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FXUS65 KSLC 250227
AFDSLC

Area Forecast Discussion
National Weather Service Salt Lake City UT
827 PM MDT Sat Aug 24 2019

.SYNOPSIS...
A dry west to northwest flow today will maintain temperature near
to slightly above normal. A couple of weather disturbances moving
through the northern Rockies late Saturday night through Sunday
will nudge a dry front across northern and central Utah Sunday.
Cooler temperatures will follow the front to begin the new week.

&&

.DISCUSSION...
Going forecast in good shape, with dry northwest flow prevailing.
Updated to freshen up the forecast with latest observational and
model data.

&&

.PREVIOUS DISCUSSION...
An elongated mid level ridge axis extending from the eastern
Pacific into the Great Basin will maintain a dry west northwest
flow over the forecast area through early in the upcoming week. A
shortwave trough embedded within this northwesterly flow will push
a cooler airmass into northern Utah Sunday, which will linger
into early in the upcoming week. Otherwise a dry and stable
airmass will remain in place across central and southern Utah
through Tuesday. By Wednesday the models suggest this ridge axis
will begin to shift eastward allowing a modest amount of moisture
to spread northward into southern and perhaps central Utah,
allowing for an increased threat of convection primarily across
the terrain.

&&

.AVIATION...
Southeast drainage winds have developed at the KSLC terminal and
will persist overnight. Around sunrise southerly winds are
expected to increase with a significant wind switch to the
Northwest early Sunday afternoon. VFR conditions will prevail
throughout the TAF period.

&&

.FIRE WEATHER...
High pressure centered to the west of the area will maintain a
dry northwest flow through the first half of the upcoming week.
Breezy northwest winds at the surface coupled with low humidity
values will result in critical fire weather conditions across the
northern third of Utah Sunday. Further south winds are expected to
remain lighter and as a result cancelled the Fire Weather Watch
for central and southwest Utah while upgrading the Watch to a Red
Flag Warning for northwest Utah. Winds are expected to relax a bit
Sunday as this ridge moves east. Moisture may begin to slowly
move northward into the area by the middle of the upcoming week
bringing an increase in shower and thunderstorm coverage.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...Red Flag Warning from 11 AM to 10 PM MDT Sunday for UTZ478>484-
488-489.

WY...&&

$$

PUBLIC...10/Seaman
AVIATION...10
FIRE WEATHER...Seaman

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