Area Forecast Discussion
Issued by NWS Salt Lake City, UT
Issued by NWS Salt Lake City, UT
138 FXUS65 KSLC 060953 AFDSLC Area Forecast Discussion National Weather Service Salt Lake City UT 353 AM MDT Sun Apr 6 2025 .SYNOPSIS...High pressure will maintain a warming trend through Monday. A Pacific Northwest storm system will graze northern Utah late Monday, temporarily curbing the warming trend. High pressure will bring a return to the warming trend for the latter part of the upcoming week. && .SHORT TERM (Through 12Z/6AM Tuesday)...High pressure is centered over the Great Basin this morning, putting Utah and southwest Wyoming in a dry north to northwest flow aloft. Skies are clear across the area except for a few high clouds, and the mostly clear conditions will continue throughout the day. Temperatures will continue their warming trend, with maxes running near to a few degrees above seasonal normals. By Monday, a trough will start to make its way onshore along the Pacific Northwest coast. This will shift the ridge eastward, with the axis moving overhead early Monday and east of the area by late Monday afternoon. The position of the ridge will accelerate the warming trend, with maxes averaging 10F above seasonal normals in increasing southwest flow. .LONG TERM (After 12Z/6AM Tuesday)...A brief pause in the warming trend is expected on Tuesday across northern Utah and southwest Wyoming as a shortwave trough brushes the northern portion of the forecast area. Temperatures across the aforementioned area will trend a few degrees cooler on Tuesday, with slight (15-20%) chances for light precipitation mainly for areas near the ID border. Otherwise, conditions will be largely unchanged across the central and southern portions of the forecast area. Ensembles continue to strongly support an amplifying ridge across the western US mid-to-late week, resulting in a considerable warmup across the region through Friday. Temperatures will trend upwards of 15-20 degrees above average areawide by Thursday, with most valley locations seeing temperatures in the upper-70s to low-80s, and lower Washington county likely breaking the 90 degree mark. As we haven`t yet broken the 80 degree mark in Salt Lake City yet this year, our attention turns to Friday for the best potential to break this milestone. Current guidance suggests a 70% chance for the high temperature at KSLC to meet or exceed 80 degrees. There is more variability in the forecast as we head into next weekend. Ensemble clusters show a troughing pattern returning to the area for the end of next weekend, though at what magnitude remains the big question at this point. Regardless, the signal for some flavor of cooler and potentially more active weather remains late in the forecast period. && .AVIATION...KSLC...VFR conditions prevail through the TAF period as clear skies continue under building high pressure. Southeasterly winds shift northwest after roughly 18z, remaining generally light. .REST OF UTAH AND SOUTHWEST WYOMING...Mostly clear skies and dry conditions support continued VFR conditions across the airspace as high pressure builds across the region. Generally light and terrain driven winds prevail through the period, except for breezy northwesterly winds across southern portions of the forecast area this afternoon and evening. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...None. WY...None. && $$ SHORT TERM...Traphagan LONG TERM/AVIATION...Whitlam For more information from NOAA`s National Weather Service visit... http://weather.gov/saltlakecity