Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 211651

Area Forecast Discussion
National Weather Service Salt Lake City UT
951 AM MST Tue Feb 21 2017

.SYNOPSIS...A mild and strong southwest flow will prevail today.
A cold front tonight will usher in a period of cold unsettled
weather lasting through the end of the week.


.DISCUSSION...Moisture is being eroded away as an area of high PW
begins to shift south and east today with the cold front moving in
from the northwest later. Gusty winds will continue through the
day until the frontal passage, expected late this afternoon into
early evening across northern- northwest Utah. Warm low
temperatures seen this morning across many Valley locations,
including the Salt Lake City airport which saw a low of 51F, were
realized from the southerly winds overnight. The front looks to be
quite convective and progressive in nature trekking southeastward
through Wednesday evening. Going headlines are in good shape and
will assess the duration and/or extension of the winter weather
advisory with the afternoon package.

The upper level low swinging on shore of northern California early
Wednesday enters into northern Utah Wednesday, driving another
round of precip to light up across the northern and central
mountains late Wednesday into Thursday and likely impacting the
entire corridor from Cedar City through Weber County.

Made minor tweaks to current forecast for current trends, but
otherwise going package is in good shape.


.AVIATION...VFR conditions are expected at the SLC terminal through
the afternoon, with clouds increasing ahead of an approaching cold
front. Cigs are expected to drop to or below 6000 feet AGL in rain
during the late afternoon/early 02Z. Gusty southerly
winds will continue through the afternoon, with gusts in the 30-40
mph range. Winds are expected to shift to the northwest by 02Z with
the passage of a cold front.


UT...Wind Advisory until 9 PM MST this evening for UTZ003-005-015-016.

     Winter Weather Advisory from 2 PM this afternoon to 11 AM MST
     Wednesday for UTZ007>009.




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