Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 191533
AFDSLC

Area Forecast Discussion
National Weather Service Salt Lake City UT
933 AM MDT Sun Mar 19 2017

.SYNOPSIS...A very mild southwest flow will continue early this
week. A more active pattern is expected to develop by mid week.

&&

.DISCUSSION...Weak cold front moved southward across northern Utah
overnight and has dissipated around the Juab-Utah county line.
The thickness of the cold air pool is about 4000 ft AGL at SLC so
not expecting it completely get eroded away today despite 700 mb
winds about 30 kts from the southwest. The 850 mb temps are
forecast to be about 3-5 degrees C cooler late this afternoon
than they were yesterday afternoon across northern portions of the
area. Consequently, have lower temps across the northern third of
the CWA by 6-9 degrees from yesterday`s highs or about 3-6 degrees
from the earlier morning forecast.

Also, models have backed off on the cooling at 500 mb across
northern Utah this afternoon and the threat of any showers over
northern mountains is minimal at best. Have lowered or removed
PoPs for this afternoon except extreme northwest corner of Utah.

Winds at 700 mb over western Utah are similar or a little weaker
than they were yesterday but the surface pressure gradient is
quite a bit weaker over southwest and west central Utah while over
northwest Utah there will be an opposing surface gradient from
north to south. Therefore have backed off considerably on the
southerly wind forecast for this afternoon and evening over many
areas of western Utah.

Sky conditions are expected to be quite similar to yesterday with
varying amounts of high clouds, so partly sunny or partly cloudy
forecast should be right on the mark.

&&

.AVIATION...The SLC terminal will see VFR conditions throughout the
day with some high clouds. Light winds are expected to become
prevailing northwesterly by 18Z.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...None.
WY...None.
&&

$$

PUBLIC...Struthwolf
AVIATION...Traphagan

For more information from NOAA`s National Weather Service visit...
http://weather.gov/saltlakecity

For frequently asked questions about the Area Forecast Discussion
visit...
http://weather.gov/saltlakecity/general/afd_faqs.php



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