196 FXUS66 KSEW 251111 CCA AFDSEW Area Forecast Discussion National Weather Service Seattle WA 310 AM PST Tue Nov 25 2025 .SYNOPSIS... Precipitation will return to the area today, with lowland rain and mountain snow before becoming mostly rain throughout the day Wednesday. Unsettled weather is expected through the holiday before drier conditions start to emerge for the weekend. The trade off for the calmer weather will be colder overnight temperatures. && .SHORT TERM /TODAY THROUGH THURSDAY/... The lull in activity continues over W WA this early morning. Current satellite shows plenty of high to mid level clouds overhead while latest radar imagery suggests that there may be some low clouds in play as well. However, the former is preventing the latter from creating widespread fog...even though some areas may experience some patches here and there. Models remain in good agreement with activity likely holding off until the late morning for much of the area...although along the coast could see rain start in the mid-morning hours /perhaps toward the tail end of the morning commute period/. From there, soggy conditions settle in for the rest of the day before tapering off overnight and brief dry conditions emerge by Wednesday morning. Now, the main concern with this initial system will be wintery precip in the Cascades. QPFs have increased from solutions 24 hours ago, even while the timing for snow levels to lift has remained generally on track. This looks to give rise to the prospect where amounts will overpower temps, at least initially, not only allowing for snowfall hanging on a little bit longer than one would typically expect, but also a transition over to mixed or icy precip. That said, inherited Winter Weather Advisory for the Cascades of Snohomish, King, Pierce and Lewis counties looks good, with the higher snowfall amounts expected to focus on Snohomish and King counties. These two areas could see 6-8 inches of snow accumulation while the remainder max out around 6-ish. Wednesday morning starts off ridge-ish, but a secondary upper level low shifts toward the coast bringing a return to rainfall in the mid to late afternoon. Models seem to have finally reached a consensus with the track of this system, guiding it almost directly over the Columbia river. This will keep not only the remainder of Wednesday but also the bulk of Thursday wet. It is worth noting that rainfall amounts with this secondary system do not appear to be as much as today`s system, with the ensemble mean Wednesday proving to be half of the value of today. That said, the precip is more drawn out with the secondary system, over the span of 36 hours, give or take. Temps today will be akin to yesterday, perhaps a degree or two cooler with much of the lowlands still stuck in the mid to upper 40s. The benefit of the passing warm front, aside from the rising snow levels discussed above, will be a slight boost to the daytime highs for both Wednesday and Thursday, with each day finding themselves in the upper 40s to lower 50s. 18 && .LONG TERM /THURSDAY NIGHT THROUGH MONDAY/... Precip activity expected to taper off throughout Thursday night and into Friday morning before becoming generally dry by noon. This is thanks to an upper level ridge building over the eastern Pacific. Deterministic long range models and ensembles remain in sync with each other, keeping the remainder of the extended period fairly inactive as this ridge continues to hold court and remain almost stationary. That said, there are hints of shortwave systems potentially bringing Slight Chance to low-end Chance PoPs to the area toward the end of the forecast period...Sunday to Monday-ish. NBM /and thus the forecast/ hang on to PoPs perhaps a little bit longer than current solutions suggest, which is fine given that only 24 hours ago solutions were utterly scattershot. Should the current solutions remain consistent, future forecasts will likely see these PoPs erode. The trade off for the less active weather will be cooler temperatures. Daytime highs only take a minor hit, generally staying in the mid to upper 40s for the remainder of the forecast cycle. The impact will be felt in the overnight lows, which will see temps get down into the lower to mid 30s...aside from water adjacent locations, which will be just a touch higher in the mid to upper 30s. 18 && .AVIATION... Moist, W-SW flow aloft, today with rain increasing across western WA. With the rain, expect lowering clouds and MVFR conditions. Rain eases after 09-12Z tonight, then increases again by 18-21z Wednesday as the next frontal system lifts north through western WA. 33 KSEA...Lowering clouds, MVFR and rain today. Easterly surface winds around 5 kt. Moist low level air mass overnight with IFR conditions likely. 33 && .MARINE... South winds will increase today as a stronger Pacific frontal system moves in - Small Craft Advisories are in effect. Winds will ease late tonight into early Wednesday. Expect elevated winds and seas on Thursday as another strong system reaches western WA. The flow will turn more northerly and offshore late in the week, with Fraser River outflow winds possible over the weekend. 33 && .HYDROLOGY... A stronger weather system will move into Western Washington today, with continued precipitation at times through Thursday. Between the relatively quick flash of precip today and the more drawn out event Wednesday and Thursday, QPF amounts remain generally consistent, perhaps a little increased. This will still allow for area rivers to see rises the rest of this week. However, the breaks in activity could be an offsetting measure. For that reason, the flood threat for most rivers remains minimal. The Skokomish remains the outlier, as forecasts continue to advertise river levels cresting just at flood stage or a little lower. Given the borderline nature of latest forecasts, inherited Flood Potential Outlook for Mason County continues to look on track and will remain unaltered at this time. This, as well as other rivers, will continue to be monitored. 18 && .SEW WATCHES/WARNINGS/ADVISORIES... WA...Winter Weather Advisory from 10 AM this morning to 4 AM PST Wednesday for Cascades of Pierce and Lewis Counties- Cascades of Snohomish and Northern King Counties-Cascades of Southern King County. PZ...Small Craft Advisory until 1 AM PST Wednesday for Admiralty Inlet-Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-Coastal Waters From Cape Flattery To James Island Out 10 Nm-Coastal Waters From James Island To Point Grenville 10 To 60 Nm-Coastal Waters From James Island To Point Grenville Out 10 Nm-Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm-Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm- East Entrance U.S. Waters Strait Of Juan De Fuca. && $$

485 FXUS66 KPQR 251237 AFDPQR Area Forecast Discussion National Weather Service Portland OR 437 AM PST Tue Nov 25 2025 .SYNOPSIS...A series of weather systems are expected to bring widespread wet conditions to much the region on Tuesday through Thursday with rising snow-levels helping to mitigate any significant travel concerns over the Oregon Cascades passes leading into Thanksgiving. That said, guidance continues to show a trend towards a cooler and somewhat drier weather pattern late weekend into early next week. Due to high model uncertainty beyond Friday, the exact impact of this pattern change is rather nebulous, however, the potential for our coldest temperatures of the season are likely within reach by Monday. && .DISCUSSION...Tuesday through Wednesday...Fog and low stratus are being observed across much of the NW Oregon and SW Washington interior lowlands early Tuesday morning with satellite imagery indicating mid to high level clouds streaming over the area ahead of an incoming frontal system. Surface temperature observations show the central and southern Willamette Valley have fallen into the mid 30s with mid to low 30s being observed across the foothills. Expect some locally frosty conditions early this morning as temperatures could fall another couple of degrees early this morning. A weather system is slated to move inland from the Pacific later this morning through tonight, ushering in warmer moist air and widespread precipitation. As temperatures will still be on the colder side when the front initially moves in, snow-levels will initially begin around pass- level (3,000-4,000ft) before rapidly jumping to 6,000-8,000ft this evening. Model soundings continue to show a brief period of warm-air overrunning during this transition coupled with a weak easterly wind component near the surface in the Cascades, so after some snowfall, a few hours of a wintry mix can`t be ruled near the passes before temperatures fully warm to above freezing and transition precipitation to solely rain. Otherwise, an elongated band of rainfall is expected to sit over over Western Oregon and Southwest Washington tonight through Wednesday. Given the extended duration of this moisture streaming overhead and a high probability (80%+) for IVT values greater than 250kg/m/s in both the EPS and GEFS, this set-up would technically be classified as an "atmospheric river", albeit a weak one. There remains some uncertainty as to how the axis of this moisture and the heaviest relative rainfall fluctuates longitudinally, particularly on Wednesday, with most models showing a shift southward into central Oregon before swinging northward again later Wednesday in response to a developing low over the eastern Pacific. Heaviest rainfall amounts are likely to be north of Lane County with 0.5-1.25 inches across the interior lowlands and 1.25-2.5 inches across the coast, Coast Range, and Cascades with localized amounts up to 3-3.5 inches. It`s difficult to pinpoint where those localized higher rainfall amounts will be and will depend on where the front stalls. Some of the more responsive rivers in the coast range and Willapa Hills may be more impacted from the rain depending on where the front and moisture stall, but the chances for minor river flooding appear low (<15%) - still worth keeping an eye on. For the developing low off the coast bringing the next weather system, the 00z and 06z ensemble runs for the EC, GEFS, and GEPS have both slowed down the low`s progression inland and shifted the trajectory farther south into the Washington/Oregon coast. There still remains uncertainty on exactly where along the coast the low will move inland, but the majority of the ensemble members now suggest this will be somewhere between central Washington and northern Oregon instead of British Columbia as previous guidance suggested. Additionally, guidance has pushed back the onset of precipitation to be closer to sometime on Thursday morning instead of Wednesday night with the low pushing inland later on Thursday. The 01z NBM, which the current forecast is based on, hasn`t fully picked up on this transition, but if this trend continues with the 12z and beyond ensemble runs, expect the NBM to begin shifting to this scenario. Ultimately, there`s not much change in the overall impacts with this system except for potentially slightly increased winds depending on exactly where the low sets up. Current probability for 30+ mph winds are 20-40% for interior lowlands and 70-80% along the coast. Probability for 40+ mph winds drop to less than 10% across the interior lowlands and 30-45% along the coast. Rain amount forecast could fluctuate over the next few model runs, but overall not expecting a significant amount of rain, generally 0.15-0.25 inch for the central and southern Willamette Valley, 0.3-0.75 inch for the northern Willamette Valley into the SW Washington lowlands, 0.5-1.5 inches along the coast and Coast Range, and 0.5-2 inches along the Cascades. Snow levels are expected to remain above pass level until early Friday, but by then conditions are expected to become showery with limited precipitation accumulation. The rest of Friday into the weekend and beyond, model uncertainty increases significantly as both deterministic and ensemble systems struggle to resolve the placement of the upper- level longwave pattern. Guidance is split as to whether another shortwave trough off the coast of British Columbia dives southward into the Pacific Northwest for Saturday, or if a high pressure ridge over the eastern Pacific strengthens into the Pacific Northwest and shunts this feature well to our east. At the very least all models show the development of broad northerly flow over the weekend which favors a cooling trend by Sunday and Monday. The scenario in which a trough digs southward just east of the Cascades would allow for a colder airmass to seep into the region through the Columbia Gorge and Cascade Gaps punching temperatures well below normal (overnight lows in the mid 20s to near 30 across the lowlands). On the flip side, scenario would keep the amplifying trough near the Rockies with a more predominate ridge feature overhead, resulting in less of an easterly wind influence. In any case, the NBM probability for subfreezing low temperatures across the lowlands is decent (generally 45-75%) by Monday morning which will give us a fighting shot for the lowest temperatures of the season thus far. For reference our lowest overnight minimum temperatures from Oct through Nov are as follows: Portland 36F, Salem 32F, Hillsboro 32F, and Eugene 30F. All in all, the overall model spread is large during this period with any impacts beyond the decrease in temperatures tough to nail down - forecast confidence is low Friday onward. Definitely keep an eye on the forecast as we go through this week, especially if you have holiday travel plans. -99/03 && .AVIATION...As of 12z Tue, observations indicate fog/low stratus formation across much of the Willamette Valley with either vsbys below 1 SM and/or IFR/LIFR cigs observed, except for at KTTD due to the development of light east winds from the Columbia River Gorge. Fog and LIFR/IFR cigs likely begin gradually lifting towards 13-16z Tuesday as widespread stratiform rain begins pushing into the region from the west ahead of a frontal system. Once rain begins Tuesday morning, expect rain to persist through the day at all terminals. Cigs will trend towards a mix of MVFR/VFR thresholds, except IFR/MVFR at the coast and in southwest Washington, especially after 20-22z Tuesday as the front moves through the region, bringing heavier rain. KPDX AND APPROACHES...Fog and/or low stratus is pushing into the terminal from the north with LIFR to IFR vis and/or cigs. By 14-15z Tuesday, fog will likely lift with cigs gradually trending towards MVFR or even low- end VFR thresholds as persistent rain develops. Once rain begins Tuesday morning, expect rain to persist through the day. Cigs and surface visibilities trend lower again around 00z Wednesday onward with a 60-80% chance for cigs below 2000-3000 ft and a 30-40% chance for cigs below 1000 ft. -02/03 && .MARINE...A frontal system is approaching the waters Tuesday morning and will move over the waters this afternoon through early Wednesday morning. Southerly wind gusts will increase ahead of and along the front with widespread gusts up to 30-34 kt expected. There is a 10-15% chance for occasional gale force wind gusts over 34 kt over the northern and central waters, though not frequent or widespread enough to justify the issuance of a Gale Warning. Therefore, a Small Craft Advisory remains in effect. Seas will rise to 9-11 ft at 12 seconds by Tuesday night, continuing through early Wednesday morning, so the Small Craft Advisory continues into Wednesday morning for the seas. Another frontal system approaches the waters sometime Wednesday night into Thursday, though there are still uncertainties in exact timing. Another round of increased southerly wind gusts up to at least 30 kt is expected. There`s a 45-60% chance for maximum wind gusts to peak at gale force wind gusts over 34 kt for all marine zones, though 3 hourly probabilities drop to 10-20%, indicating widespread gale force gusts are unlikely. Seas are expected to rise again, peak near at least 14-15 ft on Thursday. There is a 15-25% chance seas will peak around 18-20 ft, with a 5-15% chance seas will reach 20-22 ft. This is due to the uncertainty regarding the exact strength and track of the closed surface low and the frontal system accompanying the low. Regardless of the outcome for this system, it appears winds and seas will lower significantly on Friday, especially late in the day. Winds and seas over the upcoming weekend are currently forecast to stay below small craft advisory thresholds with a period of offshore flow. -23/03 && .PQR WATCHES/WARNINGS/ADVISORIES... OR...None. WA...None. PZ...Small Craft Advisory from 10 AM this morning to 1 AM PST Wednesday for PZZ210. Small Craft Advisory from 10 AM this morning to 10 AM PST Wednesday for PZZ251-252-273. Small Craft Advisory from 4 PM this afternoon to 10 AM PST Wednesday for PZZ253. Small Craft Advisory until 10 AM PST Wednesday for PZZ271-272. && $$ www.weather.gov/portland Interact with us via social media: www.facebook.com/NWSPortland x.com/NWSPortland

470 FXUS66 KMFR 251158 AFDMFR Area Forecast Discussion National Weather Service Medford OR 358 AM PST Tue Nov 25 2025 .DISCUSSION...Satellite image shows low clouds in the Rogue, Illinois, portions of the Klamath River Valley, and Umpqua Basin. During the overnight period, low clouds have been the rule which has prevented fog from forming due to less efficient radiational cooling. However, it`s possible for patchy areas of fog to form towards daybreak in the above mentioned areas. A warm front will move north of the area today. The best chance for precipitation will be to the north. However, it will be a close call over the northwest part of the area. Therefore could not rule out intermittent light rain later this morning and afternoon. A nearly stationary front will linger north of our forecast area this afternoon through Wednesday night. At the same time, a weak dirty ridge will move into the area. This weak ridge will be enough to keep the front north of the area. However, as is usual the NBM is too high and too far south with the extent of the precipitation. This despite the fact, the operational models, SPC high res radar reflectivity and all of the individual ensemble members suggest the bulk of the precipitation will remain north, with not much more than intermittent light rain at times over northern Douglas and Coos County. These areas will be on the cusp of the southern end of the precipitation. Even though we have a chance of precip over the northwest part of the forecast area during this time, odds are it will remain dry in these areas as well. It wont` be until Thanksgiving Day when a front followed by an upper trough will move into the area that we actually get a chance of precipitation, mainly along and west of the Cascades After Thursday, the general consensus among the operational models and ensembles show an upper trough dropping in from the north as an upper ridge builds in the Gulf of Alaska. If nothing else, this could usher in a colder air mass Friday into the start of next week. The question will be the trajectory of the upper trough. The operational models are in pretty good agreement into early next week. The ECMWF, GFS ensemble means and clusters show similar solutions with the upper trough dropping south over land with little or no over water trajectory. This solution typically leads to dry and colder weather. However a small percentage of the individual ensemble members show limited precipitation Saturday. This is still a ways out, therefore details could change in the coming days, so stay tuned for the latest updates. -Petrucelli && .AVIATION...25/12z TAFs...Satellite shows low clouds in the Umpqua Basin, Rogue, Illinois and portions of the Klamath River Valley. Low clouds have been observed over the last several hours where the satellite image shows low clouds. This has prevented fog from forming, but it`s still possible for patchy fog towards daybreak. Conditions should improve to VFR between18-19z this morning through this evening. Confidence is low on low clouds and fog formation for the interior westside valleys tonight mainly due to increasing high and mid level clouds from a frontal boundary to the north. If the cloud cover is sufficient, it should be enough to keep low clouds and fog from forming. -Petrucelli && .MARINE...Updated 300 AM PST Tuesday, November 25, 2025...Relatively calmer conditions through Wednesday. While a slight uptick in south winds is expected this afternoon, we are expecting to remain below advisory levels. A low pressure system is expected to enter the region Wednesday night resulting in hazardous conditions due to a combination of a fresh swell and wind-driven seas. At this time, we are expecting solid advisory level steep seas across all waters, but isolated areas of very steep seas are possible across our waters north of Cape Blanco. These conditions are possible Wednesday night through Friday morning. Rain showers are also likely over the waters Thursday. && .MFR WATCHES/WARNINGS/ADVISORIES... OR...None. CA...None. PACIFIC COASTAL WATERS...None. && $$

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

638 FXUS66 KMTR 251455 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 655 AM PST Tue Nov 25 2025 ...New UPDATE... .KEY MESSAGES... Updated at 144 PM PST Mon Nov 24 2025 - Dry and mild conditions continue until the end of the week - Cooler temperatures this weekend as the next system approaches - Gusty offshore winds are possible by the end of the upcoming weekend && .UPDATE... Issued at 654 AM PST Tue Nov 25 2025 Areas of to widespread dense fog continue to impact the region this morning especially in the North Bay valleys, East Bay valleys, southern Salinas Valley and around the Bay Shoreline where we now have a Dense Fog Advisory through 11 AM PST. Fog is also impacting the San Francisco Bay, San Pablo Bay, and the West Delta. Some fog is also being reported in San Jose with visibilities at SJC holding around 1/2 of a mile. Conditions are forecast to gradually improve beyond 11 AM, yet anyone driving should use low beam headlines and slow down to allow extra time to reach your destination when encountering dense fog. We will continue to monitor the foggy conditions closely throughout the morning. RGass && .SHORT TERM... Issued at 252 AM PST Tue Nov 25 2025 (Today and tonight) Primary concern in the short term is the dense fog that has developed overnight across the North Bay Interior Valleys and East Bay Interior Valleys, and may eventually have to be expanded further as we head toward and through sunrise. Attm a Dense Fog Advisory is in effect for the North Bay Interior Valleys and East Bay Interior Valleys until 11AM this morning. An offshore surface high pressure under broader ridging aloft is pulling a weak fetch of offshore flow across much of our area today and tomorrow. Subsidence beneath the ridge should keep a shallow marine layer just offshore this afternoon and evening area wide, resulting in a nice day. Todays temperatures will be similar to yesterday for the North Bay and Bay Area, slightly warmer for inland areas over the Central Coast where morning fog won`t be as extensive. Patchy dense fog is expected to develop once again later tonight into the overnight hours over the North Bay Interior Valleys, however coverage should decrease as drier air associated with the shifting ridge mixes closer to the surface. && .LONG TERM... Issued at 252 AM PST Tue Nov 25 2025 (Wednesday through Monday) Gradual warming through the middle of the week remains on track with temperatures peaking on Thursday afternoon while a progressive trough to our north continues to quickly get deflected north and east of our area. Weak amplified ridging aloft over the Pacific Northwest on Friday won`t stop a weak back door cold front from pushing south through our area during the day Friday, cooling most areas off by a few degrees. The forecast for the weekend and beyond lacks consensus, but cooler temperatures than what we`ll see the next few days seems likely as the longwave synoptic pattern becomes highly amplified, allowing for cooler Canadian air to filter south across the entire West Coast. && .AVIATION... (12Z TAFS) Issued at 337 AM PST Tue Nov 25 2025 LIFR-VLIFR conditions have developed across the North Bay valleys, parts of the East Bay exposed to the influence of the Central Valley fog bank, and the southern reaches of the Salinas Valley. The Central Valley fog has taken advantage of drainage flows and has dropped into parts of the San Francisco Bay, where SFO is currently reporting an IFR ceiling although with good surface visibilities. Some further expansion of the stratus is possible, particularly as clear skies across the rest of the region promote radiational cooling effects. Light offshore flow will continue across the region through the day, promoting a continued feed from the Central Valley fog minus any solar heating and potentially delaying clearance times across the Bay Area. This, in turn, could continue to promote dense fog formation tonight into Wednesday, although the exact details are not certain at this time. Vicinity of SFO... IFR conditions at best through the morning hours, with the southwest flow helping stave off the most severe impacts from the Central Valley fog bank. A more northerly flow developing through the morning could bring poor visibilities to the terminal. Stratus will take quite a while to clear out this morning with light winds expected through the day. There is the potential for stratus and low fog to develop tonight through Wednesday morning, which is not being captured very well by the high resolution models. Have kept the TAF above IFR for now, but pilots should keep track of TAF updates as the day evolves in case the chances for fog increase. SFO Bridge Approach... Similar to SFO. Monterey Bay Terminals... Low to moderate confidence of VFR conditions through the TAF period. Clear skies and dry offshore flows can promote radiational cooling, but the winds also mix the lower layers and prevent stratus from forming through the morning. VFR conditions continues through the late afternoon with winds shifting to a light onshore flow. && .MARINE... (Today through Sunday) Issued at 252 AM PST Tue Nov 25 2025 Dense fog has developed across the West Delta, into the San Pablo and San Francisco Bays, creating hazardous conditions for mariners through the morning hours. High pressure will persist over the coastal waters through mid to late week. Seas will gradually ease through the middle of the week with gentle to moderate northerly breezes. Winds will begin to increase again late week, building moderate to rough seas. && .BEACHES... Issued at 923 PM PST Mon Nov 24 2025 The Beach Hazards Statement has been extended through 10 AM PST Tuesday. A long period northwesterly swell will result in an increased risk for sneaker waves and rip currents. Breaking waves of 13 to 18 feet are expected. Sneaker waves can unexpectedly run significantly farther up the beach than normal, including over rocks and jetties. Rip currents are typically more frequent and stronger in the vicinity of jetties, inlets, and piers. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...Dense Fog Advisory until 11 AM PST this morning for CAZ006-506- 508-510-516. Beach Hazards Statement until 10 AM PST this morning for CAZ006- 505-509-529-530. PZ...Dense Fog Advisory until 11 AM PST this morning for SF Bay N of Bay Bridge. && $$ SHORT TERM...JM LONG TERM....JM AVIATION...DialH MARINE...DialH 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

579 FXUS66 KOTX 251151 AFDOTX Area Forecast Discussion National Weather Service Spokane WA 351 AM PST Tue Nov 25 2025 .KEY MESSAGES... - Mountain snow impacting passes Tuesday into Wednesday. - High degree of uncertainty for valley snow potential Tuesday night into Wednesday and Wednesday night into Thursday. Light to Moderate snow on the mountain passes. && .SYNOPSIS... A warm front will push through the region late Tuesday into Wednesday bring snow impacts to the mountain passes. The midweek systems will bring the potential for light snow in the lowlands and moderate snow over the mountains but carries high uncertainty. && .DISCUSSION... Today through Thursday night: After a quiet start early today, the area becomes more active as a couples frontal waves move through the area. Clouds increase early today from the west as a warm front noses in from the west. That warm front will increase precipitation from the Cascades into central WA through the morning to midday hours, enveloping eastern WA and ID through this afternoon into this evening into the overnight. On Wednesday that potential starts to briefly shift away from central and northeast WA, focused over the southeast WA and ID Panhandle in the morning and waning. Then a more organized trough moves in from the Pacific Wednesday night into Thursday, expanding precipitation throughout the area again with the best chances returning overnight into Thanksgiving day. Chance remain high into Thursday evening, before starting to wane from the west through the late evening into the overnight. The biggest questions surround precipitation-type and amounts. Looking at the HREF precipitation-type probabilities and NBM snow levels and taking into account surface and wet-bulb temperatures and the fact colder air tends to get trapped near the Cascades, on Tuesday the best chance for snow will be near the Cascades east toward the Waterville Plateau stretching to northern mountains to start. Rain potential spreads across the Columbia Basin toward the Spokane/CdA area and Palouse, but as the afternoon transitions to evening the potential for a rain/snow mix or all snow becomes more likely, until later evening into the overnight that the rain/snow mix or all rain becomes more likely. Meanwhile all snow is more likely heading into the Idaho Panhandle Mountains. Then heading through the day Wednesday snow levels rise to around 3-6kft and further rise to around 4 to 6kft Thursday as the deeper system moves in and the warm front lifts northward. What does this translate to for snow amounts? First for today through Wednesday the most significant snow is still forecast around the Cascades, including especially Stevens (and Snoqualmie) Pass. This starts to develop this morning but the better chance for more moderate accumulations develops between 10 AM to 10 PM, before decreasing overnight into Wednesday. Snow rates could approach 1 inch per hour this evening (about 2 pm to 9 pm) per the HREF which show about 40-60% chance of that. inter weather advisories are in place for Chelan County, where 2-4 inches are expected below about 4kft and about 4 to 9 may fall above 4kft, locally higher possible in spots. Other snow will increase across the other mountain passes later this afternoon into tonight, with amounts marginal for highlights around place like Lookout Pass. Around 2-4 inches will be possible there. The other northern mountain zones could see 0.2 to 1 inches in the lower elevations, with 2 to 4 in the higher elevations. Similar could be found in the Blues and higher Camas Prairie. Away from the mountains zones, the best chance for snow will be around the Waterville Plateau, the northern Columbia Basin along the US-2 corridor and into the Spokane/CdA area and Higher Palouse. The Waterville Plateau could see 0.5 to 2 inches, locally higher over western Douglas County. Toward the Spokane/Kootenai County border and Idaho Palouse 0.5 to 1.5 inches are possible. The rest of the Spokane area and higher Washington Palouse could see 0.1 to 0.7 inches, highest near to west of Airway Heights. The lower elevations, such as Downtown Spokane and Spokane Valley may not accumulate anything. Overall there will be a wide-range of snow amounts across the CWA with this system today through Wednesday. Heading into Wednesday night and Thursday snow accumulations will largely be in the mountains. Some light accumulations may linger near Stevens and Snoqualmie Pass and Lookout Pass, but the better potential for moderate snow lifts toward Washington and Sherman where 3 to 7 inches are possible. Meanwhile rain amounts around 0.20 to 0.50 inches are in the forecast in the lower elevations. So it is tending to look like a wet Thanksgiving. Highs will largely be in the upper 30s to low 40s, with lows in the upper 30s and 30s. Friday to Monday: Models continue to show the potential for unsettled conditions this period, with more a northwesterly flow and potential for well below normal temperatures. There is good agreement in the clusters of a very strong ridge forming in the Gulf of Alaska, which would favor much cooler air than what we have recently seen to filter into the region from the north. However models continue to show a fairly large spread in actual temperatures. The best potential for precipitation will be found Friday and Saturday, then starts to decline Sunday into Monday. The best potential in this set-up overall will be around the eastern mountains and far southeast CWA. This would include mountain snow and a rain/snow mix or all rain Friday and mainly snow by Saturday. Some moderate snow is possible around the Idaho Panhandle mountains Friday and Saturday, with maybe 1 to 2 inches every 24 hours. Highs are forecast to be in the 30s and low 40s Friday, mostly 30s Saturday and mostly 30s heading into early next week. /Solveig && .AVIATION... 12Z TAFs: VFR conditions continue tonight with mid to high level cloud cover preventing fog development. An approaching warm front will bring increasing rain and snow chances starting 18-21Z for KEAT and KMWH and reaching KGEG, KSFF, KCOE, KPUW, and KLWS by 22-02Z. As precip moves in, conditions will degrade to MVFR/IFR with ceilings falling and visibilities decreasing. .FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: Moderate confidence on timing of MVFR/IFR conditions with incoming warm front and increasing rain and snow. ----------------------- Confidence descriptors: Low - Less than a 30 percent chance Moderate - 30 to 70 percent chance High - Greater than a 70 percent chance For additional probabilistic information for NWS Spokane airports,please refer to the Aviation Dashboard on our webpage: https:/www.weather.gov/otx/avndashboard && .Preliminary Point Temps/PoPs... Spokane 39 33 41 36 42 32 / 30 90 50 70 90 80 Coeur d`Alene 39 33 41 36 42 34 / 30 90 70 70 90 90 Pullman 39 32 41 36 44 35 / 30 100 80 80 80 90 Lewiston 44 39 46 40 49 40 / 30 90 60 60 60 80 Colville 38 26 40 29 40 27 / 40 80 40 60 90 80 Sandpoint 38 30 39 32 39 31 / 30 90 70 70 90 100 Kellogg 39 34 41 38 43 36 / 30 100 90 80 100 100 Moses Lake 39 33 41 36 43 30 / 60 90 30 70 70 40 Wenatchee 38 33 40 37 41 34 / 80 90 30 80 70 60 Omak 38 31 41 34 41 31 / 50 60 10 50 80 40 && .OTX WATCHES/WARNINGS/ADVISORIES... WA...Winter Weather Advisory from 10 AM this morning to 4 PM PST Wednesday for Central Chelan County-Western Chelan County. ID...None. && $$

726 FXUS66 KPDT 251138 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 338 AM PST Tue Nov 25 2025 .DISCUSSION... A surface trough and warm frontal system moves onshore this morning spreading moisture over a slowly retreating high pressure over the Interior Northwest. High confidence exists in surface temperatures remaining at or below zero through the duration of the afternoon across the Washington Slopes and some of the lower elevations in the Kittitas (60-100% chance even at peak heating). NBM mean brings the valley into the mid 30s briefly this afternoon. Light icing This Evening in the Kittitas valley is possible, generally less than 0.05 based on NBM. FRAM freezing rain accums model looks a bit more uniform in freezing rain amounts of much less than 0.05. These are in the context of probability of freezing rain being about 25% as they are balanced with the snow levels and resultant snow probabilities. Road temperature forecasts also support icing Tuesday evening through the overnight. A start time for advisory messaging still looks reasonable as the HREF LPMM hourly snowfall accums kick in around 9-10 am. The snow rates across the lower slopes look to be around a one half inch per hour accumulation, and by midnight snow could range as much as a foot on the crest to about half that at Cle Elum, Expect some similar snows on the Blues and the Eastern Mountains. Rain shadowing across the central Oregon is expected, however wetting rain are likely (80 percent confidence) in the Columbia Basin and foothills of the Blues while snow falls across the higher elevations of the eastern Mountains. Warm advection seems to win out after midnight and precipitation types flip back to rain. Russell/71 && .AVIATION... 12Z TAFs...VFR conditions will start the period across all sites. Unsettled weather is expected to roll through the area late in the morning through the early afternoon hours, bringing sub- VFR ceilings and visibilities through all TAF sites (with the exception of BDN and RDM that will escape the worst of the conditions, remaining in VFR for the entire period). Winds are not expected to be strong in this system, but it will help enable widespread ceilings less than 3000 feet and lower visibilities through some of the rain showers. YKM is the only site as of now with a chance of rain snow mix at 22Z, but GFSLAMP guidance hinted at some possibility of freezing rain around 06Z to 08Z, but confidence isn`t high enough to warrant it in the TAF, but the chance remains small (5 to 15 percent chance). && .PRELIMINARY POINT TEMPS/POPS... PDT 45 37 47 35 / 50 90 60 60 ALW 44 39 46 38 / 50 90 70 70 PSC 43 34 44 37 / 50 90 40 60 YKM 41 31 44 35 / 70 90 40 70 HRI 43 36 45 37 / 50 90 40 60 ELN 38 29 41 32 / 80 90 40 80 RDM 48 34 53 29 / 20 40 20 10 LGD 45 34 46 34 / 40 90 70 50 GCD 47 36 51 34 / 30 70 30 20 DLS 44 39 48 41 / 70 90 60 70 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...None. WA...Winter Weather Advisory from 10 AM this morning to 4 AM PST Wednesday for WAZ026-522-523. && $$ DISCUSSION...71 AVIATION...95

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

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

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

707 FXUS65 KBOI 251637 AFDBOI Area Forecast Discussion National Weather Service Boise ID 937 AM MST Tue Nov 25 2025 .DISCUSSION...No updates to the forecast this morning. General ridging will introduce a warming trend, but a low well into the Pacific will squeeze some moisture through the area tonight through Thursday. Most of the precipitable water will pass by on Wednesday, with a forecast 0.5-0.6 PWAT which is near the 85th percentile. The plume of moisture will mostly impact the northern 1/3 of our CWA, with precipitation chances 60-90% increasing with height and latitude. The warming trend will gradually lift snow levels from 3000-4000 ft MSL Wednesday morning to 6000-7000 ft MSL Wednesday night. Up to 2 inches of snow are possible in mountain towns that morning before the warmup, which will switch the precipitation to rain and help melt snow accumulation in mountain valleys. Ridges could see 3-5 inches of snow, more north of our area. Temperatures by Thursday warm to about 10 degrees above normal. && .AVIATION...VFR. MVFR/IFR conditions possible in the west-central Idaho mountains from lowering ceilings and snow showers this afternoon into evening. Mountains becoming obscured gradually west- to-east this afternoon into evening. Snows levels 3000-4000 ft MSL. Surface winds: variable under 10 kt. Winds aloft at 10kft MSL: W-NW 20-30kt, becoming W-NW 30-40kt by 06z/Wednesday. KBOI...VFR and mostly clear with few high clouds. Surface winds: SE 5-10kt. && .PREV DISCUSSION... SHORT TERM...Today through Thursday night...Monday`s cold front has left our CWA 8 to 15 degrees colder than early yesterday morning, but the core of cold air will shift east of our CWA this afternoon. High temps today will be several degrees colder than yesterday in our eastern-most areas, but near yesterday`s highs in Oregon. A Pacific warm front will spread light snow across the northern third of our CWA late today through Wednesday. The southern 2/3 of our CWA will become cloudy but should stay dry. Pcpn in the north will decrease gradually from south to north later Wednesday through Thursday, but snow will also mix with or change to rain up to 5500 feet MSL. Pcpn will increase again Thursday night as the system`s cold front moves through, with snow level lowering again to about 4800 feet, changing rain back to snow. Initial snow levels (tonight through Wednesday) have also been lowered 300-600 feet from previous forecast, as NBM has become a high- outlier. This means slightly greater expected snow accumulation through Wednesday, with McCall now forecast to receive about 2.0 inches vs 1.5 inches previously. Winds will be generally light southeast through Thursday, then becoming light northwest behind Thursday night`s cold front. LONG TERM...Friday through Tuesday...A shortwave trough digging over the Northwest region will steer a cold front across the area Friday. This cold front will bring a gradual cooling trend Friday through the weekend, gradually dropping lower elevation temperatures from the upper 40s/lower 50s Friday into the upper 30s/lower 40s Saturday and Sunday, with higher elevations seeing a drop from the upper 30s into the upper 20s. Snow levels are expected to gradually drop from the 3000-4000 ft range Friday and into the 2000-3000 ft range Saturday through Sunday. Friday will see a 30-40% chance of mixed precipitation over higher elevations. Saturday will see a 20-30% chance of rain over lower elevations and a 30-40% chance of snow over mountains. Sunday will see a weaker shortwave trough dig across the region, but with uncertainty over its digging pattern and moisture content. For now, a 20-30% chance of snow over the mountains is forecast for the early hours of Sunday. Monday through early Tuesday will see broad ridging that will bring drier conditions and a weak warming trend into the lower 40s. Long-term guidances suggest another trough from W`rn British Columbia digging into the area late Tuesday, tentatively returning a cooling trend and widespread precipitation over the area. && .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 DISCUSSION...JM AVIATION.....CH SHORT TERM...LC LONG TERM....JY

227 FXUS65 KLKN 250951 CCA AFDLKN Area Forecast Discussion National Weather Service Elko NV 146 AM PST Tue Nov 25 2025 .KEY MESSAGES... Updated at 135 AM PST Tue Nov 25 2025 * Warming trend Wednesday and Thanksgiving Day * Light precipitation possible Friday and Saturday * Colder this weekend && .UPDATE... Issued at 135 AM PST Tue Nov 25 2025 Current forecast is tracking well; no changes have been made to the current seven day forecast. && .DISCUSSION... (This afternoon through Sunday night) WEATHER PATTERN OVERVIEW: A ridge of high pressure will build northward across the Silver State today. An Eastern Pacific, upper-level area of high pressure will make landfall in Southern California tonight. This anticyclone aloft will move eastward into the Desert Southwest Wednesday. The upper-level area of high pressure will open up into a ridge of high pressure Wednesday night into Thursday. High temperatures throughout Northern and Central Nevada Tuesday afternoon will be two to four degrees below normal for this time of year. A warming trend is expected Wednesday and Thanksgiving Day. By Thursday afternoon, maximum temperatures across Northern and Central Nevada will be twelve to fourteen degrees above seasonal values. A cold front will move southeastward into Utah Friday. The southern extent of this cold front may clip Northeastern Nevada Friday, resulting in a slight chance of light precipitation. This small precipitation possibility should be confined to Northern Elko County. Another cold front will move southward across Eastern Nevada Saturday and Saturday night, resulting in a chance of light precipitation in Northern and Central Nevada. Much colder weather is anticipated this weekend. High temperatures throughout Northern and Central Nevada Saturday afternoon will be seven to nine degrees colder than Friday afternoon. Maximum temperatures across Northern and Central Nevada Sunday afternoon will be six to eight degrees below normal for this time of year. Minimum apparent temperatures Sunday night will be in the single digits in the coldest valleys of Northern and Central Nevada. FORECAST CONFIDENCE & DEVIATIONS: High forecast confidence regarding cooler weather Tuesday. High forecast confidence in a warming trend Wednesday and Thanksgiving Day. Moderate forecast confidence regarding the possibility of light precipitation Friday and Saturday. Moderate forecast confidence in colder weather this weekend. No deviations from the NBM model output. && .AVIATION... VFR conditions are expected at all terminals over the next 24 hours, with winds below 10 knots. A weak system clips Northern NV this afternoon and early evening, with CIGs lowering to around 10K feet at KEKO. && .LKN Watches/Warnings/Advisories...None. && $$ DISCUSSION...96 AVIATION...96