Area Forecast Discussion
Issued by NWS Salt Lake City, UT
Issued by NWS Salt Lake City, UT
425 FXUS65 KSLC 250853 AFDSLC Area Forecast Discussion National Weather Service Salt Lake City UT 253 AM 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)...Satellite imagery early this morning shows a ridge axis centered over UT/WY/CO, with mid- level southerly flow along the upstream side of the ridge beginning to move into our area. A longwave trough currently over the northeast Pacific will act to weaken this ridge, nudging it slightly more eastward today and tomorrow. The weather across Utah and southwest Wyoming, however, will remain quiet with no noticeable impact from this system. Under high pressure, temperatures will hover around 10 to 15 degrees above normal, with clear skies expected yet again. .LONG TERM (After 12Z/6AM Friday)...It may seem like a broken record, but an extended period of upper level ridging continues to be expected through the long term forecast period. By next Wednesday into Thursday, at least a third of the ensemble members attempt to bring a deeper trough into the western United States while a similar number continue to indicate pronounced ridging. Something to keep monitoring...but expect to see above normal temperatures and below normal precipitation through the next seven days. && .AVIATION...KSLC...Light southeasterly drainage winds will continue through the morning hours at SLC, with a switch to the northwest expected between 1930-2030Z. .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...A ridge of high pressure centered roughly overhead will produce mild and dry conditions through the next 7 days, with only minor fluctuations in its position. This high pressure will nudge eastward today, producing slightly increased southwesterly flow and warmer temperatures. Otherwise, winds are likely to remain terrain-driven. RH trends will remain more or less unchanged, with minimum RH reaching 10-15% across most valleys. Overnight recoveries will be marginal to poor in most areas. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...None. WY...None. && $$ Cunningham/Kruse For more information from NOAA`s National Weather Service visit... http://weather.gov/saltlakecity