Area Forecast Discussion
Issued by NWS Salt Lake City, UT
Issued by NWS Salt Lake City, UT
284 FXUS65 KSLC 060821 AFDSLC Area Forecast Discussion National Weather Service Salt Lake City UT 221 AM MDT Sun Jul 6 2025 .SYNOPSIS...Building high pressure will bring dry conditions and increasingly hot temperatures through midweek. A weakening trough will bring temperatures back to near normal by Thursday, with unseasonably hot temperatures returning by the upcoming weekend. && .DISCUSSION...High pressure is centered over the Desert Southwest this morning with a closed low off the California coast. The low has a dry slot out ahead of it, with light southwest flow continue to advect that dry air into Utah and southwest Wyoming. As a result, seeing mostly clear and tranquil conditions over the area. Conditions today will be similar to yesterday with temperatures near seasonal normals. Given some weak shortwave energy, there is a low chance of a few afternoon showers over the Uintas, with little more than some cumulus anticipated elsewhere. The ridge is expected to expand and amplify through Tuesday, putting an increasingly hot airmass over the forecast area. As a result, will see temperatures steadily warm over the next few days, averaging 10F above seasonal normals by Tuesday afternoon. This will put 100F highs in play for portions of the Wasatch Front, including the Salt Lake Valley, with temperatures approaching 110F in St. George. The Pacific low will track slowly toward the California coast during this time, resulting in some pockets of breezy winds, primarily over western Utah, that could increase fire danger. The low is expected to weaken rapidly as it moves across the Great Basin and through northern Utah Tuesday night into Wednesday. Associated moisture with the system will be limited at best and the primary impact will be to bring temperatures back to near normal for this time of year by Thursday. However, models are in unusually good agreement that the ridge will rebound thereafter, bringing a return to the unseasonably hot temperatures by the upcoming weekend. && .AVIATION...KSLC...VFR conditions will prevail through the period. With a northerly gradient, light drainage winds turn northwesterly by 16Z. .REST OF UTAH AND SOUTHWEST WYOMING...High pressure will bring VFR conditions and light winds at all terminals across the region. && .FIRE WEATHER...High pressure over the Desert Southwest will build over Utah for the first half of the week, resulting in dry and increasingly hot conditions. High temperatures are expected to run up to 10F above seasonal normals by Wednesday. Winds are expected to remain generally light, but as a Pacific trough edges toward the California coast Tuesday into Wednesday, there is a chance of winds becoming strong enough in some areas to produce isolated critical fire weather conditions, primarily over western Utah. That trough is expected to cross the area Wednesday into Thursday as it weakens, producing little in the way of impacts. The hot and dry conditions will then continue for the latter half of the upcoming week. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...None. WY...None. && $$ PUBLIC/FIRE WEATHER...Traphagan AVIATION...Seaman For more information from NOAA`s National Weather Service visit... http://weather.gov/saltlakecity