Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 031559

Area Forecast Discussion
National Weather Service Salt Lake City UT
959 AM MDT Mon Aug 3 2020

.SYNOPSIS...The strong high pressure aloft over the Interior West
will bring another day of hot and dry conditions today. A weather
disturbance moving east across the northern Rockies tonight will
bring a dry cold front to the area and drop temperatures back to
more seasonal levels Tuesday.


.DISCUSSION...An elongated mid level ridge axis remains situated
along the US/Mexico border region, keeping monsoonal moisture
suppressed well south across the lower desert of Arizona, while
maintaining a hot and dry airmass across the forecast area. This
will result in one more day of triple digit heat along the Wasatch
Front today.

A shortwave trough currently crossing the Pacific Northwest will
continue eastward across the northern Rockies through tonight,
pushing a shallow, dry cold front southward into northern Utah.
The combination of lower heights as the passing shortwave flattens
the ridge, and weak cold advection associated with the passing
boundary, will knock temperatures down closer to normal for
Tuesday. Going heat headlines through this evening look in good
shape and no updates are planned this morning.


.AVIATION...Southerly winds at KSLC will switch to the northwest
during the 18-19Z timeframe, while VFR conditions prevail through
the TAF period.


UT...Excessive Heat Warning until 9 PM MDT this evening for

     Red Flag Warning until 10 PM MDT this evening for UTZ479-495-496-

     Heat Advisory until 9 PM MDT this evening for UTZ003>005-012>016.




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