939 FXUS66 KSEW 221526 AFDSEW Area Forecast Discussion National Weather Service Seattle WA 826 AM PDT Tue Sep 22 2026 .SYNOPSIS... Upper level troughing will continue to bring onshore flow and cooler temperatures through midweek. A weak system will bring light rain today into Wednesday. A stronger system will bring more widespread rain and slightly cooler temperatures to the area Thursday and Friday. Unsettled conditions continue over the weekend with likely additional precipitation. && .SHORT TERM /TODAY THROUGH THURSDAY/... The latest forecast remains on track this morning with no updates outside of the Aviation and Marine sections below. Expect morning clouds to start to dissipate by the mid afternoon hours, with a mix of sun and mid level clouds the rest of the day. High temperatures will warm up in the mid to upper 60s, with areas in the Southwest Interior being a touch warmer, maybe in the low 70s. A weak disturbance will cross over the area into Wednesday, with a chance of showers across the area, especially in the morning. Most of the area will remain dry as this system is rather weak. High temperatures remaining generally in the mid 60s for much of the interior, with locations along the coast seeing the influence of onshore flow, with temps in the low 60s. Ensembles continue to be in agreement with a slightly stronger and wetter frontal system Thursday into Friday. Widespread rain will spread throughout the interior by Thursday afternoon and evening, with areas in the Cascades and Olympics seeing the bulk of the precip. With this frontal system, snow levels will lower to 6000 to 7000 feet, with some higher elevation peaks seeing their first dusting of snow for the season. High temperatures Thursday will cool, with most areas seeing upper 50s to lower 60s. && .LONG TERM /THURSDAY NIGHT THROUGH MONDAY/... Rain will continue on Friday and become more scattered in nature later in the day, with cooler temperatures in the upper 50s to low 60s continuing. Upper level troughing continues over the weekend, with additional chances of precipitation and cooler temperatures. There is still some uncertainty in ensembles, but for now, it looks like fall weather is here. Mazurkiewicz && .AVIATION... Mostly a mix of VFR to MVFR ceilings across the terminals this morning with stratus across the interior. Ceilings will improve back to more widespread VFR across the area through late morning and into this afternoon. A weak frontal system moving into western Washington tonight into early Wednesday will bring another round of lower ceilings Wednesday morning, with most guidance suggesting ceilings lowering to low-end VFR or MVFR. Northeast winds this morning between 4-8 kt will transition to the southwest in the afternoon. Winds at KCLM will be out of the west and a bit stronger, likely between 6-12 kt. KSEA...Conditions starting to improve back towards VFR at the terminal this morning, though may still see some brief periods of MVFR ceilings through late morning as low clouds remain in the vicinity of the terminal. VFR conditions will then prevail through the remainder of the period. Expect another lowering of ceilings Wednesday morning, but latest guidance keeps conditions VFR with ceilings remaining above 3500 ft. Northeast winds at 4-8 kt persist at the terminal this morning and will switch to the southwest this afternoon around 21Z. HPR/14 && .MARINE... Westerly winds continue to ease this morning along the central and east Strait. A weaker push is likely to occur this afternoon and evening, though wind gusts look likely to remain below 20 kt for the majority of the Strait. An additional front will pass through tonight into Wednesday with little to no impact expected. A stronger system will move through Thursday into Friday with more precipitation, as well as an increased likelihood of seeing winds/wind gusts over 20 kt in the coastal waters and Strait of Juan de Fuca. Another system will pass through the waters late next weekend, but does not appear to produce hazardous winds to the waters at this time. Seas 6 to 8 feet today with isolated pockets of 9 feet but with longer northwest periods of 10 to 12 seconds. Seas will drop back to 6 to 8 feet by Wednesday. HPR/14 && .SEW WATCHES/WARNINGS/ADVISORIES... WA...None. PZ...None. && $$

580 FXUS66 KPQR 221147 AAA AFDPQR Area Forecast Discussion...UPDATE National Weather Service Portland OR 447 AM PDT Tue Sep 22 2026 Updated aviation discussion. .SYNOPSIS...Broad upper level troughing over the Gulf of Alaska will maintain dry southwest flow aloft over northwest OR and southwest WA through Thursday morning, bringing mainly dry weather and slightly cooler than normal high temperatures in the mid 60s to lower 70s. Troughing over the Gulf of Alaska deepens early Thursday and begins progressing eastward towards the Pacific Northwest. Confidence is now high this trough will move inland late in the week, bringing widespread rain to the entire area late Thursday into Friday. Weak high pressure builds in behind the trough on Saturday, bringing dry weather. Chances for showers increase again Sunday into Monday, but only up to 10-30%. && .SHORT TERM...Now through Wednesday night...The short term forecast is highlighted by mainly dry weather with slightly cooler than average temperatures. Starting off with early Tuesday morning, satellite and surface weather observations depicted widespread low clouds expanding across nearly all of southwest WA and northwest OR from the coast to the Cascades. A band of high clouds associated with a weak upper level impulse was also evident over the area. Given mostly cloudy conditions are expected for much of the day, temperatures will remain slightly below average for this time of year with highs mainly in the mid 60s to lower 70s over the lowlands. Similar conditions are expected on Wednesday given little change in the weather pattern, albeit a degree or two cooler. Will note there is a 10-20% chance for light rain showers over the south WA/north OR coast and Willapa Hills Wednesday morning as a very weak surface front moves inland and decays. The rest of southwest WA and northwest OR should stay dry through Wednesday night. -23 .LONG TERM...Thursday through Monday night...Weather conditions begin to change considerably Thursday into Friday as a broad upper level trough over the Gulf of Alaska deepens and progresses eastward over the Pacific Northwest. Now that model ensemble guidance is in excellent agreement this trough will move inland without significant deamplification, confidence is high for widespread rain over all of northwest OR and southwest WA late Thursday into Friday (80-90% chance). The exact timing rain will begin remains uncertain, but most guidance suggests rain will begin sometime between Noon-11 PM Thursday with rain beginning closer to the start of that range at the coast/Coast Range and closer to the end of that range for the Willamette Valley, Portland metro, Cascades/foothills, Columbia River Gorge, and Cowlitz Valley. Rain is expected to end fairly quickly from west to east Friday evening into Friday night as weak high pressure builds in behind the trough. Forecast rain totals with this system have increased to 0.3-1.0 inches, with the highest totals in the mountains and the lowest totals in the Willamette Valley, Cowlitz Valley, and Portland metro. Chances for rain totals over 1 inch range between 15-35% in the Willamette Valley, Cowlitz Valley, and Portland metro to 35-55% for the coast, Coast Range, and western slopes of the Cascades. It appears the only way locations in the Willamette Valley, Cowlitz Valley, or Portland metro could see rain amounts that high is if heavier showers and thunderstorms hit a given area on Friday. Confidence in the thunderstorm potential on Friday remains low, however probabilities for thunder have increased slightly to 20-25%. LREF guidance currently suggests limited instability with SBCAPE values most likely peaking around 50-150 J/kg with a 10% chance for values as high as 250-300 J/kg. The latter would only occur if there are sufficient breaks of sun Friday morning into the afternoon to allow for enough surface heating to steepen lapse rates. If breaks of sun do occur, then the potential for heavier showers and low-topped thunderstorms would increase Friday afternoon. Given what appears to be a decent wind shear profile in place at that time (0-3 km shear values around 20-30 kt), any stronger shower or thunderstorm would have the potential to produce gusty outflow winds. Even away from convection, environmental surface winds look to be rather breezy with wind gusts most likely peaking within the 20-30 mph range. In fact, the NBM is showing a 5-15% chance for max wind gusts as high as 40 mph or stronger on Friday. While wind gusts of this magnitude are unlikely to occur, it is worth mentioning as these wind speeds would be enough to result in minor tree damage and isolated power outages given leaves are still on trees. Those hoping for dry weather come Saturday are in luck, as models remain in good agreement for high pressure behind the trough. As such, chances for rain on Saturday are less than 10%. Chances for showers increase slightly Sunday into Monday, but only up to 10-30%. Temperatures will likely stay cooler than average over the weekend with highs in the 60s. It is also worth mentioning overnight lows will trend chillier, especially in the Upper Hood River Valley where morning lows may get cold enough to support frost Saturday morning and Sunday morning; this is when the NBM is showing a 30-50% chance for morning lows of 37 degrees or colder in the Parkdale area and 10-15% chance near Odell. -23 && .AVIATION...Through 12Z Wednesday...At 1145Z Tuesday, widespread stratus remained in place from the coast to the Cascades, resulting in a mix of high-end IFR to low-end MVFR ceilings along the coast and MVFR ceilings inland. Between 13-16Z Tuesday, chances for IFR ceilings below 1000 ft increase to 10-25% for inland TAF sites, except 40-50% at KEUG. Expect low stratus to scatter out and lift to VFR thresholds sometime between 19-23Z Tuesday, with ~21Z being the most likely outcome. Winds will stay under 5-10 kt throughout the TAF period. KPDX AND APPROACHES...MVFR ceilings around 2500 ft will continue through at least Tuesday morning before low clouds scatter out and lift to VFR thresholds sometime between 19-23Z Tuesday, with ~21Z being the most likely outcome. While unlikely to occur, there is a 10-15% chance for broken IFR ceilings near 1000 ft or lower between 13-16Z Tuesday. Winds will range anywhere from calm to light northwest around 3-5 kt throughout the TAF period. -23 && .MARINE...High pressure will maintain predominately northerly winds across the waters through at least Wednesday night. An exception would be Tuesday afternoon to Wednesday morning, when winds may turn more westerly to southwesterly for the waters north of Cape Falcon with the passage of a weak front. Winds become northeasterly over the waters for a brief period of time Thursday morning and early afternoon ahead of an approaching frontal system. This frontal system will move over the coastal waters late Thursday into Friday, bringing increasing northwesterly winds and rain. This front will be relatively stronger than the frontal passage Tuesday afternoon into Wednesday morning, and chances for small craft advisory level wind gusts of 21 kt or stronger have increased to 60-80% with this system. The highest probabilities are over the northern waters to the north of the Columbia River Bar. In fact, there is even a 15-25% chance for max wind gusts of 34 kt or stronger, as some guidance suggests a stronger area of low pressure is possible over the coastal waters with this system. However, the most likely outcome is for a relatively weaker low with peak gusts somewhere in the 20-25 kt range. Seas will most likely range between 6 and 9 ft through Friday, but are not expected to be particularly steep at any point in time due to dominant wave periods of 10 to 13 seconds. However, there is a 15-20% chance seas will peak at 10 ft or higher late Thursday night into Friday. This would only occur if the aforementioned area of low pressure comes in stronger than what most guidance suggests. -23 && .PQR WATCHES/WARNINGS/ADVISORIES... OR...None. WA...None. PZ...None. && $$ www.weather.gov/portland Interact with us via social media: www.facebook.com/NWSPortland x.com/NWSPortland

346 FXUS66 KMFR 221137 AFDMFR Area Forecast Discussion National Weather Service Medford OR 437 AM PDT Tue Sep 22 2026 .KEY MESSAGES... * Seasonable temperatures and dry conditions will prevail most of this week * Rain chances increase Thurs/Fri (20%-60%) with isolated thunderstorm possible (10%-20%) along and west of the Cascades * The front Thurs/Fri will be mostly dry east of the Cascades, but will produce breezy winds * Below normal temperatures and dry conditions are then expected through the weekend && .DISCUSSION... A closed low continues to pass south/southeast of the forecast area today. As the low exits to the east, we will experience mostly zonal flow over the forecast area which will lead to generally quiet weather with very little impacts/hazards over the next couple days. By Thursday, the upper flow becomes more southwesterly as a trough develops over the Pacific. Deterministic models are in much better agreement now with good consensus through later parts of this week. Showers and isolated thunderstorm activity will likely stay over westside areas, but light rainfall could occur for some eastside areas. Currently, instability is very meager, so not expecting much in the realm of thunderstorm chances, but we could see some isolated activity across the area with Friday having the relatively better chances albeit still very low based on MUCAPE values. Probabilities for rainfall are much better for westside areas. The probability for 0.25" of rainfall over 48 hours ranges from 25% to 75% for westside areas, with the chances highest along/near the coast and gradually decreasing as you go east/inland. Official amounts generally range from about a tenth of an inch to around 0.75" over roughly 36-48 hours. Highest amounts along/near the coast and northern parts of Douglas County. Eastside areas could see around a trace to around a tenth of an inch of rainfall. It will also be breezy for eastside areas as the trough passes through the region with Friday having slightly more enhanced breezes as the trough axis passes over the forecast area. Thereafter, temperatures drop Friday and through the weekend as the trough pushes eastward. For example, Medford may only reach the upper 60s for a high on Friday with temperatures struggling to reach the 70s through the weekend for lower elevations/warmer locations. In other words, expecting a noticeable cool down (below normal temperatures) through the weekend. && .AVIATION (12Z TAFs)... Low clouds along/near the coast will maintain IFR conditions for KOTH through early this afternoon, but some relief is expected this afternoon that could lead to VFR conditions. There is some uncertainty for low clouds tonight for North Bend, and at this time hinted at the possibility with a scattered deck, but guidance is split on whether these lows clouds will warrant any categorical chances. At this time, will go with the VFR solution for tonight at KOTH but this might be a little aggressive, and we may need to reevaluate this in subsequent TAFs. Otherwise, KRBG could experience MVFR conditions later this morning as low clouds continue to fill in the Umpqua basin. KMFR and KLMT will likely remain in VFR through this cycle with only high clouds expected. && .MARINE...Updated 400 AM PDT Tuesday, September 22, 2026... Gusty north winds will maintain steep seas south of Cape Blanco through this evening, except for very steep seas south of Gold Beach and within 30 nm of shore. This includes near shore winds south of Brookings becoming strong this afternoon and evening. Conditions improve slightly Wednesday and more noticeably on Thursday, before a thermal trough strengthens again on Friday. && .MFR WATCHES/WARNINGS/ADVISORIES... OR...CA...None. PACIFIC COASTAL WATERS...Small Craft Advisory until 11 PM PDT this evening for PZZ356-376. Hazardous Seas Warning until 11 PM PDT this evening for PZZ356- 376. && $$

864 FXUS66 KEKA 220855 AFDEKA AREA FORECAST DISCUSSION National Weather Service Eureka CA 155 AM PDT Tue Sep 22 2026 .KEY MESSAGES... * Near to slightly above average temperatures inland continue through Wednesday with the warmest temperatures in Lake County. * Marine clouds along the coast will slowly thin out this afternoon and evening, leading to a 70% chance of afternoon sunshine at the immediate coast. * A passing cold front brings a high chance (70-90%) of light rain to Del Norte and northern Humboldt late Thursday night into Friday, with lower probabilities (under 20%) south into Mendocino and Lake counties. && .SYNOPSIS...High pressure off the Pacific Northwest combined with an interior thermal low will maintain warm, dry conditions across the interior through Wednesday. Marine clouds may finally clear in the afternoons Tuesday and Wednesday. An approaching cold front introduces cloud cover and a high chance of measurable rain to Del Norte and northern Humboldt counties late Thursday night into Friday. && .DISCUSSION...An upper-level shortwave trough off the Central California coast continues to weaken the ridge aloft, drawing high cirrus across the region. At the surface, dry conditions remain driven by the zonal onshore pressure gradient established between the eastern Pacific surface high and the interior thermal low. Interior high temperatures remain around normal to slightly above normal in the mid to high 80s to the low 90s through Thursday. Model ensembles depict a brief shortwave ridge axis moving rapidly across the region early Thursday morning, bringing a transient positive height anomaly aloft before height falls overspread the forecast area ahead of an incoming cold front late Thursday night into Friday morning. Ensemble probabilities for 12-hour measurable precipitation peak late Friday morning at 70 percent across Del Norte, northern Humboldt, and northern Trinity counties. Probabilities drop to 30 percent across southern Humboldt and central Trinity, falling under 10 percent across Mendocino and near 0 percent in Lake County. Behind the boundary, 850 mb temperatures drop significantly, bringing an 80% likelihood of daytime highs settling in the lower to mid-70s over the weekend. Valley frost potential behind the front remains below 15% due to persistent boundary-layer mixing. /MH && .AVIATION...IFR to MVFR stratus is likely for both coastal terminals through sunrise. A brief dip to LIFR along with visibility reductions are possible around sunrise. Stratus will likely lift and scatter shortly after sunrise and at least partial clearing is likely by the afternoon as winds increase. Breezy north winds are likely at CEC, with gusts likely above 20 kts. Consistent south wind at UKI may bring stratus from the south up the Russian River Valley. Chances of this are low (20% or less) as the marine layer remains shallow. Should stratus arrive, it will quickly lift after sunrise. Otherwise, interior areas are likely to remain VFR for the next 24 hours. /JB && .MARINE...Steep, short-period wind waves continue to dominate the coastal waters as the zonal onshore pressure gradient drives fresh to strong northerly flow. In the Northern Inner Waters, north winds will average 10 to 15 knots, keeping Small Craft Advisory conditions localized, though steep waves near 6 feet at 8 seconds will occasionally spill into areas south of Trinidad Head. In the Southern Inner Waters, Small Craft Advisory conditions persist as northerly winds of 15 to 25 knots with gusts to 35 knots build steep seas to 6 to 11 feet through Wednesday evening. In the Southern Outer Waters, north winds will build to 25 to 30 knots with near- gale gusts up to 35 knots through the day today, pushing total wave heights to 8 to 12 feet at 8-second periods. In the Northern Outer Waters, north winds of 15 to 25 knots and 7 to 10-foot steep seas will gradually subside mid-week. /MH && .EKA WATCHES/WARNINGS/ADVISORIES... CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory until 9 PM PDT Wednesday for PZZ455. Small Craft Advisory until 9 AM PDT Wednesday for PZZ470. Small Craft Advisory until 9 AM PDT Thursday 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

411 FXUS66 KMTR 221606 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 906 AM PDT Tue Sep 22 2026 ...New UPDATE, MARINE... .KEY MESSAGES... Updated at 1201 AM PDT Tue Sep 22 2026 - Warming trend begins today through Thursday - Cooler conditions Friday into the weekend && .UPDATE... Issued at 904 AM PDT Tue Sep 22 2026 There was coastal drizzle reported at several locations this morning, but nothing more than a few hundredths of an inch. Stratus pushed well inland into most interior valleys early this morning and is forecast to retreat to the immediate coast by late morning/early afternoon. This will give way to mostly sunny conditions inland this afternoon with temperatures warming into the 60s near the coast, upper 60s to low 70s around the bayshore, and mid 70s to mid 80s across the interior. Coastal areas will be some 5-10 degrees below seasonal averages with the interior holding near average. A warming trend remains on tap for Wednesday and Thursday, yet no significant heat anticipated with this brief warming trend. RGass && .SHORT TERM... Issued at 1201 AM PDT Tue Sep 22 2026 (Today and tonight) Extensive stratus has flowed into the North Bay valleys, Monterey Bay region, Salinas Valley, Hollister area, and the East Bay west of the Berkeley Hills. Across the rest of the SF Bay Area, patches of stratus have developed near Livermore and north of San Jose, with further expansion expected through the pre-dawn hours. The cloud deck retreats back to the immediate coast late this morning into the early afternoon, but by the time it develops again tonight, the marine layer will be compressed, leading to uncertainty over just how far inland the clouds will go. The cut-off low that gave us the last couple days of cooler temperatures is moving across the state with the center crawling through the Mojave Desert into the Great Basin. This allows for more zonal flow to come into the state and a warming trend to begin today, with high temperatures in the upper 70s to the middle 80s across the inland valleys, into the upper 80s in the far interior regions of the North Bay and southern Monterey County, the middle 60s to the middle 70s close to the Bays, and the lower to middle 60s along the immediate coast. A breezy onshore wind will develop in the afternoon and evening hours, with the strongest gusts of 20 to 30 miles per hour along the coast, through favored gaps and passes, and within the northern Salinas Valley. As a quick side note, today will mark the autumnal equinox and the start of astronomical fall. At 505 PM Pacific time, the sun`s apparent path on the Earth crosses the equator, giving us 12 hours each of sunlight and nighttime. && .LONG TERM... Issued at 1201 AM PDT Tue Sep 22 2026 (Wednesday through Monday) Slight ridging will develop over California over the next couple of days, and while the ridge axis quickly moves into the Intermountain West, the ridge influence will allow for further warming Wednesday and Thursday. High temperatures warm into the middle 80s to the middle 90s in the inland valleys, the middle 70s to the middle 80s close to the Bays, and the middle 60s to the lower 70s along the Pacific Coast. Pockets of Moderate HeatRisk are scattered across the interior regions, particularly near San Jose, the interior East Bay, and the Santa Lucia range. These pockets are not expansive enough to merit a Heat Advisory. By Friday, a developing trough in the eastern Pacific comes into the West Coast, and a cooling trend will cause temperatures to dip near and below seasonal averages. Weekend highs range from the middle 70s to the middle 80s in the inland valleys and the middle 60s to the middle 70s close to the Bays. Temperatures will recover early next week as the trough flattens and ensemble model cluster analysis hints at a ridge developing somewhere within the western United States, although the exact impacts are not certain at this point. && .AVIATION... (12Z TAFS) Issued at 427 AM PDT Tue Sep 22 2026 Solid marine layer push overnight leading to mostly MVFR to IFR conditions. Seeing some compression on the marine layer leading to some patchy fog and dz/ra being reported. Expect clearing/rolling back to the coast mid to late morning most areas. HAF and MRY will hold onto CIGS for most of the day. Tonight, N-S gradient increases so less conf for stratus N and E Bay. Overall conf is moderate. Vicinity of SFO...Much more optimistic for the TAF as SE flow caused rapid drying/clearing earlier in the night. Still watching a bank of clouds due E of SFO inching W. Carrying a tempo for now, but conf is low on actual impacts to terminal. SFO Bridge Approach...Similar to SFO. CIGs far E fringe of approach. Monterey Bay Terminals...IFR with low cigs, br, and dz/ra through 18z-ish . A few hours of VFR this afternoon, but CIGs and MVFR/IFR return early tonight. && .MARINE... (Today through Sunday) Issued at 904 AM PDT Tue Sep 22 2026 Fresh northwest breezes with strong gusts gradually diminish across the southern coastal waters by Wednesday morning. Wind driven rough seas abate to moderate for a brief period Wednesday night into Thursday with widespread moderate northwest winds. By Friday, winds increase with building rough seas. && .FIRE WEATHER... Issued at 434 AM PDT Tue Sep 22 2026 Solid marine layer coverage along the coast and Salinas Valley overnight. Sounding and profilers put the depth of the marine layer around the 2,000-2,500 foot range. Definitely some compression on the marine layer leading to drizzlefest around the area. Seeing some reduced vsby too, which may lead to patchy fog early this morning for crews departing ICP for Timber/Plaskett. Above the marine layer moderate to excellent humidity recovery for the most part with the driest conditions above 3,000 feet. Otherwise, still valid for a warming and drying trend kicking off Tuesday with temperatures up to 10 degrees above normal and areas of moderate HeatRisk Wednesday and Thursday. The marine layer will compress below 1,000 feet during this warm-up with nocturnal drying expected above it. MM && .MTR WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...Small Craft Advisory until 5 AM PDT Wednesday for Pt Arena to Pt Reyes 0-10 nm. Small Craft Advisory from 3 PM this afternoon to 9 PM PDT this evening for Pigeon Pt to Pt Pinos 0-10 nm. Small Craft Advisory from 3 PM this afternoon to 3 AM PDT Wednesday for Pt Pinos to Pt Piedras Blancas 0-10 nm. Small Craft Advisory until 3 AM PDT Thursday for Pt Arena to Pt Reyes 10-60 NM. Small Craft Advisory from 3 PM this afternoon to 5 AM PDT Wednesday for Pigeon Pt to Pt Pinos 10-60 NM. && $$ SHORT TERM...DialH LONG TERM....DialH AVIATION...MM MARINE...Navarrete 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

114 FXUS66 KOTX 220749 AFDOTX Area Forecast Discussion National Weather Service Spokane WA 1249 AM PDT Tue Sep 22 2026 .KEY MESSAGES... - Cloud cover increases and winds become breezy out of the west Tuesday into Wednesday. - Afternoon highs trend cooler Tuesday through the weekend, falling into the upper 50s to mid 60s by Saturday. - An incoming weather system brings stronger winds and an increasing risk for rain and high mountain snow Thursday through Saturday. && .SYNOPSIS... Conditions remain dry with breezy afternoons Tuesday and Wednesday. A stronger weather system Thursday through Saturday will bring gusty winds, rain, and chances for high mountain snow. Temperatures trend cooler Tuesday into the weekend with afternoon highs falling into the upper 50s to mid 60s by Saturday. && .DISCUSSION... Tuesday through Wednesday: An upper level low pressure system is set to strengthen just off the northern British Columbia coast, brushing the northwest portion of the state of Washington as it does. This low will be too far northward to result in precipitation, but it will bring colder temperatures and elevated winds. While highs on Monday were in the mid 80s, highs today will drop down into the high 70s, and will drop further into the low 70s by Wednesday. A west-east pressure gradient will strengthen across the state, bringing elevated winds to the forecast area, particularly along the Cascade gaps, which look to see wind gusts 15 to 20 mph and localized wind gusts up to 20 to 25 mph. Thursday through Sunday: Another trough will drop down due to a disturbance off the Gulf of Alaska, strengthening off the PNW coast. As it does, higher heights will briefly brush the area as a broad ridge sets up in the central US. Temperatures will briefly rise back into the high 70s, with some isolated 80 degree areas. This will be short lived, as the trough will then move inland with the center of the low positioned over Washington. This will usher in a strong cold front Thursday night into Friday, with widespread precipitation chances for the Inland Northwest. Models have come into better agreement on the chances for precipitation, though now the GFS is the drier model as it shows a weaker low moving inland than the ECMWF, still creating some uncertainty in precipitation amounts. Precipitation will start in the mountain areas on Thursday evening, and then move across the forecast area through Friday morning. It looks to mostly move out of the area by Saturday night, though the ECMWF has a slower moving solution that shows precipitation lingering in the northern mountains and ID Panhandle through Sunday. The GFS has the system moving more quickly out of the area. NBM probabilities show a 30 percent chance or greater of at least 0.10 inches of rain across the entire forecast area through Saturday morning. Areas that will see the highest rainfall include the Cascades, northern mountains, Idaho Panhandle, which look to receive a quarter inch or more of rain and isolated rain totals up to 0.40 inches. Additionally, snow levels look to drop low enough to allow the highest elevations of the Cascades (6000-7000 feet and above) to see a couple inches of snow. Elevations 5000 feet and above will see under an inch of snow. We will keep a close eye on snow levels through the week, as should any travelers or hikers anticipating being in the mountains this weekend. Forcing associated with the incoming low combined with a couple hundred joules of SBCAPE will support chances for thunderstorms Friday afternoon and evening. Much of the forecast area aside from the deeper Columbia basin sees a 10 to 15 percent chance of thunderstorms. PWATs higher than normal at 0.8 inches and above and saturated mid and low level relative humidity values (90% and above) point to isolated heavy rainfall rates being the main thunderstorm threats. Winds will increase with the cold frontal passage Friday afternoon and evening, and have progressively gotten stronger with each model run. The areas that will see the highest wind gusts will be the Waterville Plateau and Columbia Basin areas, where wind gusts 30-35 mph are possible. Elsewhere, particularly across the Wenatchee, Spokane, and Pullman areas, wind gusts 25-30 mph are expected. These wind gusts are 10-15 mph higher than what models had yesterday, and will be closely monitored for any further increases. /AS && .AVIATION... 12Z TAFS: VFR conditions expected with breezy conditions. A weak upper system will bring scattered to broken middle to high clouds, with few to scattered lower clouds in the late morning and afternoon. The wave is expected to be pass with very little opportunity to precipitation, though a stray sprinkle cannot be rule out. Wind will increase in the late morning to early afternoon, then decrease this evening into the overnight. Gusts near 15 to 20 kts are possible. FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence in VFR conditions. High confidence in an increase in winds due to wave passage; moderate confidence in timing. Passing wave is expected to be dry, but there is a small risk that an isolated showers could be generated from 18-03Z, with the potential for an isolated t-storm south of KLWS. Confidence is very low, with less than a 10 percent chance. ----------------------- 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 77 48 72 46 78 51 / 0 0 0 0 0 10 Coeur d`Alene 76 48 70 46 78 52 / 0 0 0 0 0 10 Pullman 73 45 70 45 80 48 / 0 0 0 0 0 10 Lewiston 81 50 76 52 83 56 / 0 10 0 0 0 0 Colville 79 41 72 39 75 44 / 0 0 0 0 0 40 Sandpoint 74 45 68 43 75 49 / 0 0 0 0 0 10 Kellogg 74 47 69 48 80 52 / 0 0 0 0 0 10 Moses Lake 78 45 73 46 76 49 / 0 0 0 0 0 40 Wenatchee 77 51 73 52 73 55 / 0 0 0 0 0 40 Omak 80 47 73 48 73 50 / 0 0 0 0 0 50 && .OTX WATCHES/WARNINGS/ADVISORIES... WA...None. ID...None. && $$

795 FXUS66 KPDT 221057 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 357 AM PDT Tue Sep 22 2026 .KEY MESSAGES... - Breezy gap winds today becoming light through Thursday with near to above normal temperatures each day - Widespread light rain and Cascade peak light snow return Friday with breezy to locally gusty winds in the lower elevations - Trough entering Sunday to continue bringing cooler temperatures throughout the region && .DISCUSSION... Mostly quiet conditions across the region tonight as an upper low passes well to the south of the PacNW. Nighttime satellite imagery does show decks of cirrus draped across the forecast area, with a stratus decks west of the Cascades. At the surface, breezy winds have developed through the Cascade Gaps post a weak frontal passage yesterday. Today through Friday: Through early Thursday, the forecast area will remain under a west to southwest flow aloft, promoting mostly quite conditions and near to above normal temperatures. However, a strong, deep low in the Gulf of Alaska will swing a cold front into the area today, which will reinforce breezy winds (15-25mph with gusts up to 35mph) through the Cascade gaps. Otherwise, a weak shortwave impulse and difluent flow aloft will promote a low chance (10-20%) of shower over elevated terrain from the Elkhorn Crest to the Wallowas this afternoon. There is great agreement amongst ensemble and deterministic guidance that an upper trough in the northeast Pacific will swing into the PacNW with widespread showers late Thursday through Friday. In the lower elevations, surface pressure gradients will tighten Friday in response to a surface low moving inland with the trough axis. This will result in breezy to locally gusty westerly winds (15-30mph with gusts 35-50 mph) developing through the Cascade gaps and into the lower elevations (confidence 65-70%). Temperatures will be on a cooling trend with the trough passage, with afternoon high temperatures in the 60s to low 70s, and 50s in the mountains. Lawhorn/82 Saturday through Monday: As the shortwave begins to move northeast into the Canadian Provinces, there will be a shortwave trough entering from the Pacific into Southern Oregon to Mid/Southern California. Models are in agreement with offshore troughing Saturday morning into midday, but are in disagreement with the position and strength of the exiting trough from earlier in the week. The GFS members show the exiting trough more stronger and more northward. The Canadian and the European members display a stalling and more southward position, with the European being the strongest bringing breezy conditions to the Cascade Gaps Saturday morning(15% Confidence). There is moderate confidence (40% - 50% confidence) that the Offshore trough makes landfall through Sunday, bringing light precipitation along the Cascades. Near normal/ slightly below normal temperatures with moderate confidence (40% - 50% confidence), with mins in the high 40`s and highs in the high 60`s cooling from Saturday into Monday. && .AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/... DLS/PDT/RDM/BDN: VFR conditions to prevail through the period. Winds will increase to 15-20kts with gusts up to 30kts at site DLS this afternoon, then gradually decreasing until becoming light overnight. Sites PDT/RDM/BDN will see winds increase to 10-15kts with gusts to around 23kts developing in the afternoon, becoming light in the evening. Lawhorn/82 YKM/ALW/PSC: VFR conditions are to be present for all sites through the TAF period. Breezy conditions of gusts up to 18KT present at ALW from 16z to 04z. Variable wind directions are to be present at YKM from 21z to 01z and PSC from 07z to 12z. && .Preliminary Point Temps/PoPs... PDT 76 45 74 48 / 0 0 0 0 ALW 77 52 75 53 / 0 0 0 0 PSC 80 48 77 48 / 0 0 0 0 YKM 79 48 74 48 / 0 0 0 0 HRI 78 49 76 48 / 0 0 0 0 ELN 70 43 69 44 / 0 0 0 0 RDM 75 38 73 39 / 0 0 0 0 LGD 79 44 77 47 / 0 0 0 0 GCD 80 44 79 47 / 0 0 0 0 DLS 74 51 77 51 / 0 0 0 0 && .PDT WATCHES/WARNINGS/ADVISORIES... WA...None. OR...None. && $$ DISCUSSION...07/82 AVIATION...07/82

640 FXUS65 KREV 220839 AFDREV Area Forecast Discussion National Weather Service Reno NV 139 AM PDT Tue Sep 22 2026 .KEY MESSAGES... * Showers and an isolated thunderstorm or two are likely in NE CA and northwest NV near the OR border this afternoon. * Warmer and generally dry conditions are expected through Thursday with temperatures 5 to 10 degrees above average. * Still expecting increased winds and cooler temperatures return towards the end of the work week. && .DISCUSSION... The upper level low that was affecting our area yesterday continues its northeastward trajectory towards eastern Idaho. Satellite imagery continues to show cloud cover associated with it over our area early this morning. A couple of showers and potentially an isolated thunderstorm or two could be possible in areas north of I-80, especially over the Surprise Valley, Lassen, northern Washoe and northern Pershing counties late this afternoon and early evening per the HREF and RRFS. Some stray light showers may be possible near the Quad Counties area, and Lake Tahoe, but chances are around 5% or less. As weak ridging develops to our west, our afternoon temperatures will try to increase a degree or two compared to yesterday. So, valley locations will be in the mid-80s, and Sierra communities in the mid-70s. Temperatures will continue to climb up through Thursday with afternoon highs peaking to the upper 80s valleys, and upper 70s for Sierra communities. These temperatures will be 5-10 degrees above average. By Thursday, another upper level trough and its associated cold front in the Northern Pacific starts to swing into the PacNW. This will lead to slightly stronger afternoon winds from the west and southwest as the surface pressure gradient tightens. By Friday, the first wave plunges through the PacNW. This potentially leads to the strongest winds of the week. Deterministic and ensemble models are showing a deeper trough with stronger winds, so the trend is going up. Currently looking at gusts of 30-40 mph Friday afternoon with a 20-60% chance of gusts exceeding 35 mph, especially over wind prone locations along the US-395 corridor. Elevated winds will continue through the weekend as another weaker wave appears to move through the region. However, the winds are not as strong at the moment. The late week and weekend systems appear dry for northern NV and CA... although I wouldn`t be surprised of light rain in areas near the OR border. -HC && .AVIATION... VFR conditions prevail over the next 24 hours. Skies will slowly clear out through the day. KTRK has less than a 10% chance for FG to develop between 11-15Z this morning, better chances tomorrow morning with clearer skies. A 15% of light rain chances remain near KSVE and northward. Winds will be generally from the west and northwest in the afternoon with gusts up to 12 kts. Otherwise, winds will be relatively light and VRB. -HC && .REV Watches/Warnings/Advisories... NV...None. CA...None. && $$

705 FXUS66 KSTO 212017 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 117 PM PDT Mon Sep 21 2026 .KEY MESSAGES... - Periodically breezy winds and warming temperatures, peaking on Thursday with areas of Moderate HeatRisk in the Valley. - Isolated mountain shower and thunderstorm chances (less than 10%) today along the Sierra Crest. - Potential for unsettled weather and increased onshore winds over the weekend as a system passes to our north. && .DISCUSSION... ...Today through Thursday... Scattered clouds continue to move across parts of northern California today, with cooler temperatures and breezy onshore winds. Highs today reach into the low to mid 80s across the Valley, with cooler temperatures at higher terrain. Breezy conditions at times within the Delta and near the Sacramento Metro this evening. Otherwise, a lingering short wave is pushing instability and moisture into the mountains today bringing the slight chance for an isolated shower or storm. Chances are highest along and south of Highway 50 along the Sierra Crest, with lower chances through the southern Cascades. Radar currently has storms developing west of Mono County and south of the forecast area. Main time frame for chances in the Sierra and southern Cascades is around 3-8pm before instability and forcing is lost. Dry conditions are expected on Tuesday with continued cooler conditions. Tuesday morning we could see lower clouds develop in the Bay area and shift into the Sacramento Metro and spread into Yuba City and parts of Stockton. This would lower ceilings and bring a BKN to OVC cloud deck through the morning hours. This wouldn`t last long as after sunrise the clouds will burn off. Conditions will continue to dry out Wednesday through Thursday, with temperatures reaching back into the upper 80s Wednesday and the low to mid 90s on Thursday. Areas of Moderate HeatRisk are possible for parts of the southern Sacramento Valley and into the northern San Joaquin Valley Wednesday and Thursday. The highest chance for Moderate HeatRisk will be on Thursday in the northern San Joaquin Valley. ...The Weekend Ahead... Heading into the weekend our pattern begins to evolve and change across the area. Stronger onshore winds are looking more probable, with cooling temperatures. Confidence remains low, but a system looks to translate across parts of the Pacific northwest bringing increased moisture, instability, and forcing to the area. The development, timing, and the track of the system are in question as guidance struggles to show exactly where we could see precipitation. None the less, we will be watching for the pattern change and any potential for an unsettled weather pattern over the weekend and into early next week. && .AVIATION... VFR conditions are expected through the remainder of today and into tonight. SCT clouds are affecting the Sacramento sites along with SCK and MOD. Around 11-13z marine layer clouds shift into the region bringing BKN to OVC clouds. Confidence is low on if ceilings reach MVFR or remain VFR. As of right now we are looking at 3000 foot ceilings for the Sacramento sites tomorrow morning through the end of the TAF period. Otherwise, winds will be breezy at times this afternoon near the Delta. && .STO WATCHES/WARNINGS/ADVISORIES... None. && $$

550 FXUS65 KMSO 220757 AFDMSO Area Forecast Discussion National Weather Service Missoula MT 157 AM MDT Tue Sep 22 2026 .DISCUSSION... KEY MESSAGES: - Summer-like conditions this week - Chance for showers/thunderstorms in Lemhi County and southwest Montana today - Cold front Friday to bring a change: showers and thunderstorms, gusty winds, then cooler, fall-like conditions this weekend. - Frosty mornings to follow this weekend into early next week. Low pressure spinning over Nevada this morning will track northeast today, sending moisture into Lemhi County and southwest Montana, including Butte, this afternoon and evening. There will be enough moisture and instability to fuel showers and thunderstorms. Wind gusts to 30 mph and lightning will be the main threats. Otherwise, expect fair weather across the Northern Rockies featuring above-normal temperatures, light winds, and clear skies, through Thursday under dry southwesterly flow aloft. On Friday, a cold front will disrupt our recent warm and dry weather. Despite timing differences with the front passage, there is a chance for showers and possibly thunderstorms if we`re able to warm up enough. If we were to get a squall line forming with the front with embedded thunder, then strong gusty winds could be possible impacting recreation on area lakes. On Saturday, it could remain quite breezy across the region, but it will be much cooler with highs in the 60s. Some locations across northwest Montana may remain showery with some cloud cover. These areas could experience temperatures in the 50s until any sun breaks out. Both Saturday and Sunday temperatures will be near to below seasonal levels. With the colder night-time temperatures, frost will again be in the cards. && .AVIATION... High pressure will keep fair weather in the forecast for today. This morning, chances for fog are lingering at KGPI (and, to a lesser extent, KSMN), where dew point depression is about where it was last night with calm winds and clear skies. Duration of fog has been decreasing each morning, so expect that trend to continue this morning. This afternoon, moisture from the southwest will enter into Lemhi County and southwest Montana, brining chances for showers and thunderstorms to KSMN and KBTM. Thunderstorms that do form will be capable of gusty winds of about 25 knots, lightning, and brief heavy rain dropping visibility. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...None. ID...None. && $$

474 FXUS65 KBOI 221130 AFDBOI Area Forecast Discussion National Weather Service Boise ID 530 AM MDT Tue Sep 22 2026 .UPDATE...Updated aviation discussion. && .KEY MESSAGES... - Warm temperatures through Thursday, with values 10 to 15 degrees above normal Thursday. - Chance of showers and thunderstorms Tuesday, mostly across higher terrain of southwest Idaho. - Cooler temperatures heading into this weekend with a chance of precipitation across SE Oregon and portions of SW Idaho Friday. && .SHORT TERM /Through Thursday Night/... Issued 246 AM MDT TUE SEP 22 2026 A cut-off low over California moves towards Montana today, cooling and moistening mid-levels. The destabilization of mid- levels supports the development of showers and thunderstorms this afternoon. On the east side of the low, in Idaho, higher atmospheric moisture will produce more widespread cloud cover inhibiting instability. So while precipitation is likely in S-Central Idaho, the Snake Plain, and Central Idaho mountains: it will likely be a shallower storm mode. Shallow development supports widespread rain showers with weak embedded thunderstorms in this area. Moisture wrapping around the center of the low will move into a less unstable environment in Southeast Oregon, but more sparse cloud cover will still support convective initiation. A more discrete storm mode is expected here, but the limited instability will keep thunderstorms weak. In all areas, the primary hazard with this system will be gusty outflow winds near precipitation. Outflow winds up to 45 mph are possible, alongside lightning, small hail, and brief moderate- heavy rainfall. Precipitation will dissipate around sunset as surface heating ends and the low moves east. The cut-off low transitions to a long wave trough as it rejoins the jet stream positioned north of our area. In turn, this brings the jet slightly further south, putting us in the boundary zone of building heights to our south and warm southwesterly flow directly overhead and to the north. The southwesterly flow strengthens and becomes more southerly through Thursday as a strong longwave trough develops over the West Coast. Thus, temperatures will warm slightly Tuesday into Wednesday, and sharply Wednesday into Thursday making Thursday the hottest day in the 7-day forecast. Temperatures rise to 10-15 degrees above normal on Thursday, with many lower valleys forecast to see maximum temperatures in the low-mid 90s. This forecast has trended upwards the past few days as high- resolution models begin to capture winds on Thursday. Ahead of that building coastal trough, winds in the Snake Plain rise to 15 to 25 mph with wind gusts up to 35 mph. With winds coming out of the southeast, or downslope in the Snake Plain, we could see the temperature forecast continue to trend upwards on Thursday despite increasing clouds ahead of the trough. Elevated fire weather conditions develop due to the combination of strong winds and hot temperatures that afternoon. && .LONG TERM /Friday through Tuesday/... Issued 246 AM MDT TUE SEP 22 2026 Sharply cooling temperatures, gusty winds, and precipitation to the west and north are all slated for later this week and weekend as a strong coastal trough and associated cold front migrate inland. The cold frontal passage itself will occur early Friday afternoon in the latest synoptic model runs, with good agreement even amongst forecast systems and physical/AI cores. Pre- frontal winds gust 25 to 35 mph across the area that morning, winds slightly weaken around sunrise, and then grow even stronger in peak afternoon heating and in the post-frontal environment with gusts up to 30 to 45 mp. Winds remain strong 30 to 40 mph through Friday night in the Snake Plain. For most of the area, the strong frontal winds are the primary forecast concern. Showers along and behind the front will be limited to south- central Oregon, northeastern Oregon, and north-central Idaho. Southwestern Idaho remains drier due to the trough swinging northward while it moves inland. In areas expected to see showers, weak embedded thunderstorms are possible too. Notable rainfall amounts are limited to higher terrain near the Blue Mountains in Oregon and the West-Central Mountains in Idaho, around 0.1 inches through the frontal passage. Forecast amounts could rise if the troughs track moves further south, or if instability increases and showers grow stronger. Temperatures cool about 5-10 degrees as the front moves through on Friday, and about 10-15 degrees Saturday behind the front. Cooler temperatures stick around through the weekend and into early next week as a trailing trough amplifies off the coast. Maximum temperatures Saturday through Tuesday will be around room temperature in lower elevations and in the low 60s to high 50s in higher terrain towns. Some mild northwesterly gustiness is expected to persist through the weekend each afternoon. The trailing trough arrives Sunday evening, looking much weaker than the trough Friday. Precipitation is possible Sunday through Monday in NE Oregon and N-central Idaho again, with 20 to 30 mph gusts possible in the Snake Plain at the same time. Models diverge beyond Tuesday. && .AVIATION /12Z Tuesday through Wednesday/... Issued 526 AM MDT TUE SEP 22 2026 VFR with high clouds today. Isolated showers/thunderstorms this afternoon, mainly over central ID mtns, SE OR highlands, and south-central ID. Storms will generally be embedded in showers, capable of producing gusty winds, lightning, small hail, and moderate rainfall. Surface winds: S-SE 5-10 kt, becoming NW 5-15 kt this afternoon. Outflow gusts near storms 30 to 40 kts possible. Winds aloft at 10kft MSL: Variable 5-10 kt KBOI...VFR with high clouds. Surface winds: generally light SE this morning, becoming 5-10 kt NW this afternoon. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...None. OR...None. && $$ www.weather.gov/Boise Interact with us via social media: www.facebook.com/NWSBoise www.x.com/NWSBoise AVIATION.....JM SHORT TERM...JM LONG TERM....JM

118 FXUS65 KLKN 220900 AFDLKN Area Forecast Discussion National Weather Service Elko NV 200 AM PDT Tue Sep 22 2026 .KEY MESSAGES... * Rain showers and thunderstorms impact central and eastern Nevada Tuesday * Fair weather returns Wednesday though breezes will be present at the end of the week && .DISCUSSION... (Today through next Tuesday) Light isolated to scattered showers, as well as a few thunderstorms will continue tonight into Tuesday as a upper level trough lifts across central and eastern Nevada. However there will be a sharp cutoff in precipitation chances as locations east of a Elko to Grass Valley, to Tonopah line will see a 30% to 70% chance for isolated to scattered showers and thunderstorms with some locations seeing up to 0.40 of precipitation. West of this line will see little in the way of moisture, with just increased cloud cover for Tuesday. The upper trough looks to shift east Wednesday, as the upper pattern over the Silver State becomes weak as a very broad upper level troughing redevelops on the back side of the departing trough, over Nevada and most of central and southern California. This flow setup looks to last through Sunday as a northern stream system looks to reset the SW flow over the Great Basin for Monday ahead of what may be a third upper level trough passing through Nevada Monday and Tuesday. Models differ some what on timing and position, as the GFS keeps the trough faster and shallower pushing the main energy through the Pacific NW and into Wyoming by Monday morning While the ECMWF is slower, stronger and further south moving the trough over southern Nevada through Tuesday morning. Unfortunately, the one main issue that models agree on is that this series of troughs will have almost no moisture to work with, keeping any precipitation out of the picture through next Wednesday at the least. The flip side is that winds will be relatively light for the period with W-SW winds ranging 5 MPH to 15 MPH with gusts up to 25 MPH possible. Temperatures will see a quick warm-up into the mid 80s by Thursday afternoon, before a cooling trend takes over due to a series of cool fronts associated with the upper troughing pattern drops highs back into the .middle 70s. FORECAST CONFIDENCE & DEVIATIONS: There is high confidence in a 30% to 70% chance for isolated to scattered showers and storms Tuesday for central and far eastern Nevada. There is high confidence in a much drier, yet cooler and less windy pattern for Nevada starting Thursday. && .AVIATION... VFR conditions look to be the primary flight conditions through Wednesday morning afternoon. Winds will be variable at speeds of 5KT to 15KT as an upper trough transits central NV, While VCTS will be possible for KTPH, KELY, KENV, and perhaps as far west as KEKO Tuesday afternoon. However KWMC and KBAM look to remain dry for Tuesday into Wednesday. && .FIRE WEATHER... Fire Weather conditions will remain low over the the next week as a series of weak upper level troughs move through the Great Basin region. Tuesday will see a 30% to 70% for isolated to scattered showers and thunderstorms for Fire Zones 425, 426, 427, and 470. Precipitation amounts for locations fortunate to see storms could receive up to 0.40, however most will see between a trace to 0.15 of rain. This first trough exits Wednesday, moisture will become very sparse, even as the upper pattern favors continued troughing over Nevada through next Wednesday. This set-up favor low fire weather conditions trough the period as winds will remain light, and temperature look to warm into the mid 80s through Thursday, with a cooling trend beginning Friday through next Wednesday with highs dropping into the mid 70s. && .LKN Watches/Warnings/Advisories... None. && $$ DISCUSSION...98 AVIATION...98 FIRE WEATHER...98