534 FXUS66 KSEW 100345 AFDSEW Area Forecast Discussion National Weather Service Seattle WA 745 PM PST Fri Jan 9 2026 .UPDATE...Swathes of high clouds with some clear areas has allowed fog to already develop in prone areas. Otherwise, dry conditions persist as upper level ridging continues to build over western Washington. Inherited forecast is on track with no evening update needed. && .SYNOPSIS...A weak upper ridge will provide a brief period of drier weather before the next system arrives late Saturday. Moderate to heavy rain is expected at times Saturday night into Monday night along with snow levels rising above pass level. Area rivers are expected to rise with flooding expected on the Skokomish. Drier conditions are favored to return by the middle of next week as high pressure aloft rebuilds into the region. && .SHORT TERM /TONIGHT THROUGH SUNDAY NIGHT/...High pressure over the Pac NW is giving western WA a brief dry break in the weather. The ridge will weaken/flatten over the area on Saturday with a return to moist westerly flow. The bulk of the precipitation on Saturday will affect the coast and mountains. Snow levels begin around 4,000 ft with a few inches of snow over the higher peaks and passes. We remain under a wet pattern moving into Sunday with ongoing moist, diffluent, W/SW flow over the area. We`re under a warmer air mass and will see snow levels rising to around 6,000 ft - with mostly rain in the mountains. The highest amounts are aimed at the Olympics and central/northern Cascades with several inches of rain expected. Rivers will see rises and the latest guidances does show a few rivers reaching Action Stage, with flooding expected on the Skokomish River in Mason County. However, there`s still potential for Minor flooding on a few rivers if precipitation leans closer to the 90th percentile. In addition to the wetter weather, it will also be windy on Saturday and Sunday, particularly along the coast and Everett northward (with south gusts to 30-40 mph). 33 && .LONG TERM /MONDAY THROUGH FRIDAY/...Wet weather continues on Monday for more rain across western WA. The air mass continues to moderate as we see snow levels rising to around 8,000 ft. Lowland temperatures will be mild and in the 50s. Additional rounds of heavy rain will continue to impact the coast and mountains, leading to sharp rises on the rivers. We continue to monitor the QPF and trends with a few rivers reaching Action Stage (with potential for Minor flooding). Rain tapers down Monday night as high pressure builds from the south, thus shifting the precip band to our north and into B.C. There`s still some lingering light precip on Tuesday morning but for the most part we will begin to dry out - allowing the rivers to crest and recede. High pressure remains anchored over the region through the weekend with dry weather expected. With the ridge and light winds, we will start to see cooler overnight lows in the 30s by Friday morning. 33 && .AVIATION...Majority of terminals VFR with high clouds, although locations that have seen some clearing and are prone to fog development have already started to see MVFR to IFR conditions emerge. Once established, fog will likely remain into Saturday morning before dissipating by late morning. A weather system will move through area terminals bringing widespread rain on Saturday, arriving along the coast late morning and reaching interior terminals by the afternoon. Limited visibility down to 1-3SM expected in rain. Ceilings will gradually deteriorate in the late evening hours towards MVFR. Breezy conditions are also expected along the coast and north of PAE, with gusts to 30 kt possible starting Saturday morning. KSEA...VFR at the terminal persisting for the majority of the TAF period. Fog will form near the vicinity overnight, but is not expected to move into the terminal at this time. MVFR ceilings return after 03Z Sunday. SE winds 4-6 kt this afternoon, increasing to 8-10 kt Saturday afternoon. 29/18 && .MARINE...High pressure currently over the waters will shift inland Saturday morning as a frontal system moves into the region. Additional systems will move across the waters Sunday and Monday, keeping marine conditions active. A Small Craft Advisory remains in effect for the coastal waters and West Strait for the combination of elevated seas and winds. Southerly winds will increase Saturday morning across the coastal waters to 20-25 kt, frequently gusting to 30 kt. Occasional gusts to 35 kt are also possible. In addition, seas will build to 12-17 ft for the coastal waters and 10-13 ft for the West Strait. With the latest high-res guidance showing gusty southerly winds along the Northern Interior Waters, Admiralty Inlet, and East Strait, these locations have been added to a Small Craft Advisory. Seas will gradually subside on Tuesday as high pressure rebuilds over area waters into midweek. 29 && .HYDROLOGY...No river flooding is expected through Saturday. Ensemble precipitation guidance continues to trend up leading to an increased concern for potential river flooding. The main risk of river flooding is along the Skokomish River in Mason County, where the forecast crest is into moderate flood stage Monday. Elsewhere, rivers will rise but confidence in rivers reaching flood levels is less than 30%. The relative risk appears to be highest for rivers originating from the central and northern Cascades, where snow levels will rise from around 4000 feet to 7500-8000 feet during the event, bringing rain on snow into the picture. This event is likely to be followed by a relatively dry period, allowing for rivers to recede mid to late next week. && .SEW WATCHES/WARNINGS/ADVISORIES... WA...None. PZ...Small Craft Advisory until 4 PM PST Sunday for Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-Coastal Waters From Cape Flattery To James Island Out 10 Nm- Coastal Waters From James Island To Point Grenville 10 To 60 Nm-Coastal Waters From James Island To Point Grenville Out 10 Nm-Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm-Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm-Grays Harbor Bar- West Entrance U.S. Waters Strait Of Juan De Fuca. Small Craft Advisory from 2 AM Saturday to 4 PM PST Sunday for Admiralty Inlet-East Entrance U.S. Waters Strait Of Juan De Fuca-Northern Inland Waters Including The San Juan Islands. && $$

992 FXUS66 KPQR 092259 AFDPQR Area Forecast Discussion National Weather Service Portland OR 259 PM PST Fri Jan 9 2026 .SYNOPSIS...A weak front will bring chances for rain across southwest Washington and along the north Oregon coast over the weekend into early next week, while the Willamette Valley and Portland metro stays dry. Drier and warmer over the entire area early next week as high pressure moves slightly offshore and amplifies, with high temps nearing 60 degrees on Tuesday. && .SHORT TERM...Now through Sunday...High pressure continues to build over the region, supporting more mild temperatures and dry conditions through Saturday afternoon. Highs this afternoon are expected to top out in the upper 40s to low 50s for most locations as cloud cover continues to dissipate, leaving mainly high clouds above 15 kft. High pressure will remain in place tonight, supporting light winds and cool temperatures. Ensembles continue to struggle with whether fog develops in the lowlands and sheltered valleys overnight as mid and upper level clouds are expected to increase from the west ahead of a cold front. Timing and coverage of the cloud cover moving in is causing a split in possible outcomes. REFS probabilities for visibility to below 1 SM are 20-50% through the Willamette Valley and along highway 26 west of Portland toward the coast range from 10 PM tonight to 10 AM Saturday. Most likely scenario is patchy fog develops where breaks in the cloud cover develop. Any fog that develops should remain localized overnight. An upper level trough starting out south of the Aleutian Islands on Friday will track eastward into the Gulf of Alaska and toward the British Columbia coast. This will cause the upper level ridge to flatten and the axis to shift slightly inland toward the Great Basin. A cold front is expected to approach the southwest WA and northwest OR coasts but weakens substantially by the time it reaches the coast. The bulk of the rain is expected north of the Portland CWA in the Olympic Peninsula of WA. However, some areas in the CWA will see rain, mainly Pacific and Wahkiakum counties in WA and Clatsop and Tillamook counties in OR. Totals Saturday night through Sunday could reach 0.5-1.0 inches. Along the central OR coast and southwest WA from Cowlitz to Skamania , totals could reach 0.1-0.25. The Portland/Vancouver metro, Willamette Valley, and OR Cascades should see at most a few hundredths if anything. With a prolonged period of calm conditions and low vertical mixing heights in place this weekend, expect stagnant air with limited air movement. This will bring the potential for gradually worsening air quality over the interior lowlands, especially in areas where many people are burning wood stoves to stay warm. Therefore, an Air Stagnation Advisory is in effect for the entire Willamette Valley and greater Portland/Vancouver metro through 10am Sunday. -19 .LONG TERM...Sunday Night through Friday...A noticeable warming trend develops Sunday through Tuesday as a quasi-stationary upper level ridge becomes anchored in place over California and the Pacific Northwest. By Tuesday, models and their ensembles show the ridge evolving into a large closed high pressure system at 500 mb with heights peaking near 590 dm over northern California and southern Oregon, which is around the 99th percentile compared to climatology. This will bring dry and calm weather with warmer than normal temperatures for this time of year, both overnight and during the day. The NBM suggests high temperatures in the low to mid 50s across the lowlands on Sunday and mid to upper 50s on Monday, warmest along the central Oregon coast and in the Lane County lowlands. By Tuesday, forecast highs reach the upper 50s to lower 60s for nearly all lowland locations across northwest Oregon and southwest Washington. Normal high temperatures for mid January are in the mid to upper 40s within the Willamette Valley and Portland metro, which means forecast temperatures are 10 to 15 degrees above normal. Overnight lows will likely be in the 40s each night, except upper 30s in the southern Willamette Valley. The pattern likely persists the the middle and into late next week. However, there are signs that the pattern may waver slightly in the middle of next week when another large upper level trough digs across the eastern Pacific. Current solutions keep the area dry but there is potential that a weakening cold front could bring light precipitation to the southwest Washington counties late Wednesday. Regardless of whether this slight breakdown occurs, high pressure will either remain in control or quickly retake hold of the PacNW. -19/23 && .AVIATION...High clouds continue to stream overhead this afternoon as VFR conditions persist across the region. Expect similar conditions into the evening hours. We`ll still need to watch the threat for patchy fog tonight into Saturday morning across portions of the Willamette and Tualatin Valley as calm winds and wet soils will be in place to provide 2 out of the 3 antecedent conditions needed. The big question remains whether the prevalence of high cloud cover through Saturday morning will be enough to inhibit radiational cooling (and thus fog formation), or at the very least limit the window for fog development. KHIO, KUAO, KSLE, and KEUG still all have a 20-40% chance for visibilities to drop below 1/2 SM or less at any time between 08-18z Saturday. At this point confidence is low regarding fog placement and timing. For now, have continued to hint at fog and low stratus development in the TAFs for those four sites. Fog is unlikely to occur at KPDX, KTTD, KAST, and KONP due to light offshore winds around 5-10 kt. KPDX AND APPROACHES...Overall there is high confidence VFR conditions persist through the TAF period with CIGs AOA 10-15kft. Current guidance places the chance for degraded flight conditions due to fog at only 10-15% between 14-18z. Winds generally remain below 10 knots with an easterly component. -99 && .MARINE...Seas have been on the decrease today with current buoy observations showing wave heights around 9-11 feet at 14-15 seconds. We`ll likely remain in a holding pattern with similar conditions into early Saturday morning. An area of high pressure just to our east coupled with an approaching frontal system offshore will produce a slight offshore component to the wind to start Saturday but winds become due south and strengthen a bit as days goes on. Expect widespread gusts up to 25-30 kt Saturday afternoon through the weekend. There is around a 20-40% chance of marginal gale force wind gusts up to 35 kt across the outer coastal waters beyond 20 NM, but that will depend on how far east the quasi-stationary front gets. Confidence in frequent gale force wind gusts materializing are still not currently high enough to justify the issuance of a Gale Watch - a Small Craft Advisory remains in effect. Seas will build again on Saturday too as the southerly wind waves combine with a more southwest to westerly swell. Seas around 12 to 15 ft are likely by Saturday evening. However, seas likely build further into the mid to upper teens late Sunday into Monday with the arrival of a long period westerly swell. At least the chances for seas to exceed 20 ft on Sunday are very low at only 1-5%. High pressure strengthens Monday night into Tuesday, bringing much quieter marine conditions with light winds and seas under 10 ft for the middle of the week. -99/23 && .BEACH HAZARDS...A high threat of sneaker waves remains for the coast through early next week due to a continued long-period southwesterly to westerly swell. Sneaker waves can create potentially life-threatening conditions in the surf zone as waves may run farther up the beach than expected. These waves can easily catch people off guard and cause beachgoers to be knocked off their feet and pulled out into cold ocean waters. Never turn your back to the ocean. Caution should be used when in or near the water, and those with children should be especially watchful. Sneaker waves can lift or roll large, heavy logs or rocks which can lead to serious death or injury. Keep off rocks, logs, and jetties near the waterline on beaches. -23 && .PQR WATCHES/WARNINGS/ADVISORIES... OR...Air Stagnation Advisory until 10 AM PST Sunday for ORZ109>111- 114>118. WA...Air Stagnation Advisory until 10 AM PST Sunday for WAZ205-206. PZ...Small Craft Advisory until 4 PM PST this afternoon for PZZ210- 251>253-273. Small Craft Advisory from 4 AM Saturday to 10 AM PST Sunday for PZZ210-251>253-273. Small Craft Advisory until 10 AM PST Sunday for PZZ271-272. && $$ www.weather.gov/portland Interact with us via social media: www.facebook.com/NWSPortland x.com/NWSPortland

144 FXUS66 KMFR 100016 AFDMFR Area Forecast Discussion National Weather Service Medford OR 416 PM PST Fri Jan 9 2026 .DISCUSSION...Updated Aviation section... && .AVIATION...10/00Z TAFs...VFR conditions are present to begin the evening, but conditions will fall to IFR/LIFR between 09Z-11Z tonight. Conditions are again expected to improve by 19-20z, with the Rogue and Illinois Valleys likely taking the longest to improve. With high pressure in control for the next 7 to 10 days, expect a similar pattern to continue with the nightly return of fog/freezing fog and low clouds to West Side Valleys, with clearing expected late morning and afternoon. Outside of the valleys, VFR conditions will prevail with generally light winds. Expect some gusty winds along the Cascades and Siskiyous at the end of the TAF period. /BR-y/Hermansen && .PREV DISCUSSION... /Issued 253 PM PST Fri Jan 9 2026/ DISCUSSION... Just some high cloud moving through the forecast area as a ridge continues to build over northern California and southern Oregon this afternoon. Temperatures are just starting to push into the 40`s and most areas should top out in the mid 40`s this afternoon. We went with a persistence forecast for tonight with more fog and freezing fog in the valleys. Dewpoints did come up a bit as we mix the boundary layer and we expect overnight low temperatures to be similar to last night. So without much change in conditions, we decided to issue a freezing fog advisory for they valleys in Jackson and Josephine. As for Klamath County, the air is likely too dry there. Klamath Falls is currently sitting at a 24 dewpoint and the MAV and MET MOS guidance are not expecting any fog tonight. However, the ridge does build a bit tonight and there was some fog or low stratus to the north Friday morning. Therefore, it could happen and impact Klamath Falls later tonight, we just didn`t issue the advisory there. Same goes with northern California as there was fog or low clouds near Fort Jones, but that is a fairly isolated area in Siskiyou County. The air will remain stagnant heading into Saturday with a ridge overhead. The 00Z sounding today should give some hints at how much we`re mixing, but HRRR forecast BUFKIT soundings suggest only a few hundred feet on Saturday. The forecast changes slightly by Sunday with a weak atmospheric river and stationary front impacting locations well to our north. There is a 10 to 15% chance of rain just south of Florence on Sunday afternoon into Sunday night, but that is it for precipitation chances through the forecast as a upper ridge strengthens. Ensemble data is showing abnormally warm temperatures for much of next week, especially towards the tail end of the week. EFI(extreme forecast index) values for high temperatures from the ECMWF ensemble are around 0.8 to 0.9 over sections of the forecast area. That denotes high confidence of warmer that normal temperatures heading into next week with the potential to break some records. Right now, we`re forecasting some records to fall on Wednesday the 14th and Thursday the 15th. Looking at some of the individual deterministic models, they denote a pretty strong thermal trough building up the Oregon coastline with a modest east to west pressure gradient and easterly flow. Both the ECMWF and GFS were showing temperatures pushing into the upper 60`s and perhaps the lower 70`s along sections of the coast and coastal valleys, which is notable for mid January. As for westside valleys and Medford, the question is always fog and how it could inhibit our daily high temperature. Right now our forecast lies below the 50th percentile on the NBM. If we miss out of the fog, we`ll likely see lower 60`s compared to the mid 50`s in the forecast. Overall, minor impact weather, yet a lot of interesting things going on next week. Not great news for our limited snow pack on the other hand. -Smith MARINE...Updated 115 PM PST Friday, January 9, 2026...Generally improving conditions are expected today under light southerly winds and gradually lowering seas. Steep seas will persist through this afternoon, then a brief period of improved conditions is expected this evening through early Saturday morning. South winds will increase tonight into Saturday as a front approaches the West Coast. This front stalls and never really pushes into the area waters, but seas will build again Saturday into Sunday as a west-southwest swell moves into the waters. While winds are likely to remain below advisory criteria, steep seas will develop for most areas from Gold Beach northward and persist through Sunday. Steep seas are expected to persist into Monday as another, longer period swell (peaking around 12 to 14 ft at 15 to 17 seconds) moves into the waters late Sunday into Monday. Seas remain elevated through early next, but gradually lower to below 10 ft on Tuesday. Gusty north winds will develop for the latter half of the week, with another long period swell possibly building into the waters. This will bring another round of steep, possibly very steep and hazardous seas. /BR-y && .MFR WATCHES/WARNINGS/ADVISORIES... OR...Beach Hazards Statement from Sunday morning through Monday afternoon for ORZ021-022. Air Stagnation Advisory until 10 AM PST Sunday for ORZ023-024- 026-029>031. Freezing Fog Advisory from 10 PM this evening to 8 AM PST Saturday for ORZ024-026. CA...None. PACIFIC COASTAL WATERS...Small Craft Advisory from 10 AM Saturday to 4 PM PST Sunday for PZZ350-356-370-376. && $$

093 FXUS66 KEKA 092143 AFDEKA AREA FORECAST DISCUSSION National Weather Service Eureka CA 143 PM PST Fri Jan 9 2026 .SYNOPSIS...Cool conditions will steadily warm through mid next week. Conditions will remain unseasonably dry, clear, and calm through next week. && .DISCUSSION...Moderate offshore flow and cold air allowed for very cool temperatures across the area this past morning with many interior valleys and areas along the coast experiencing apparent temperatures below 30. Skies have remained clear today but gentle winds turning more southerly will help increase coastal moisture and generally increase overnight temperatures slightly. That said, many locations will still see overnight conditions near freezing. Weak upper level ridging will slowly build into the region this weekend and into early next week. Gradual warming will occur by this weekend and build into mid next week. A very weak upper level wave around Sunday could produce midlevel clouds and very light coastal drizzle, but otherwise skies will be mostly clear. Southeast winds will most likely inhibit any strong marine layer formation. Above average temperatures are forecast by Tuesday with some daytime interior highs in the low 70s by early next week. Though not high in absolute terms, this may approach some high temperature records such as around Ukiah by mid week. In contrast to the last couple of weeks, there is very little chance of rain with less than 10% of ensemble members indicating any chance for wetting rain even along the coast by next weekend. /JHW && .AVIATION...(18Z TAFs)...VFR conditions and light winds are forecast across the area today. Some interior valleys may see interior fog or stratus tonight, but impacts to the TAF sites are unlikely. There is a slight (less than 30% chance) for IFR conditions at CEC and UKI briefly early Saturday morning. JB && .MARINE...Seas are starting to subside as winds ease and the westerly swell subsides. Combined seas are likely to be below 10 ft by this afternoon and evening. Winds turn southerly today and could be breezy around Cape Mendocino and the northern outer waters, but gusts are still likely to remain below 20 kts in these areas. A mid- period westerly swell will fill in Saturday, though combined seas are likely to remain below 10 ft. Another, larger long-period westerly swell at around 12 ft at 17 seconds fills in Sunday, returning elevated seas. Winds turn northerly early next week and are likely to be breezy south of Cape Mendocino. JB && .BEACH HAZARDS...On Sunday, another long period westerly swell originating from a low near the Aleutians fills in at around 7 ft at 20 seconds and peaks around 12 ft at 17 seconds. A Beach Hazard Statement has been issued for this moderate sneaker wave threat late Sunday morning through Monday afternoon. Stay much farther back from the ocean and avoid steep beaches and jetties. Remember, never turn your back on the ocean! JB && .EKA WATCHES/WARNINGS/ADVISORIES... CA... Beach Hazards Statement from Sunday morning through Monday afternoon for CAZ101-103-104-109. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory until 3 PM PST this afternoon for PZZ450-470. Small Craft Advisory until 8 PM PST this evening for PZZ455- 475. && $$ 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

380 FXUS66 KMTR 100010 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 410 PM PST Fri Jan 9 2026 ...New AVIATION, MARINE... .KEY MESSAGES... Updated at 154 PM PST Fri Jan 9 2026 - High and dry pattern with offshore flow - Cold overnight/early morning conditions continue into the weekend - Hazardous beach conditions at all Pacific Coast beaches through tonight and again Sunday through Thursday && .SHORT TERM... Issued at 154 PM PST Fri Jan 9 2026 (This evening through Saturday) Another chilly night and morning are on tap again tonight with a Cold Weather Advisory and an Extreme Cold Warning set to go into effect 1AM to 9AM PST Saturday. As noted by the night shift, extra consideration of tomorrow`s low temperatures was needed given that straight NBM showed tomorrow`s low temperatures warming in comparison to today`s low temperatures. When comparing the deterministic NBM forecast to the NBM percentile forecast, it was noted that the deterministic NBM had a warm bias compared and was warmer than both the 50th and 75th percentiles. For that reason, utilized a blend of this morning`s low temperature observations and the NBM 50th percentile to lower the forecasted temperatures for tomorrow morning. This results in more widespread Cold Weather Advisory conditions and Extreme Cold Warning conditions in the interior Central Coast. Moderate to high confidence that temperatures will drop below 36 degrees across the interior Bay Area and portions of the Central Coast with probabilistic guidance showing a 80-90% chance of this occurring. Comparatively, looking at the probability of temperatures less than 32 degrees primarily highlights the interior Central Coast. There are a few localized areas meeting Extreme Cold Warning criteria (temperatures less than or equal to 32 degrees) in the North Bay Valleys and eastern Santa Clara Hills but these will be isolated with the majority of the zone expected to meet Cold Weather Advisory Criteria instead. Both of the cold weather products will expire at 9AM PST on Saturday with temperatures warming into the upper 50s to low 60s Saturday afternoon. Light, offshore winds are expected again tonight into tomorrow with locally gustier conditions expected across the highest elevations (generally above 2500 ft). Offshore winds look to continue for the next several days as ridging builds over the West Coast, a strong surface high (1045 hPa) sits over the Intermountain West, and comparatively lower pressure (1030 hPa) sits over California. As winds flows from areas of higher to lower pressure, the pressure gradient will continue to support offshore flow until we see that area of high pressure in the Intermountain West weaken. Current guidance suggests that the area of high pressure over the Intermountain West will start to weaken early next week but offshore flow persists for much of the short and long term forecast periods. && .LONG TERM... Issued at 154 PM PST Fri Jan 9 2026 (Saturday night through next Thursday) No major weather concerns for the upcoming week with surface high pressure and upper level ridging continuing. Afternoon temperatures gradually increase starting Sunday with high temperatures building into the mid to upper 60s, even a few pockets of low 70s across the interior Central Coast, by early next week. Mornings remain chilly through at least Tuesday with low temperatures in the 30s to low 40s across the region. Cold weather products will likely be needed Saturday night into Sunday morning again but confidence decreases that they will be necessary across most of the CWA starting Sunday night. By mid to late next week, morning low temperatures will be back in the 40s with only pockets of the upper 30s across the interior Central Coast. Overall, the forecast looks dry and warm for much of this upcoming week. If you plan on visiting the beach, ocean conditions are expected to remain unsettled with additional Beach Hazards Statements likely to be issued. Exercise caution along the coastline and never turn your back on the ocean. && .AVIATION... (00Z TAFS) Issued at 410 PM PST Fri Jan 9 2026 VFR through the TAF period for all sites but STS which will see spotty fog into Saturday morning. High clouds build through the night. Winds range from southerly to easterly through the TAF period for most sites, the more notable exception will be SJC which will see moderate northwest winds into the early night and again Saturday afternoon. Wind speeds stay light to moderate through the weekend. Vicinity of SFO...VFR through the TAF period. Light to moderate easterly winds last into the late night before reducing and becoming more variable. These light and variable winds last through the midday on Saturday before northeast winds build. SFO Bridge Approach...Similar to SFO. Monterey Bay Terminals...VFR through the TAF period. Light and variable winds last through the evening. Winds turn southeasterly overnight with moderate drainage winds expected to affect SNS into Saturday afternoon. && .MARINE... (Tonight through next Thursday) Issued at 410 PM PST Fri Jan 9 2026 A gentle to moderate breeze will persist over the coastal waters through Sunday. A moderate period and larger northwesterly swell will continue produce a rough sea state with shoaling near the coast, harbor entrances, and bars through late this evening. Seas will subside late tonight and into the weekend before building again early next week. Dry weather will continue with a high pressure system over the region. && .BEACHES... Issued at 321 AM PST Fri Jan 9 2026 Overall beach/surf zone still remain hazardous due to moderate period and higher swell. The largest surf/breaking waves will be this morning before easing through the day. High Surf Advisory still remains in effect through 10 pm Friday PST. Expect large breaking waves up to 22 feet, strong rip currents and sneaker waves from coastal Sonoma county to coastal Monterey county, excluding the northern Monterey Bay shoreline where a Beach Hazards Statement will be in effect. Large breaking waves can overpower swimmers resulting in significant physical injury and increase the risk of drowning. Beach Hazards Statement remains in effect through Friday evening for the northern Monterey Bay shoreline. Expect hazardous beach conditions with strong rip currents, sneaker waves, and breaking waves up to 15 feet. This will result in dangerous conditions along the shoreline. Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...High Surf Advisory until 10 PM PST this evening for CAZ006-505- 509-530. Cold Weather Advisory from 1 AM to 9 AM PST Saturday for CAZ502- 506-510-512>515-517-528>530. Extreme Cold Warning from 1 AM to 9 AM PST Saturday for CAZ516- 518. Beach Hazards Statement until 10 PM PST this evening for CAZ529. PZ...Small Craft Advisory until 9 PM PST this evening for Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 10-60 NM. && $$ SHORT TERM...Kennedy LONG TERM....Kennedy AVIATION...Murdock MARINE...RGass 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

581 FXUS66 KOTX 092305 AFDOTX Area Forecast Discussion National Weather Service Spokane WA 305 PM PST Fri Jan 9 2026 .KEY MESSAGES... - Drier Saturday and most of Sunday. - Light rain and high mountain snow return early next week. && .SYNOPSIS... The weather turns drier for much of the region for a good chunk of weekend. Chances for rain and high mountain snow start into the Cascades Sunday and the northern counties Sunday night, before expanding out for Monday. Thereafter dry and relatively mild weather is forecast. && .DISCUSSION... Tonight through Saturday: High pressure builds in ahead of the next system. Look for dry, partly to mostly cloudy skies. Morning stratus and patchy fog is forecast to impact parts of the Columbia Basin and northern-tier of WA and ID. As the easterly flow increases ahead of that next system that low level moisture is projected to shift toward the Cascades and western basin and that is where the deeper cloud cover is forecast to be heading into Saturday afternoon. With that said, clouds from the next system will begin to move in from the west and some light snow chances enter the Cascade crest later Saturday. Highs will be in the 30s to mid-40s. Saturday night through Monday; a more progressive and wetter westerly flow moves on the region, with a push of milder air, as a several shortwaves cross into the region. As a whole this will lead to increasing precipitation chances first through the Cascades Saturday night, across the Cascades and northern third of WA and ID Sunday, and over a broader portion of the CWA on Monday. The exception is near central WA as the westerly flow will tend to shadow areas near to east of Waterville Plateau, limiting the PoPs. As a whole, snow levels rise to around 3-6kft on by later Sunday into Monday, meaning more rain than snow and limited snow impacts at the mountain passes. The exception will be near the Cascade valleys, particularly the Methow Valley. Colder air tends to get trapped at the lowlands, while warmer air comes in aloft. That means we will have to watch for the potential for freezing rain there. The NBM is not depicting much in the way of freezing rain, but other guidance is showing that potential Sunday into Monday AM. The LREF shows about the probability of 6-hour freezing rain amounts of 0.01 inches to be around 20-40%, but the probabilities drop to around 10-20% for 0.05 inches. So anything that falls may be light. Overall this will be monitored. The remainder of the area the precipitation amounts outside the mountains will be lighter. In particular, the Cascade crest has the potential to see 1 to 2 inches of liquid precipitation between Saturday night and Monday night. The NWRFC models do show some rises on rivers near the Cascades, but none of them approach flood or even action stage, but we will have to keep an eye on things given the amount of snow that fell in the area this past week. Otherwise look for mostly cloudy skies. Breezy conditions are in the forecast for Monday, but with gusts near 15-20 mph. Highs will largely be in the 30s to mid-40s Sunday, then mostly 40s Monday with some low 50s in the deeper basin and L-C Valley. The exception, in the Methow Valley some areas may not get out of the upper 20s to low 30s Sunday. Tuesday to Friday: Ensembles show a ridge amplifying into next week. Storm systems will generally track north of the area, resulting in a mostly dry, stagnant pattern. Some precipitation chances linger Tuesday near the Cascades crest and north and central Idaho zones, mostly as rain and high mountain snow and early in the day. Models also hint at some impulses brushing the area around later Wednesday/Thursday, but the risk is low. Overall the ridge pattern will tend to favor fog and/or low stratus developing. However passing impulses may increase winds and combined with clouds, this may inhibit air stagnation, save for perhaps near the Cascades. Temperatures will remain mild and above normal, especially Tuesday and Wednesday with highs in the 40s to low 50s, before dropping a bit toward the end of the week back to the upper 30s to mid-40s. That is still above normal. The wildcard is the low cloud cover: if that is more persistent then this could limit temperatures from reaching their full potential. /Solveig && .AVIATION... 00Z TAFs: VFR/MVFR conditions near GEG/SFF/COE will continue this afternoon to early evening. Then heading into later tonight into early Saturday MVFR conditions are forecast around GEG/SFF, with possible localized fog. The eastern flow developing will favor the higher risk near GEG for late tonight/early Saturday, while COE is expected to trend to VFR heading into that time frame. The easterly flow will push some moisture back toward MWH/EAT, which will start out at VFR now, trending to MVFR/IFR later tonight into early Saturday. PUW/LWS are expected to remain VFR, with some breezy conditions developing early Saturday near these locations. Heading into later Saturday morning to afternoon primarily VFR conditions are except at EAT where some lower conditions are possible, but confidence is low. FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: Moderate confidence MVFR develop late this evening into overnight at GEG/SFF. Moderate to high confidence COE will trend to VFR later tonight into early Saturday as the winds increase. Moderate confidence in MVFR/IFR conditions pushing toward MWH/EAT overnight/early Saturday, but low confidence in fog. Moderate to high confidence in VFR conditions at PUW/LWS. ----------------------- 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 27 39 29 41 33 44 / 0 0 0 10 10 30 Coeur d`Alene 25 40 29 42 33 44 / 0 0 0 20 10 40 Pullman 29 41 31 42 33 45 / 0 0 0 0 10 30 Lewiston 30 45 32 47 35 50 / 0 0 0 0 0 10 Colville 24 38 27 39 29 42 / 0 0 10 40 20 40 Sandpoint 27 38 29 39 33 41 / 0 0 10 40 30 50 Kellogg 28 43 31 42 35 44 / 0 0 0 10 10 50 Moses Lake 27 40 29 42 30 46 / 0 0 0 10 10 10 Wenatchee 31 39 32 39 34 46 / 0 0 10 30 30 40 Omak 29 38 30 39 33 41 / 0 0 0 20 30 40 && .OTX WATCHES/WARNINGS/ADVISORIES... WA...None. ID...None. && $$

293 FXUS66 KPDT 092219 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 219 PM PST Fri Jan 9 2026 .DISCUSSION... Key Points: 1. High Pressure over the region through Saturday. 2. A system will bring precipitation, mainly to the Washington Cascades early next week. Very warm temperatures also early next week. 3. High Pressure re-establishes itself for the remainder of the week. High Pressure will remain in place over the western CONUS through Saturday. This high will bring dry weather to the region. By Sunday, the ridge will flatten as a weather system moves mainly over the Washington Cascades and will bring precipitation. The precipitation will continue into Monday, before ending on Tuesday. Snow levels will initially be in the 3000-4000 foot range early Sunday, but they will rise to over 6000 feet by Monday and continue to rise to over 8000 feet by Tuesday. As a result, mostly rain is expected with this event. Over 1 inch, and even close to 1.5 inches of QPF is possible along the crest of the Washington Cascades through Tuesday with lesser amounts further down. This rain, which is picked up by the ECMWF EFI would be in the 70th to 80th percentile during this time. QPF did come up a bit with the 12Z run, so will continue to monitor. The Naches River at Cliffdell is expected to get just above Action Stage by early next week and the Naches River near Naches gets close to Action Stage. These forecasts will also be monitored. Current forecasts along the Yakima River keep them all below Action Stage, though they all rise. Southerly winds will also become gusty Saturday and Sunday across the Grande Ronde Valley, mainly in the 25 to 30 mph range, but at this point, wind advisories do not look to become necessary. After Tuesday, a large and strong area of high pressure sets up through at least the end of the week. This will continue dry weather over the region. Depending on the location of the high and if cold air is trapped beneath it, there could end up being fog/stratus/air stagnation issues in the long term. High temperatures Monday through Wednesday will be in the 50s in many lower elevation areas Monday and Tuesday and may push 60 degrees in central Oregon. These temperatures would be 10 to 15 degrees above normal and could be as much as 20 degrees above normal in some locations. The ECMWF EFI has most of Oregon and Washington in 0.8 to 0.9 anomalies for high temperatures Tuesday and Wednesday, with some embedded areas of 0.9 to 0.95. On Monday the area is focused mainly across the Columbia Basin, and by later in the week, the areal coverage shrinks, but still exists across portions of central and eastern Oregon. && .AVIATION... 00z TAFs...VFR conditions expected through the period. Winds will be light and terrain-driven, with sct-bkn mid-level cigs during the evening becoming more ovc overnight. 74 && .PRELIMINARY POINT TEMPS/POPS... PDT 30 49 30 49 / 0 0 0 0 ALW 34 48 33 47 / 0 0 0 0 PSC 29 45 29 44 / 0 0 0 0 YKM 30 43 30 44 / 0 0 0 10 HRI 30 45 29 46 / 0 0 0 0 ELN 26 39 29 40 / 0 0 10 30 RDM 26 50 26 52 / 0 0 0 0 LGD 27 42 30 43 / 0 0 0 0 GCD 27 47 28 49 / 0 0 0 0 DLS 33 45 33 46 / 0 0 0 10 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...None. WA...None. && $$ SHORT TERM...77 LONG TERM....77 AVIATION...74

172 FXUS65 KREV 091956 AFDREV Area Forecast Discussion National Weather Service Reno NV 1156 AM PST Fri Jan 9 2026 .KEY MESSAGES... * High pressure overhead will result in dry weather and warmer temperatures this weekend into next week. * Morning inversions may bring freezing fog concerns to Sierra valleys and air quality concerns to W NV valleys. && .DISCUSSION... A warming trend initiates today, with afternoon highs steadily warming through at least mid-next week as high pressure builds over the Pacific Northwest. We will quickly warm to near normal this weekend, with highs 5-10 degrees above normal by mid-next week. This looks like low 50s for W NV and upper 40s for Sierra communities. Cold morning lows will also warm this week, but will remain below freezing for much of the area with upper 20s for W NV and teens in the Sierra. Light winds will allow valley inversions to set back up, bringing the potential for localized air quality concerns in W NV valleys. Additionally, there is a 40% chance for freezing fog to develop in Sierra valleys, such as the Martis valley, tonight and tomorrow morning. -Giralte && .AVIATION... FZFG and IFR/LIFR conditions overnight and through the morning hours will be the main weather concern, particularly for KTRK. Slantwise visibilities may also be reduced due to W NV valley inversions. Otherwise, expect VFR conditions and light breezes through the weekend. -Giralte/Salas && .REV Watches/Warnings/Advisories... NV...None. CA...None. && $$

116 FXUS66 KSTO 092033 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 1233 PM PST Fri Jan 9 2026 .KEY MESSAGES... - Dry weather expected next 7 days with areas of patchy morning fog and cold overnight/morning temperatures through the weekend. - Increasing potential for a return to more widespread Valley fog/low clouds and warm/dry weather at higher elevations into next week. && .DISCUSSION... ...Rest of Today into the Weekend... Current satellite imagery from early this afternoon shows mostly clear skies across interior NorCal as ridging aloft is beginning to build into the region. As a result, similarly seasonable temperatures persist today, before plunging toward the teens and 20s at high elevations and lower 40s to near freezing in the Valley and foothills overnight into Saturday morning. Widespread frost at low elevations is still not anticipated, but patchy frost will remain possible, especially in typically cooler locations. As lighter, but still breezy, north winds continue today, Valley fog development is expected to remain patchy into Saturday with current probabilities of visibility less than a half mile around 20 to 40 percent. Through the weekend, the ridging feature aloft will continue building in over the West Coast, although it is not expected to settle in place until early next week. A weak shortwave passing well to the north of the area will provide some sporadic high cloud cover throughout the weekend, with minimal direct impacts anticipated. This cloud cover may mitigate further fog development, however, with similar 20 to 40 percent probabilities for Valley fog into Sunday morning. ...Next Week... As the aforementioned building ridge aloft finally settles in and amplifies over the west coast by next week, a stagnating weather pattern is expected to persist throughout the extended forecast period. While some details regarding wind and surface moisture will likely impact initial fog development, this arriving pattern will be favorable for a return to widespread Valley fog/low clouds and warm/dry weather at higher elevations. Where fog/low clouds do not develop or dissipates earlier in the day, warm, above normal temperatures will be likely given the expected amplitude of the building ridge. Additionally, breezy to gusty terrain driven winds, strongest overnight and early morning, will remain persistent at higher elevations. Ensemble guidance does indicate potential for additional northward ridge amplification late next week, which would bring breezier north winds to the Valley and possibly disrupt the fog/low cloud pattern. && .AVIATION... VFR conditions prevail through the afternoon and evening hours, with BR/FG moving in around 08z through 10z. Best chances for FG will be in SCK and MOD, with lower chances near RDD and RBL. Visibility reductions near and around FG when it develops. FG starts to dissipate after the TAF period (tomorrow afternoon). Winds will be light and variable through the TAF period. && .STO WATCHES/WARNINGS/ADVISORIES... None. && $$

423 FXUS65 KMSO 092013 AFDMSO Area Forecast Discussion National Weather Service Missoula MT 113 PM MST Fri Jan 9 2026 .DISCUSSION... KEY MESSAGES: - Ridge Building This Weekend: Drier weather and warming temperatures aloft will move in Saturday. This pattern typically traps cold air in the valleys, leading to persistent fog and potential air stagnation by early next week. - Complex System Monday-Tuesday: Moisture moving into stable air/valley inversions will bring a wintry mix in precipitation, especially Monday morning. A few mountains are experiencing showers under northwest flow, this activity may continue through late afternoon. Northwest flow will weaken by Saturday as high pressure propagates eastward. Atmospheric expansion under the ridge of high pressure will allow for warming temperatures in the mid- slopes. Models are predicting periods of clouds rotating through the ridge, timing of these clouds will be crucial in how strong valley inversions develop. There is some confidence that well developed cold pools will be possible north of I-90 due to snow cover, while south of I-90 remains some questions. Strength of cold pools is important because a weak atmospheric river is expected to impact the Northern Rockies Monday into Tuesday. This AR will be capable of producing wind gusts overnight Monday of 35 to 45 mph in the mountains. Additionally, there is a spread in precipitation amounts of 0 to 0.50 inch north of I-90 in the mountains and 0.00 to 0.15 of an inch in the valleys. If valley cold pools are as strong as expected, a period of mixed precipitation (freezing rain) will be possible Monday morning and less likely but again Tuesday morning. Impacts in valleys, especially north of I-90, are scattered areas of icy roadways. Watch future forecast updates for the potential issuance of winter weather products. While a brief period of snow is expected at pass level, the transition from snow to rain may also include a period of freezing rain. The ridge rebuilds Tuesday into the middle of the week. In locations where cold pools are weakened or scoured out, high temperatures by mid-week could be mid-50s in MT and 60s in north- central ID. && .AVIATION... Ongoing snow showers will cause obscured terrain and intermittent lowered visibility through around 10/02z. As high pressure builds tonight, the northwesterly flow will likely maintain a persistent stratus deck overnight, which is typical with an exiting weather system. While continued cloud cover is most likely, fog development cannot be ruled out by Saturday morning especially in valley locations with fresh snow. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...None. ID...None. && $$

053 FXUS65 KBOI 092123 AFDBOI Area Forecast Discussion National Weather Service Boise ID 223 PM MST Fri Jan 9 2026 .SHORT TERM...Tonight through Sunday night...High pressure is firmly along the West Coast and will be building into the Intermountain West through the period, which is stabilizing the atmosphere. As skies clear and winds aloft decrease, cold air will pool in the lower valleys of southeast Oregon and southwest Idaho beginning tonight. This setup is conducive to an inversion developing along with the formation of fog and low stratus, which is likely to develop late tonight and persist into Saturday morning, particularly in the Magic, Baker and Long Valleys. This stagnant pattern will hold firm through the weekend. While mountain locations will see abundant sunshine and moderating temperatures, valley locations will remain cooler with limited mixing. Daytime highs in the inverted valleys will struggle to climb, while mid-slopes and ridge tops warm above seasonal normals. No precipitation is expected through the short term period. .LONG TERM...Monday through Friday...Dry and stagnant conditions will prevail through the week as high pressure remains persistent over the region. Models have continued to push the slight chance in northern areas further north on Monday, leaving only a sliver of 10% chance of snow/rain showers in Valley county. The high pressure will then close off the California coast and amplify as it moves into the Gulf of Alaska. This will set up a strong blocking pattern continuing inverted/stagnant conditions through Friday. Cold pools will develop in sheltered valleys, bringing a chance of valley fog and keeping temperatures below normal in most lower elevation valleys while mid slopes and ridgetops will see above normal temperatures. Models begin to show a weakening in the blocking pattern around next Friday the 16th. Interestingly, shortly after this hint of weakening, while deterministic and ensemble height charts come out of agreement, the teleconnections all show a sharp trend to negative values (Primarily EPO, PNAO, WPO. I`m mentioning teleconnections in a forecast discussion, can you tell the long term is dry and stagnant yet?). The negative TC values favor the breakdown of the blocking pattern, especially as we trend towards ENSO neutral. && .AVIATION...VFR in a stratus deck over much of the region, expected to clear this evening. Mountains obscured in the stratus. After the stratus clears this evening, mountain valley fog and lowland stratus becomes possible again tonight and tomorrow morning. Surface winds: variable less than 10 kt, except the Western Magic Valley maintaining W-SW 15-25 kt. Winds aloft at 10kft MSL: N 5-15 kt. KBOI...VFR with clouds clearing. 10% chance of low clouds tonight development, if any, will favor the river. Surface winds: E-SE 3-7 kt. Weekend Outlook...Mostly VFR with clear skies on Saturday and increasing clouds on Sunday. Localized LIFR-IFR conditions in patchy morning fog in sheltered valleys. Generally variable surface winds less than 10 kt. && .AIR STAGNATION...A strong upper level ridge will remain centered over the region through the weekend and into next week. This pattern will support the development of steep low level inversions and very weak transport winds. Forecast mixing heights are expected to remain well below 1500 feet AGL for extended periods. These conditions will severely limit ventilation, leading to the accumulation of pollutants in valley locations. An Air Stagnation Advisory has been issued for all valley zones in southeast Oregon and southwest Idaho and remains in effect until Thursday morning though there is low confidence (30% chance) atmospheric mixing will improve by that time. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...Air Stagnation Advisory from 11 PM this evening to 5 AM MST Thursday IDZ011>014-016-028-033. OR...Air Stagnation Advisory from 11 PM MST /10 PM PST/ this evening to 5 AM MST /4 AM PST/ Thursday ORZ061>064. && $$ www.weather.gov/Boise Interact with us via social media: www.facebook.com/NWSBoise www.x.com/NWSBoise SHORT TERM...JDS LONG TERM....JM AVIATION.....JM AIR STAGNATION...JDS

178 FXUS65 KLKN 091936 AFDLKN Area Forecast Discussion National Weather Service Elko NV 1136 AM PST Fri Jan 9 2026 .KEY MESSAGES... Updated at 1134 AM PST Fri Jan 9 2026 * High pressure and quiet conditions expected through the forecast. && .DISCUSSION... (This afternoon through next Friday) WEATHER PATTERN OVERVIEW: Little change from yesterday, with high pressure still expected to be the dominant pattern through next week. Temperatures are still expected to warm day by day, becoming ten degrees above normal by the weekend and near record highs expected by mid to late week. While this pattern persists it will suppress any precipitation possibilities and keep conditions dry. FORECAST CONFIDENCE & DEVIATIONS: High confidence in high pressure persisting through next week. && .AVIATION...Clear skies and winds 10KT or less expected at all sites except KTPH, which is expected to see some daytime gusts up to 20KT today, clearing by 00Z. && .LKN Watches/Warnings/Advisories... None. && $$ DISCUSSION...94 AVIATION...94