Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 251551

Area Forecast Discussion
National Weather Service Salt Lake City UT
951 AM MDT Sun Jun 25 2017

.SYNOPSIS...High pressure will settle across Utah today. Moisture
will start to increase from the southwest today through Monday. A
cooling trend will begin on Tuesday and continue into Thursday
before high pressure returns for the end of the week.


.DISCUSSION...Morning satellite imagery and objective analysis
show a mid level ridge centered across the Desert Southwest, with
the ridge axis extending northwestward across the Great Basin. The
forecast area remains downstream from this axis, within a
generally light northwesterly flow aloft. Mid level moisture which
has embedded itself within this ridge axis will bring a threat for
isolated high based convection this afternoon across the higher
terrain of southern Utah while the north remains dry and stable.

An upper low spinning off the California coast is forecast to lift
northeastward into the Pacific Northwest/northern Great Basin
Monday through Monday night, which will help re-orient the ridge
axis further eastward, and allow for a mean southwesterly flow
aloft across the forecast area. This will result in a warming
trend across the north while max temps in the south remain fairly
steady. Additionally, may see convection develop across northeast
NV Monday afternoon and spread into northwest Utah during the
evening as this wave.

Going forecast looks in good shape, and no updates are planned at
this time.


.AVIATION...Light surface winds at KSLC are expected to increase a
bit from the northwest through the day today. VFR conditions will
prevail through the TAF period.


UT...Red Flag Warning from noon to 10 PM MDT Monday for UTZ492-493-

     Excessive Heat Warning until 10 PM MDT this evening for UTZ019.




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