Area Forecast Discussion
Issued by NWS Salt Lake City, UT
Issued by NWS Salt Lake City, UT
865 FXUS65 KSLC 252034 AFDSLC Area Forecast Discussion National Weather Service Salt Lake City UT 234 PM MDT Wed Sep 25 2024 .SYNOPSIS...High pressure will bring above normal temperatures, relatively light winds, and very low precipitation chances to the Great Basin through at least the next week. && .SHORT TERM (Through 12Z/6AM Friday)...Mid level ridging is centered along the central/southern Rockies this afternoon, with southerly flow upstream across the Great Basin/Colorado Plateau region. This has allowed a very warm airmass to overspread the forecast area, with 700mb temps near 12C allowing afternoon temps to reach 90F at KSLC and mid 90s around St George. A shortwave trough making landfall along the Pacific Northwest coast will lift through the northern Rockies tonight through early Thursday, allowing for slight cooling across northern Utah but otherwise little to no discernible impact on the forecast area. This slight cooling will likely keep KSLC just shy of the daily record of 90F Thursday afternoon. .LONG TERM (After 12Z/6AM Friday)...Mid level ridging will maintain a warm and dry airmass across the region through the upcoming weekend, with max temps running 10-15F above climo. KSLC will challenge the daily record of 91 both Saturday and Sunday. An upper trough traversing the northern Rockies late in the weekend will push a dry frontal boundary through northern Utah, resulting in a cooling trend of roughly 5F from Sunday to Monday, while little change in max temperature is noted across the south. Despite this cooling, max temps will continue to run nearly 10F above climo. && .AVIATION...KSLC...West-northwest winds will persist through 02Z before switching back to southeasterly around 03Z. There is a 20% chance southerly winds redevelop across the airfield during the afternoon hours. VFR conditions will prevail through the TAF period. .REST OF UTAH AND SOUTHWEST WYOMING...Mainly clear skies will be the rule across most of Utah and southwest Wyoming today with terrain driven, diurnal winds. && .FIRE WEATHER...The region will remain under the influence of a broad area of high pressure through the upcoming weekend. This will result in daytime temperatures 10 to 15 degrees above normal, while RH falls into the teens each afternoon. With this warm and dry airmass in place overnight RH recovery will remain marginal. Winds will generally remain terrain driven across most areas each day. A slight cooling trend is expected early next week, however no precipitation is expected through at least the next 7 days. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...None. WY...None. && $$ Seaman For more information from NOAA`s National Weather Service visit... http://weather.gov/saltlakecity