Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 181552

Area Forecast Discussion
National Weather Service Salt Lake City UT
952 AM MDT Tue Oct 18 2016

.SYNOPSIS...One last storm system will cross northern Utah and
southwest Wyoming today before high pressure returns for the
latter half of the week.


.DISCUSSION...Clouds increasing over northwest Utah this morning
as the last in a series of storm systems approaches. This system
will cross northern Utah and southwest Wyoming this afternoon
through this evening, bringing a final round of precip and a
reinforcing shot of cooler air. 700 mb temps as low as -5C would
drop snow levels to 6500-7000 feet over far northern Utah. Guidance
has trended a bit weaker and slower with this system since
yesterday with a farther north track. With this in mind, have
decreased the southern extent of the POPs this afternoon and
slowed down the introduction of POPs this morning. No additional
updates planned.

High pressure is on track to move in behind the exiting storm
system for Wednesday, remaining in place for the rest of the week.
Rapid clearing will allow temperatures to cool significantly
Wednesday night, bringing hard freeze conditions down to some
colder valleys. The ridge will keep dry conditions in place with a
gradual warming trend in temperatures through the weekend.


.AVIATION...Southerly winds will prevail at the SLC terminal
through about 19Z then switch to northwesterly with a cold front.
There is a 40 percent chance the winds will not shift until
20-21Z. Scattered showers will develop behind the front with
occasional cigs near BKN070 thru about 04-06z. There is only a 30
percent chance that cigs will drop below 7000 ft.





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