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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Salt Lake City UT
618 AM MDT Thu Apr 27 2017

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-
618 AM MDT Thu Apr 27 2017

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

.DAY ONE...Today and Tonight

The cold and unstable northwest flow aloft across the outlook area
will maintain scattered rain and snow showers through early this
evening. The heaviest snow showers will concentrate across the
higher terrain of northern and central Utah, with accumulating
snows expected.

Valley locations up north could see a mix of rain and snow in
heavier showers. Any minor accumulations would be confined to the
bench areas, and then mainly to grassy surfaces.

Temperatures will remain well below late April norms. High
temperatures today will run 5 to 15 degrees below normal across
the outlook area. These temperatures may feel even colder as
northwest winds will increase across most of the area today.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A colder storm system will strengthen as it settle south through
the eastern Great Basin Friday. Snow, or rain and snow mixed, will
concentrate north and west of the storm, and will extend from
southwest Wyoming south into southern Utah. Temperatures will
remain on the cold side, with readings running a few degrees
colder than Thursday`s highs.

The storm system will exit the region Friday night. Clearing skies
and decreasing winds could lead to very cold temperatures across
western Utah late Friday night through early Saturday morning. A
hard freeze could develop in the agricultural areas of northern
and western Utah.

Strong high pressure aloft to the west of Utah beginning Sunday
will bring somewhat drier and warmer conditions to the outlook
area heading into early next week. This warming trend will
accelerate midweek as the high pressure shifts east into the Great


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


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