compared to the GFS as 850 mb temperatures range from 13-15 degrees C. Overall, current guidance suggests highs could range anywhere from the lower 70s into the lower 90s Tuesday, with similar broad spread lingering into Wednesday. Looking at the ECMWF Extreme Forecast Index does suggest that daytime high temperatures could exceed the model`s climatological extremes for early/mid May, for the start of the upcoming week. However, confidence in any specific outcome remains low at this time. -42 && .AVIATION...Stubborn stratus with areas of high level MVFR CIGs throughout the area. Onshore flow persists maintaining a steady stream of moisture which is causing the cloud cover to linger - though it is beginning to thin inland. Will see periods of high VFR clouds through the afternoon and evening, though areas along the coast may bounce around quite a bit. Winds shift to the north after 03Z Sat and there is a 30-50% chance of MVFR CIGs redeveloping overnight. Given the overall pattern have included in the TAF though there are chances that they will not form and will instead be a scattered deck. As high pressure lingers, there are around a 20% chance of IFR VIS/CIGs forming along the southern Willamette Valley and central Oregon Coast around KONP. Confidence is low, but given the wind direction, it is a common occurrence in those areas. It will greatly depend on the saturation in the area. KPDX AND APPROACHES...High level MVFR conditions with variable winds becoming northerly and VFR in the afternoon. Scattered lower clouds in the area will lead to spottier conditions until at least 20Z Fri. Overnight confidence in whether or not stratus redevelops is low as some models suggest clear conditions, while others show a return of MVFR stratus. -27 && .MARINE... Northerly winds turn southerly through the early morning hours as a weakening front moves across the waters. High pressure returns towards the end of the weekend and into the start of next week. This will bring a return northerly winds across all waters, along with a chance for widespread gusts up to 25 kt towards the end of Monday and through the middle of next week, with the breeziest conditions expected south of Cape Falcon. There remains some uncertainty within the models as to the exact path of the system. However, there is a 50-75% chance for at least isolated small craft wind gusts Monday and Tuesday for areas south of Cape Falcon, OR. Seas remain around 4-6 ft through the weekend, with seas slowly building towards 5-8 ft as the aforementioned system moves across the waters towards the start of the upcoming week. -42 && .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

302 FXUS66 KMFR 081734 AFDMFR Area Forecast Discussion National Weather Service Medford OR 1034 AM PDT Fri May 8 2026 ...Updated AVIATION discussion for 18Z TAFs... .DISCUSSION... Key Points: * Above normal temperatures continue through the forecast (70s/80s) * A dry front arrives today to cool temperatures slightly with breezy N/NW winds * Ridging returns Saturday, bringing the warmest temperatures of this week * After a slight cooldown Sunday, another warmup arrives early next week Satellite shows marine stratus across most of Coos and Curry counties, and a few showers are possible through the morning near the coast near Brookings. This is forecast to expand to the Umpqua Basin as well. A dry front arrives today, and this will bring a more westerly/northwesterly flow to the area and a slight cooldown. Highs today will be in the 60s and 70s mostly, which is still ~5-10 degrees above normal for this time of year. The north/northwest winds will be stronger this afternoon/evening with 10-15 mph winds and 15-20 mph gusts. Ridging quickly returns to start the weekend, and this will bring the warmest temperatures of this week Saturday. Most inland locations will see 70s or 80s Saturday, and the coast will reach the low 70s. The latest record for May 9 is 95 degrees (1936) for Medford and 90 degrees (1906) for Klamath Falls, and the forecast highs are a few degrees shy of these. Nonetheless, precautions need to be made when heading outdoors including staying hydrated and staying in the shade when possible. Minimum relative humidities are forecast to drop to the 10-20% range Saturday afternoon east of the Cascades. The ridge will move eastward Sunday. East side temperatures will be similar to Saturday while west side drops 5-10 degrees. RHs east of the Cascades will drop to the teens and low 20s in the afternoon with W/NW winds peaking around 12-17 mph. The coast will also see stronger winds near 10-15 mph Sunday afternoon. -Hermansen Monday and beyond: Temperatures warm up again on Monday. It looks like the GFS is forecasting a dry cold front stalling out in Central Oregon and the latest WPC surface front forecast agree with us in that assessment. The GFS 1000-500 mb layer RH looks rather dry around Bend Monday afternoon and evening, which led us to thing something is there. We`ll see another thermal trough likely develop over the Oregon coast as high pressure builds farther to the east and broad east flow develops over southern Oregon and northern California. East flow will be light, but strong enough to warm push Medford to 90 degrees in the latest NBM forecast, which still might be a few degrees to low. Mount Shasta City is currently a few degrees under the record high on Monday and Tuesday, although they could challenge the record high temperatures on Tuesday the 12th and 13th. Finally, the 12Z ECMWF ensemble is showing hints of precipitation Wednesday evening and Wednesday night. Some models(~20%) are bringing what looks like thunderstorms developing over southern Oregon and northern California. Others are showing a west to east trough progression, which might result in a cooler showery type of rain, mostly in northern Oregon. In any case, it will be something to watch in future forecast runs. -Smith && .AVIATION...08/18Z TAFs...Marine stratus is keeping MVFR levels along the Oregon coast and into the umpqua Valley to start this TAF period. Clouds in the Umpqua Valley are showing signs of breaking up on satellite, while guidance has coastal areas clearing early in the afternoon. A passing dry front looks to delay the return of marine stratus into Saturday morning. Other areas will remain at VFR levels under a stable atmospheric pattern, with mid to high level clouds due to the passing front. Some areas may see a brief period of gusty winds this afternoon and evening. -TAD && .MARINE...Updated 300 AM PDT Friday, May 8, 2026...Sub-advisory conditions will persist today and likely into Saturday as well. North winds and westerly swell increase slightly Saturday, which could bring some isolated areas of steep seas south of Cape Blanco. A thermal trough develops later this weekend, bringing increasing north winds and wind driven steep seas south of Cape Blanco that are likely to spread north by Monday. Steep seas likely continue through mid-week. && .MFR WATCHES/WARNINGS/ADVISORIES... OR...None. CA...None. PACIFIC COASTAL WATERS...None. && $$

064 FXUS66 KEKA 080711 AFDEKA AREA FORECAST DISCUSSION National Weather Service Eureka CA 1211 AM PDT Fri May 8 2026 SYNOPSIS...Temperatures will slowly warm for the interior into the weekend. A shallowing marine layer may allow for some break in gloomy clouds close to the coast into the weekend. KEY MESSAGES... -High pressure building into the weekend will warm interior temperatures. High temperatures will peak Sunday and Monday with minor to moderate heat risk for interior valleys in Mendocino, Lake, and Trinity Counties. -Gloomy coastal skies more likely to scatter and clear alongshore in the afternoons this weekend with some enhanced afternoon northerlies around Sunday. -Cooler temperatures and slight thunderstorm potential late next week. DISCUSSION...Very weak ridging will arch over the area into the weekend. This will bring slightly warmer and drier conditions to the interior. Interior highs will be slightly above normal in the mid 80s by Saturday. Building heat will help shallow the marine layer along the coast. This will both increase the potential for night time fog but also increase the potential for some coastal blue skies in the afternoon. Friday appears to be the best chance to see blue on the coast with a 60% chance of skies at least scattering out in the afternoon. Stratus looks to slightly resurge on Saturday. North wind will increase along shore Saturday afternoon but especially Sunday. Despite a stronger marine inversion, the wind may help mix out some clouds on Sunday. High pressure will continue to build Sunday and into early next week. High temperatures will most likely peak around Next Monday. Interior highs will most likely reach the low to mid 90s. Solidly above average temperatures will promote generally minor to moderate Heat Risk with the greatest risk in Lake County due to warm conditions continuing overnight. A very shallow marine layer along shore will likely make for more scattered skies in the afternoon. Should skies clear enough, coastal temperatures could reach near 60. Most model ensemble members show a cutoff low forming up along shore mid to late next week. This low will help slightly weaken high pressure and drop interior temperatures. This low could bring a threat of thunderstorms, but most models show it staying too dry and too far offshore to bring much risk. Most thunderstorm potential late next week is now more than 10% at the moment in most models. /JHW AVIATION...A weak front is pushing through N CA Friday. The marine layer deepened in response, bringing wider coverage of IFR to MVFR ceilings and light coastal drizzle. HREF shows high probabilities for the stratus to clear out Friday afternoon with increasing dry, northerly flow. Around Humboldt Bay to ACV may see longer coverage of MVFR ceilings with moisture pooling from lighter NW winds. Probabilities of MVFR ceiling drop to 30% after 21Z for ACV and 10% at CEC after 20Z. Stratus is forecast to invade the UKI valley again from the south again, taking ceilings below 1700 ft AGL. Improvement at this terminal should occur quicker, through 16-17Z. Northerly winds increase in the afternoon, with 15-25 kt gusts likely at the terminals. MARINE...Southerly winds starts to increase to fresh to strong breezes by Friday afternoon. Saturday these stronger winds are expected to begin to expand farther north with 15 to 20 kt across much of the area north of Cape Mendocino. This is expected to build the short period wind driven waves to around 4 to 7 feet. Stronger winds are expected on Sunday with near gale to gale force gusts possible by Sunday afternoon. Winds are anticipated to gradually ease early next week; however, steep seas will prevail across the coastal waters. MKK && .EKA WATCHES/WARNINGS/ADVISORIES... CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory from 9 AM Friday to 11 PM PDT Sunday for PZZ455. Small Craft Advisory from 3 AM Friday to 11 PM PDT Sunday 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

829 FXUS66 KMTR 081812 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 1112 AM PDT Fri May 8 2026 ...New AVIATION... .KEY MESSAGES... Updated at 1123 PM PDT Thu May 7 2026 - Warming and drying trend will continue through the early part of next week - Temperatures are forecast to peak on Monday - Moderate risk for heat-related illnesses for sensitive populations across the interior early next week && .UPDATE... Issued at 849 AM PDT Fri May 8 2026 Despite the marine layer around 2,000 feet in depth, low clouds are quickly dissipating across the interior this morning. This trend will continue through late morning and by the afternoon low clouds will be limited to coastal areas. Thus, mostly sunny conditions are forecast for this afternoon with the warming trend continuing. The ongoing forecast remains on track at this time with no updates anticipated this morning. RGass && .SHORT TERM... Issued at 1123 PM PDT Thu May 7 2026 (Tonight through Saturday) Widespread low clouds have pushed inland from the coast, covering the bays and into some of the interior valleys. Expect chances for pockets of fog overnight, with the strongest chances in the North Bay. The marine layer`s influence will be stronger than last night, that along with the blanket of lower cloud cover will keep overnight temperatures mild. Most areas will see lows in the 50s and upper 40s. Only far interior valleys and higher peaks will see lows as cold as the mid 40s. Friday will start on the cloudy side, and that cloud cover looks to linger into the late morning and even the early afternoon for some areas. The duration of the cloud cover will keep coastal and slightly inland areas on the cooler side compared to the areas that stay clear. Inland cloud cover will start clearing in the mid morning, however areas around the bays will keep cloud cover into the late morning and early afternoon. Portions of the immediate coast looks to keep cloud cover through the day with moderate to breezy winds. This will keep temperatures on the coast in the lower 60s, then the 60s and 70s for areas more inland, and into the 80s for areas not experiencing the morning cloud cover. A few areas in the far interior portions of Monterey Co look to break 90 degrees once again. Friday night will see the affects of the building ridge to the north with a compression of the marine layer and a reduction in the overnight inland push of coastal stratus. This means that cloud cover will still be prevalent along the coast, but will struggle to enter the SF Bay and reach more of the inland areas. Additionally, the inland push of coastal stratus looks to be much later, more so into the night than the evening. With a weaker marine influence, reduced cloud cover, and building ridge, many more of the inland areas to break into the 80s for Saturday. Coastal areas will stay low 60s, and the slightly inland areas stay in the 70s, but most areas away from the coast look to break 80. A few of the more inland areas look to break into the mid 90s than previous days. && .LONG TERM... Issued at 1123 PM PDT Thu May 7 2026 (Saturday night through next Thursday) The compression of the marine layer and building of the ridge continues Sunday and Monday, with Monday continuing to look like the hottest day of the forecast. For Monday itself: Most of the interior valleys look to break into the 90s with widespread 80s for all but the near-coastal areas seeing the 60s and 70s. The ridge and increasing pressure will form a thermal belt, causing much warmer lows on the higher peaks (60s and a few 70s) and will allow for those peaks to break into the 90s for Monday afternoon. Model trends continue to show notable cooling Tuesday, but it will still be on the hot side. The ridge begins to push east and a through deepens in the pacific leading to weak onshore winds along with a dissipation of the thermal belt. From there, models split off in the movement of said trough. Some outputs place it in the Northwest, putting us into stronger zonal flow. Others place it farther south into the Bay Area, leading to drizzle and much cloudier conditions. Then there are some hits that the trough forms a cut off low in the middle of the Pacific, calling for continued weak onshore flow. Each of these scenarios call for a cool-down into the mid to late week, but offer fairly different magnitudes. Be sure to keep checking back as the forecast develops. && .AVIATION... (18Z TAFS) Issued at 1029 AM PDT Fri May 8 2026 Marine layer cleared out sooner than this time yesterday at KSTS and South Bay sites but should clear at the remaining terminals by Noon PDT. Expect VFR conditions through this afternoon and much of the overnight except for the Monterey Bay Terminals. The return of stratus later tonight is more uncertain than the previous couple of nights, with low confidence in the exact timing and extent overnight into Saturday morning. Overall, guidance is leaning toward cigs to develop later during the overnight, closer to sunrise with less of a marine layer intrusion expected and weak fetch of offshore flow at around 2kft. Vicinity of SFO...VFR cigs are expected by Noon PDT and should persist through the remainder of today into early Saturday morning. Exact timing of MVFR/IFR cigs is low confidence, with clearing expected by late Saturday morning once they do develop, with VFR expected for the remainder of the TAF period after clearing. SFO Bridge Approach...Similar as SFO. Monterey Bay Terminals...Confidence in MVFR/IFR cigs developing over the Monterey Bay terminals later this evening is higher than terminals to the north. Less influence from weak offshore flow aloft and better more persistent marine layer influence. KSNS is expected to clear sooner with terrain influenced circulation over Monterey Bay helping pull stratus back while maintaining coverage over KMRY through the end of the TAF period. && .MARINE... (Today through Wednesday) Issued at 849 AM PDT Fri May 8 2026 Fresh to strong northwest breeze continue today and will persist through the weekend as rough seas continue to build. Rough seas will begin to ease later Sunday into Monday in response to winds becoming moderate to fresh northerly breezes. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...Small Craft Advisory from 3 PM this afternoon to 9 PM PDT this evening for Mry Bay. Small Craft Advisory from 3 PM to 9 PM PDT Saturday for Mry Bay. Small Craft Advisory until 3 AM PDT Monday for Pt Arena to Pt Reyes 0-10 nm. Small Craft Advisory until 9 PM PDT Sunday for Pigeon Pt to Pt Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60 NM-Pt Pinos to Pt Piedras Blancas 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm. Small Craft Advisory until 9 AM PDT Monday for Pt Arena to Pt Reyes 10-60 NM. && $$ SHORT TERM...Murdock LONG TERM....Murdock AVIATION...JM MARINE...JM 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

547 FXUS66 KOTX 081730 AFDOTX Area Forecast Discussion National Weather Service Spokane WA 1030 AM PDT Fri May 8 2026 .KEY MESSAGES... - Breezy to locally gusty winds Friday afternoon and evening, and again on Sunday. - Widespread minor HeatRisk into next week. This level of heat primarily affects those who are sensitive to heat. - Cold water temperatures pose a high risk for cold water shock and hypothermia for anyone who unexpectedly falls in. Wear a life jacket if recreating on or near the water. && .SYNOPSIS... A prolonged period of above normal temperatures will continue into the middle of May. Conditions will be dry. Winds will be gusty Friday and again Sunday, especially in Central Washington. && .DISCUSSION... Today through Tuesday night: Model ensembles are in good agreement with the longwave pattern. It features a longwave ridge residing over the West with a pair of shortwave disturbance pushing through across the Northwest. The first disturbance moves through later today with a cold front passage around mid to late afternoon. Mid to high level clouds will increase early in the day and then clear out as a cold front sweep across between 1:00 and 4:00 PM in the afternoon. Low levels of the atmosphere will remain too dry for any precipitation with this front. Winds will however be on the increase in the afternoon. The pressure gradient will be tighter across the Cascades where stronger gusts up to 30-40 mph with a near certainty of gusts greater than 30 mph occurring around Wenatchee to Chelan out onto the Waterville Plateau. Gusts of up to 40 mph will be more localized and largely reserved for exposed ridges along the east slopes of the Cascade Mountains, but also will see gusts of this magnitude across the Waterville Plateau as well. There is a 40-60% chance for winds of 25-35 mph occurring across the Moses Lake Area and Columbia Basin into the West Plains an on the Palouse. Strong cross winds may make driving a little difficult especially for high profile vehicles. These winds across any recently worked fields may also result in patchy blowing dust. Choppy water can also be expected across area lakes and will pose a risk of capsizing for anyone on any small crafts such as a canoe, kayak, or paddle board. Make sure to be water safe and wear those life jackets. The next shortwave disturbance then pushes through Sunday afternoon- evening. It will bring another surge of westerly winds through the Cascades where similar magnitude of winds in the 30-40 mph range is expected. As with the cold front today, there will be an increase in mid to high level cloud cover along the front, but not enough moisture lower down for any precipitation. Both of these frontal systems will be dry and any dry grass present will be susceptible for rapid fire spread. Good news is that we are still a bit early in the season for mush receptive fuels to carry fire. Temperatures will remain above normal and warm. There will be a significant bump up in our temperatures on Tuesday when widespread 80 degree temperatures are expected. Tuesday may be the warmest day of next week, but there is a lot of uncertainty thereafter by the middle part of next week. Wednesday through Friday: Model ensembles diverge much more by the time we get into the middle of next week. Models are in fairly good agreement with a trough of lower pressure digging across the eastern Pacific for Tuesday; however, there are differences with the ensemble cluster of how much of this energy will swing through around Wednesday. Almost half of the ECMWF Ensemble members pushes across another fairly robust cold front with a third round of gusty westerly winds. They also reflect more in the way of moisture along the front compared to these next two drier cold fronts we`re set to see move through. Any rain we see doesn`t look to be particularly significant but it would at least be something. Then there is a good chunk of the GEFS ensemble members that digs most of the energy with the trough and closes off a low pressure circulation well off of the California coastline. This scenario keeps the potential for our very warm temperatures to continue and may even see some 90s for our warmer spots. Minor to localized moderate HeatRisk will be possible for this Tuesday/Wednesday period depending how quickly energy off of the Pacific next week weakens the ridge in place. /SVH && .AVIATION... 18Z TAFS: VFR conditions will prevail through the period. A dry cold front will sweep through the region Friday afternoon and Friday evening bringing increased westerly winds. There is a chance for blowing dust in the late afternoon and evening for KEPH-KMWH as gusts increase to around 25-30 kt which may bring brief visibility restrictions. Mid to high level clouds will increase today but will clear out around 21-23z for KEAT- KMWH and 23-02z for KGEG-KSFF-KCOE-KPUW-KLWS as the front passes through. Calmer, dry conditions expected overnight and Saturday. FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence for VFR conditions for all TAF sites except KMWH Friday afternoon as gusty winds may bring blowing dust. /JDC ----------------------- 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 73 46 74 47 79 48 / 0 0 0 0 0 0 Coeur d`Alene 69 44 71 46 76 47 / 0 0 0 0 0 0 Pullman 68 42 69 46 75 46 / 0 0 0 0 0 0 Lewiston 75 46 75 48 81 50 / 0 0 0 0 0 0 Colville 75 42 79 45 79 44 / 0 10 0 0 0 0 Sandpoint 68 44 72 46 75 46 / 0 0 0 0 0 0 Kellogg 69 43 71 45 80 48 / 0 0 0 0 0 0 Moses Lake 78 43 78 49 81 46 / 0 0 0 0 0 0 Wenatchee 75 48 80 54 80 50 / 0 0 0 0 0 0 Omak 80 45 81 53 81 47 / 0 0 0 0 0 0 && .OTX WATCHES/WARNINGS/ADVISORIES... WA...None. ID...None. && $$

679 FXUS66 KPDT 081743 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 1042 AM PDT Fri May 8 2026 .KEY MESSAGES... 1. Breezy to windy through the gaps today 2. Dry and warm conditions will persist through the week 3. Pattern shift Tuesday will bring chances of mountain showers && .DISCUSSION... Currently satellite shows some mid level clouds forming over central OR with high clouds across the remainder of the region. Another dry and cool night on the docket. Low temperatures this morning will be in the mid to upper 40s across much of the region with the Basin seeing low 50s (70-90% confidence). Models show a shortwave rippling around the ridge bringing with it increased winds through the mountain gaps. Winds will be strongest through the Kittitas Valley with winds between 25-35 mph with gusts to 55 mph expected (70-80% confidence). There is a Wind Advisory in effect from 11 AM Friday to 11 AM Friday for these winds. Winds through the Gorge will be elevated to near 15-20 mph with gusts to 30 mph with 70-90% of the HREF raw ensembles in agreement. Winds will also be elevated along the foothills of the Blues with winds of 15-20 mph and gusts to near 30 mph with 70-90% of the HREF raw ensembles in agreement. Models show once the shortwave dissipates, winds will return to `normal` across the region with winds settling back to diurnally driven. Models show the upper level ridge to be in place over the region with no signs of movement through the remainder of the week and over the weekend. Dry and warm conditions will remain through the period with in house calculations showing temperatures to be anywhere from 5 to 10 degrees above normal today steadily increasing to 15-25 degrees above seasonal normal by Tuesday. The shortwave the models show coming across the region will bring slightly cooler temperatures today with temperatures in the low to mid 70s across much of the region with 80-90% of the HREF raw ensembles in agreement. The Basin will see temperatures in the low 80s. As we move through the weekend, the ridge with rebound and temperatures will steadily increase with Sunday being the warmest day over the weekend with temperatures in the low to mid 80s across much of the region with high 70s elsewhere (70-80% confidence). Models show the ridge remaining overhead through Tuesday when they show an upper level system making its way towards the PacNW. Clusters show there to be a variance between the timing an position of the system. ECMWF and the Canadian are in closer agreement with an upper level low moving in with southwest flow aloft. GFS is slow to bring the low in as well as bringing the low in lower towards the coast of California. Regardless, all models show the breakdown of the ridge leading to increased chances of mountain precipitation and cooler temperatures. Confidence in the forecast thus far is low/moderate (30-50%). 90 && .AVIATION /18Z TAFS THROUGH 18Z SATURDAY/... There is a surface cold front approaching the region that will influence weather from west to east through Saturday afternoon. High and occasional middle layer clouds (above 10k ft) will be scoured out completely by Saturday, maintaining VFR conditions at all terminals. Increasing high pressure will promote gusty afternoon winds for most of the terminals (in the 20 to 30 knots range) for This Afternoon, but return to light winds for Saturday. Russell/71 && .FIRE WEATHER... With the dry and warm conditions, daytime RHs will see lows in the teens, especially through central OR through the week becoming a bit more widespread by Tuesday. Moderate overnight recoveries tonight with increasing recoveries through the weekend. && .HYDROLOGY... Naches at Naches remains above action level and is expected to remain as such through the week. (90% confidence) && .Preliminary Point Temps/PoPs... PDT 46 77 50 79 / 0 0 0 0 ALW 50 77 53 80 / 0 0 0 0 PSC 49 81 53 85 / 0 0 0 0 YKM 46 81 52 83 / 0 0 0 0 HRI 48 80 51 82 / 0 0 0 0 ELN 43 77 49 74 / 0 0 0 0 RDM 38 84 46 81 / 0 0 0 0 LGD 41 77 45 82 / 0 0 0 0 GCD 40 80 44 86 / 0 0 0 0 DLS 48 83 55 77 / 0 0 0 0 && .PDT WATCHES/WARNINGS/ADVISORIES... WA...Wind Advisory from 11 AM this morning to 11 PM PDT this evening for WAZ026. OR...None. && $$ DISCUSSION...90 AVIATION...71 FIRE WEATHER...82 HYDROLOGY...86

500 FXUS65 KREV 080720 AFDREV Area Forecast Discussion National Weather Service Reno NV 1220 AM PDT Fri May 8 2026 .KEY MESSAGES... * Breezy afternoon winds are likely with a weak system to our north today. * A warming and drying trend continues through the weekend with above average high temperatures. * Near record heat is becoming increasingly likely from Sunday through Tuesday. && .DISCUSSION... Upper level ridge continues over the region this morning leading to clear skies and light winds. Although, patchy fog is still likely over the Martis Valley early this morning. Later today, a quick and weak shortwave trough will be passing through the PacNW resulting in an increase of our typical westerly winds. Therefore, expect gusts in the 20-30 mph range, especially in areas north of I-80. Afternoon highs will be similar to yesterday, 80s in western NV valleys and 70s or lower for the Sierra and higher elevations. By tonight, the upper level ridge is reestablished keeping the gradual warm up trend going through early next week. Afternoon temperatures over western NV/NE CA valleys will be in the low 90s, while in the Sierra will be in the low 80s. These temperatures are 15-20 degrees above average for this time of the year. NWS HeatRisk is also showing areas of moderate heat with a 15-80% chance of reaching this category across most valleys. Furthermore, expect several daily high temperatures records to be broken between Sunday and Tuesday. As the ridge axis moves east from the Eastern Pacific into the Four Corners area next week, subtropical moisture will start to be advected north in the backside of the ridge. By Tuesday afternoon, several models are highlighting the return for chances of showers and thunderstorms in the Sierra and other area mountains. Current chances are at 15% or less, but models are diverging in the solution of other disturbances in our vicinity and to our north that could result in higher probabilities of rain and storms for the Sierra, NE CA and far western NV. Temperatures will start a cooling trend with the additional moisture and cloud cover, but highs will remain above average for the foreseeable future. -HC && .AVIATION... VFR conditions expected through the next 24 hours. However, periods of IFR to LIFR conditions persist at KTRK between 11-16Z. Winds will be from the west between 10-15 kts with gusts to 25-30 kts from 18-03Z. Otherwise, expect light and variable winds. -HC && .REV Watches/Warnings/Advisories... NV...None. CA...None. && $$

513 FXUS66 KSTO 081929 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 1229 PM PDT Fri May 8 2026 For additional details on weather and expected impacts over the next 7 days, please visit weather.gov/sto/briefing. .KEY MESSAGES... - Increasingly hot and dry conditions through early next week, with widespread Moderate HeatRisk Monday and Tuesday. - Hottest Days Monday and Tuesday with triple digit temperatures and daily record highs possible. - Slight cooling trend from Wednesday onward, with increased delta breeze influence. && .DISCUSSION... ...Today through Thursday... A warming and drying trend continues today as ridging builds over the area and begins to progress eastward. Widespread Minor HeatRisk is expected today and through the weekend, with areas of Moderate HeatRisk in the Valley. High temperatures today are forecast to be in the 80s in the Valley, with weekend temperatures reaching the low to mid 90s. Lingering troughing influence will somewhat temper daytime highs and provide overnight relief through Sunday. This may also lead to some marine stratus intrusion in the mornings, especially on Saturday. Early next week, on Monday and Tuesday, daytime temperatures will climb again, with widespread Moderate HeatRisk in the Valley both days. Valley highs have potential to both meet or exceed local records, as well as reach triple digits in some locations. The NBM has a 30 to 50% chance of 100 degrees or more in the northern San Joaquin Valley, as well as in the central Sacramento Valley (particularly in eastern Glenn and Colusa Counties, and Butte County). Due to the potential impacts of both the high temperatures and warmer overnight lows in these locations, we have issued a Heat Advisory from 11am on Monday through 8pm on Tuesday. Areas closer to the Delta will see much better overnight relief on Monday and Tuesday, though daytime temperatures will still be quite hot. Be sure to practice heat safety! Drink plenty of fluids, stay in an air-conditioned room or in the shade during the heat of the day, and consider checking in on those more susceptible to heat. Ensembles depict the ridge breaking down towards the middle of next week which will result in a gradual cooling trend from Wednesday onward, however temperatures will still be 5 to 15 degrees above normal. && .AVIATION... General VFR conditions are expected over the next 24 hours. Surface winds generally 12 kts or less except near the Delta, where winds to 15 kts and gusts to 20-25 kts are possible. Local gusts up to 15 kts across portions of the southern Sacramento and northern San Joaquin valleys after 21z Saturday. && .STO WATCHES/WARNINGS/ADVISORIES... Heat Advisory from 11 AM Monday to 8 PM PDT Tuesday for Butte County Below 1000 ft-C. Stanislaus County including Modesto- Eastern Colusa County-Eastern Glenn County-W. Stanislaus County Above 1000 ft & I-5. && $$

780 FXUS65 KMSO 080806 AFDMSO Area Forecast Discussion National Weather Service Missoula MT 206 AM MDT Fri May 8 2026 .DISCUSSION... KEY MESSAGES: - A strong ridge brings dry conditions and high temperatures into the 70s and 80s through early next week. - Near-record temperatures next Tuesday (May 12), with highs running 20 degrees above normal. Global ensembles remain in strong agreement (>90% confidence) for a prolonged period of warm and dry weather across the Northern Rockies today into early next week. This pattern is being driven by a strong ridge of high pressure. Temperatures will peak on Sunday and Tuesday as weak shortwaves move through the ridge, allowing for deepening southwest flow and strong warm air advection. Tuesday next week appears to the hottest day of the spring thus far for many locations if the forecast holds, with temperatures reaching into the mid-90s in lower elevations of Idaho and low-mid-80s across western Montana valleys. The current forecast has a high of 90F for Salmon, compared to the historical daily record high of 89F, set in 1993 (station period of record 1967-present). Further to the north, Missoula has a high temperature forecast of 87F, with the current record high of 91F also set in 1993. Jumping back to the near-term, a weak disturbance will move eastward into the Northern Rockies this afternoon. Mid-high level clouds will increase, along with west-northwest valley wind breezes of 15-25 mph. Shower activity will be limited, with activity focused along the divide in northwest Montana. Looking into the extended forecast, confidence begins to decrease by Wednesday and Thursday. Model guidance typically struggles with the ridge breakdown timing, and this event is no different. Ensemble model cluster analysis suggests a 25% chance for the ridge to breakdown on Wednesday, with probabilities increasing to 50% by Thursday. The remaining members suggest the ridge will continue to bring warm and dry conditions through the end of the week so stay tuned! && .AVIATION...VFR conditions will be the main story across the Northern Rockies for the next 24 hrs. A weak disturbance will approach from the west by this afternoon, leading to an increase in mid-high level clouds, with cloud bases generally between 10,000-15,000 ft. Surface winds will increase between 10-15kts with periodic gusts near 20kt this afternoon. Winds will decrease after 09/0100Z, with valley areas becoming light and variable overnight. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...None. ID...None. && $$

692 FXUS65 KBOI 081710 AFDBOI Area Forecast Discussion National Weather Service Boise ID 1110 AM MDT Fri May 8 2026 .UPDATE...Updated aviation discussion. && .KEY MESSAGES... - Continued warm, dry, and breezy through Friday with temperatures around 10 degrees above normal. - Dry cold front Friday afternoon leading to slight cooling Saturday. - Temperatures warming to 15-20 degrees above normal next Sunday through Wednesday. && .SHORT TERM /Through Sunday Night/... Issued 356 AM MDT FRI MAY 8 2026 A ridge of high pressure will remain over the area through the short term with breezy northwest winds during the afternoons. Areas of smoke possible from fires in OR. A system will pass by to the north on Friday afternoon, bringing breezy conditions and slightly cooler temperatures on Saturday. The upper level ridge rebounds quickly on Sunday with much warmer temperatures. Some locations in the Snake Basin and lower valleys will reach 90 degrees for the first time this year. && .LONG TERM /Monday through Friday/... Issued 356 AM MDT FRI MAY 8 2026 The long-term forecast period will continue to see unseasonably warm and dry conditions. A weak and dry cold front will steer across the region early Monday and bring breezy afternoon winds. A strong ridge of high pressure will build into the region Tuesday through midweek, bringing temperatures 15-20 degrees above normal, with temperatures in the Snake Plain potentially reaching the mid 90s on Tuesday. Considerable uncertainty remains over the next pattern midweek through the end of the week, with long-range ensembles still indicating some likelihood of southwest monsoonal moisture steering into the area or a potential shortwave trough digging from the west coast and bringing a cooling trend. && .AVIATION /18Z Friday through Saturday/... Issued 1110 AM MDT FRI MAY 8 2026 VFR. Surface winds: W-NW 10-20 kt with gusts to 20-30 kt this afternoon, Strongest near KTWF/KJER. Then variable 5-10 kt overnight, except W-SW 10-15 kt with gusts to 20-25 kt near KTWF/KJER. Winds aloft at 10kft MSL: W-NW 10-20kt. KBOI...VFR. Surface winds: NW 8-12 kt with gusts to 20 kt this afternoon. Then NW 5-10 kt overnight. Weekend Outlook...VFR. Surface winds W-NW 5-10kt with gusts up to 25 kt near KMUO/KTWF/KJER Saturday afternoon/evening, becoming SW-SE 5- 15kt Sunday. A cold front late Sunday will return NW gusts of 20-30 kt. && .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 AVIATION.....NF SHORT TERM...KA LONG TERM....JY

086 FXUS65 KLKN 080700 AFDLKN Area Forecast Discussion National Weather Service Elko NV 1200 AM PDT Fri May 8 2026 .KEY MESSAGES... * Warming trend well underway today, and last through the rest of the week * High pressure will be the dominant weather maker across the Great Basin, signaling a prolonged stretch of dry weather * Record high temperatures are possible at several area climate sites beginning Sunday and into early next week && .UPDATE... Issued at 1155 PM PDT Thu May 7 2026 The latest model run maintains consistency in the building ridge over the SW CONUS. Impacts to the region continue to be prolonged dry weather well into next week and the potential for record setting high temperatures beginning Sunday and continuing into the early portion of next week. No significant changes to the forecast are needed at this time. && .DISCUSSION... (Tonight through next Thursday) WEATHER PATTERN OVERVIEW: A familiar pattern returns for this week as a warming trend kicks off for the second week of May. The result will be a prolonged period of dry conditions, and warming temperatures for Nevada through at least the middle of next week. Winds will be generally West to southwest at 10 mph to 20 mph with occasional gusts up to 30 mph possible. Temperatures will be the main story with daytime highs in the 70s and 80s through Saturday. Then as the ridge strengthens and amplifies over the west Sunday into early next week, highs will reach the 90s for many locations, which means that for this time of year, temperatures will be approaching, and may exceed record territory for a few spots. FORECAST CONFIDENCE & DEVIATIONS: There is high confidence for warming temperatures and dry conditions through Wednesday of next week. There is high confidence for a period of near record to record heat starting Saturday, and lasting through Wednesday. && .AVIATION... VFR conditions are forecast through Friday evening with breezy west to southwest winds of 10KT to 20KT with gusts up to 30KT possible. Remnant mid level moisture will generate FEW to SCT convective build-ups for KEKO, KELY, and KENV through Friday afternoon. No moisture is expected at this time from these build ups. && .FIRE WEATHER... High pressure building in across the much of the west this week will lead to elevating fire weather concerns as dry conditions continue through the middle of next week. Warming temperature are forecast to reach near to, or exceed record highs by the late weekend. Breezy afternoon west to southwest winds of 10 to 20 mph with gusts up to 30 mph, will combine with the temperatures to drop Humidity levels to the teens and single digits through at least Wednesday of next week. && .LKN Watches/Warnings/Advisories... None. && $$ DISCUSSION...98 AVIATION...98 FIRE WEATHER...