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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Salt Lake City UT
552 AM MDT Wed Mar 21 2018

Cache Valley/Utah Portion-Northern Wasatch Front-
Salt Lake and Tooele Valleys-Southern Wasatch Front-
Great Salt Lake Desert and Mountains-Wasatch Mountain Valleys-
Wasatch Mountains I-80 North-Wasatch Mountains South of I-80-
Western Uinta Mountains-Wasatch Plateau/Book Cliffs-
Western Uinta Basin-Castle Country-San Rafael Swell-
Sanpete/Sevier Valleys-West Central Utah-Southwest Utah-
Utahs Dixie and Zion National Park-South Central Utah-
Glen Canyon Recreation Area/Lake Powell-Central Mountains-
Southern Mountains-Southwest Wyoming-
552 AM MDT Wed Mar 21 2018

This Hazardous Weather Outlook is for the western two thirds of
Utah and southwest Wyoming.

.DAY ONE...Today and Tonight

A couple of weak weather disturbances will bring light valley rain
and mountain snow to northern Utah and southwest Wyoming today.
Across southern and central Utah mainly isolated mountain showers
will be the extent of any precipitation today.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

A cold front advancing toward the outlook area through Nevada
along with increasing southwest flow aloft will lead to strong
southerly winds across western Utah Thursday. Hazardous travel
conditions are expected due to the strong winds.

An exceptionally moist air mass will work into the area from the
southwest for Thursday and Friday. Widespread valley rain and high
elevation snow will develop by Thursday afternoon, and continue
through early Friday. Significant accumulations of snow are
possible across the northern mountains. Valley locations will
see substantial amounts of rain, particularly across northern Utah
and extreme southwest Utah. Rivers across southwest Utah will
experience significant rises, with flood prone areas such as slot
canyons possibly seeing flash flooding.

After a generally dry Friday afternoon and night, The main storm
system off the Pacific Northwest coast will turn east and impact
the northern half of the outlook area over the weekend. The colder
air associated with this feature will bring lower snow levels to
the north, with a few of the higher valleys and mountains
receiving accumulating snows. Precipitation will shift south into
southern and central Utah early next week.


Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.


For more information from NOAA/s National Weather Service visit...

For information on potential road travel impacts visit...

U.S. Dept. of Commerce
NOAA National Weather Service
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Silver Spring, MD 20910
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