Area Forecast Discussion
Issued by NWS Salt Lake City, UT
Issued by NWS Salt Lake City, UT
324 FXUS65 KSLC 091048 AFDSLC Area Forecast Discussion National Weather Service Salt Lake City UT 348 AM MST Sun Nov 9 2025 .SYNOPSIS...High pressure will bring mostly clear, dry, and warmer than normal conditions much of the week. Details with a storm around Thursday, Friday, and into the weekend are of lower confidence, but models are in agreement that a storm system will track into the western U.S. Wednesday into Thursday. && .SHORT TERM (Through 12Z/5AM Tuesday)... Key Points: - Dry, warmer than normal conditions will last through Wednesday. - Confidence is increasing (80% likelihood) that a potent upper trough will bring cooler temperatures and potentially widespread precipitation across the forecast area into the weekend. High pressure near the California coast will bring stable northwest flow to southwest Wyoming and Utah through Sunday. There is upper moisture in the northwest flow, so there will be high clouds, particularly further north. Valley high temperatures will generally be in the mid and upper 50s. Valley low temperatures will be in the 30s for much of Utah into Monday. The ridge will track inland, which will add 1-5F to high temperatures. Dry, warmer than normal conditions will continue Tuesday. .LONG TERM (After 12Z/5AM Tuesday)...A longwave ridge will remain across the region through Wednesday maintaining a dry and stable airmass with above normal temperatures. A mid November sun angle with weak flow will limit boundary layer mixing, however daytime temperatures will run around 10F above climo across the forecast area Tuesday and Wednesday. 00Z ensemble guidance is coalescing around a common solution of an upper trough spreading into the Intermountain region during the latter portion of the week, bringing widespread precipitation and much cooler temperatures across the forecast area later Thursday night through at least Friday. Roughly 90% of EPS, GEFS and GEM members support this longwave trough impacting the region during this timeframe. Details regarding the evolution of this trough still need to be ironed out which will impact where the heaviest precipitation occurs, but the mean 24 hour QPF through Friday afternoon supports nearly .25" of water across most valleys statewide, and a conservative .50" or more with accumulating snowfall across the higher terrain. Preceding the trough, enhanced southwesterly flow looks to bring windy to locally very windy conditions Thursday across the western valleys. && .AVIATION...KSLC...Light southeast winds will transition to northwest around 18Z with few to scattered high clouds through the TAF period. .REST OF UTAH AND SOUTHWEST WYOMING...Winds will be light and sometimes variable throughout southwest Wyoming and Utah with few to scattered high clouds through the TAF period. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...None. WY...None. && $$ SHORT TERM...Wilson LONG TERM...Seaman AVIATION...Wilson For more information from NOAA`s National Weather Service visit... http://weather.gov/saltlakecity