Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 261548

Area Forecast Discussion
National Weather Service Salt Lake City UT
948 AM MDT Sun Mar 26 2017

.SYNOPSIS...High pressure will return briefly today, followed by
another storm system for Monday and Tuesday.


.DISCUSSION...A short wave ridge is advancing across the Great
Basin this morning downstream from the next Pac trof that is now
starting to move ashore. A cool nwly flow is over the CWA with a
little lingering low level moisture over the mtns and w in the
form of patchy stratus and fog.

Expect the fog and stratus to burn off by noon but the upstream
ridge axis will also be crossing the CWA about that time allowing
thick higher clouds to overspread the area thru the aftn.

Warm advection lift starts tonight with a threat of spotty light
precip developing over the nrn CWA towards sunrise. The precip
fills in across the wrn 2/3 CWA thru the morning as a cold front
enters the state. It persists thru the aftn and spreads into the
east with the front. The airmass gets cold enough to lower snow
levels to around 6000 ft altho they could get locally lower in
heavier precip. Once again, it appears the impact of snow on
travel over mtn passes will be limited by the fact that the
airmass is not all that cold and increasing sun angle allowing
solar heating to filter thru the clouds keeping road surfaces
warmer than the air. This could change after sunset as the airmass
continues to cool overnight and precip could linger as well.

Precip should taper off by Tue eve as the system moves off to the
east and short wave ridging builds in from the west.

No updates planned at this time.


.AVIATION...Winds at the SLC terminal are expected to shift from
southeast to northwest around 21-22Z then switch back to southeast
between 02-03Z. However, there is a 20 percent chance that winds
will remain southeast throughout the TAF period. Cigs are expected
to lower this evening but remain above 7K FT AGL until 12-14Z.





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