Area Forecast Discussion
Issued by NWS Salt Lake City, UT
Issued by NWS Salt Lake City, UT
229 FXUS65 KSLC 191105 AFDSLC Area Forecast Discussion National Weather Service Salt Lake City UT 405 AM MST Wed Nov 19 2025 .SYNOPSIS... Valley rain and mountain snow is currently ongoing across southern UT and will persist through Thursday evening. Across northern UT, light valley rain and mountain snow is expected to develop today and persist through at least Friday morning with minimal accumulations. A dry period settles in this weekend lasting through at least mid-week. && .DISCUSSION...Key Points: - Valley rainfall and mountain snowfall will continue across southern UT through Friday, slowly tapering off throughout the duration. - Chances for light valley rain and high elevation snow showers persist across northern UT through Friday. - A dry pattern develops Friday afternoon and will persist through the weekend. Currently, an upper low is progressing inland across Southern California and is forecast to continue pushing east with time. Diffluent southerly flow aloft will persist across UT providing just enough ascent for multiple rounds of valley rain showers and snow showers across southern UT. Additionally, this will lead to the development of light valley rain showers and high elevation snow showers across northern UT through Friday, though coverage will be isolated in nature. Colder air aloft is expected to roll in across southern UT today, dropping snow levels to around 7500ft this afternoon enabling some slightly lower elevations to tap into some light accumulating snow. Otherwise, additional snow accumulations range from 6-12" across the Pine Valley Mountains, Brian Head, and Boulder Mountain through late this evening. As such, the Winter Weather Advisory has been extended through this afternoon for our southern UT mountains. As this upper low slides east, another cutoff low is expected to dive down the CA coastline and push through Southern CA into AZ. However, this time it will remain even further south than the most recent storm. Some upper diffluence is expected to spread across southern UT providing modest ascent resulting in a continuation of scattered showers through Friday. As the low continues east, dry easterly flow aloft will keep conditions calm and mild through the remainder of the weekend. Ridging builds in over the southwestern U.S. following the departure of the upper low with persistent westerly flow aloft. The bulk of ensemble guidance supports this ridge holding on through at least midweek keeping us cool and dry. An active northern stream pattern persists to our north with a dry cold front pushing through the area on Tuesday. Outside of lowering temperatures to seasonal norms by midweek, not much else appears to come from this feature at this time. && .AVIATION...KSLC...The SLC terminal will see VFR conditions throughout the day, with cigs dropping to near 6000 feet AGL during the mid to late afternoon. Southerly winds are expected to shift to the northwest between 19Z and 21Z. .REST OF UTAH AND SOUTHWEST WYOMING...VFR conditions will prevail across the majority of the airspace throughout the day with generally light and terrain driven winds. Periods of rain with snow above about 8,000 feet will continue over southern Utah today. Those areas above 8,000 feet will see periods of IFR/MVFR conditions in snow, with the threat decreasing during the evening and overnight hours. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...Winter Weather Advisory until 5 PM MST this afternoon for UTZ125. WY...None. && $$ PUBLIC...Worster AVIATION...Traphagan For more information from NOAA`s National Weather Service visit... http://weather.gov/saltlakecity