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Displaying AFOS PIL: AFDSLC Received: 2020-09-22 03:51 UTC

660 FXUS65 KSLC 220351 AFDSLC Area Forecast Discussion National Weather Service Salt Lake City UT 951 PM MDT Mon Sep 21 2020 .SYNOPSIS...A mild southwesterly flow will maintain above normal temperatures through much of the week. A limited amount of moisture will bring a threat for showers and thunderstorms through Tuesday, mainly across areas east of I-15. && .DISCUSSION...Utah remains under warm southwesterly flow aloft this evening as an upstream trough makes its way onto the NorCal and PacNW coasts. Midlevel moisture continues to spread northward into Utah in conjunction with a weak vort max lifting across Utah. This has allowed some generally weak convection to develop over southern Utah this afternoon, with some of this now spreading into central Utah. Given some weak forcing associated with said vort max, some showers will continue through the night. Showers and thunderstorms will increase tomorrow as the upstream trough ripples across northern Utah, and given the increasing trend in moisture, expect greater coverage and somewhat stronger storms. Light measurable rain was reported across portions of southern Utah today, and expect measurable rain to be a possibility once again tomorrow. High pressure will build back into the area Wednesday into Thursday, resulting in a drying trend. A trough grazing northern Utah towards the end of the week is still expected to push a dry cold front through Utah on Friday. Updated the forecast mainly to adjust PoP/Sky for the rest of the night based on latest observational and forecast trends. && .AVIATION...VFR conditions are expected at the SLC terminal through the night under increasing mid/high clouds. Southeast winds will prevail through at least early tomorrow afternoon, increasing in speed during the mid to late morning hours. && && .SLC WATCHES/WARNINGS/ADVISORIES... UT...None. WY...None. && $$ Cheng For more information from NOAA's National Weather Service visit... http://weather.gov/saltlakecity For frequently asked questions about the Area Forecast Discussion visit... http://weather.gov/saltlakecity/general/afd_faqs.php