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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Salt Lake City UT
610 AM MDT Thu Mar 22 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-
610 AM MDT Thu Mar 22 2018

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

.DAY ONE...Today and Tonight

Very strong southerly winds will exist across western Utah ahead
of an approaching cold front through this evening. Gusts
approaching 60 mph are possible across western Utah beginning
late this morning and continuing through the first half of this

Scattered light showers across northern Utah and southwest
Wyoming this morning will expand across the north during the day.
Most of the precipitation will focus on the higher terrain today.
Valley rain and mountain snow will increase across the northern
portion of the outlook along a cold front moving slowly east
across the area tonight. Significant amounts of rain are possible
across the valleys of northwest Utah, with several inches of snow
accumulating at the adjacent higher elevations overnight.

Across southern Utah light rain will develop across southwest Utah
later this morning, then becoming widespread and locally heavy
across the southern third of the state this afternoon through the
overnight hours. Snow will exist at the highest elevations of the
southern mountains. Accumulating snows are expected, though
mainly above 9000 feet.

Areas rivers in southern Utah will see significant rises due to
the expected moderate to heavy rainfall. River flooding is not
expected at this time. Flash flood prone areas of southern Utah
could see localized flash flooding late this afternoon through the
overnight hours.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Moderate to locally heavy valley rain and mountain snow will
continue along the cold front over northern Utah early Friday.
Widespread showers will also continue across southern Utah, with
the heaviest precipitation heading into the Lake Powell area
during the morning. The areal extent of precipitation will
decrease during the day with only a few light showers remaining
by early Friday evening.

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, then
end across the entire outlook area by Wednesday.


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


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High Wind Warning

National Weather Service Salt Lake City UT
318 PM MDT Thu Mar 22 2018

Salt Lake and Tooele Valleys-Great Salt Lake Desert and Mountains-
West Central Utah-Southwest Utah-
Including the cities of Salt Lake City, Tooele, Wendover,
Snowville, Delta, Fillmore, Beaver, Cedar City, and Milford
318 PM MDT Thu Mar 22 2018


* AFFECTED AREA...The Salt Lake and Tooele Valleys along with the
  Great Salt Lake Desert and Mountains, west central and southwest

* WINDS...South winds 30 to 40 mph with gusts approaching 60 mph.

* TIMING...Strong gusty winds will continue through the remainder
  of the afternoon before decreasing a bit this evening.

* IMPACTS...Significant crosswinds are expected to impact travel
  along east to west oriented routes including I-80 and US-6.
  High profile and lightweight vehicles will be most susceptible
  to these strong winds. Isolated areas of blowing dust are
  possible, which could reduce visibilities to under 1 mile at


A High Wind Warning means a hazardous high wind event is expected
or is occurring. Sustained wind speeds of at least 40 mph or
gusts of 58 mph or more can lead to property damage. Vehicles,
especially high profile vehicles, can be difficult to control at
times in high winds. Motorists should take extra caution,
especially while crossing bridges, overpasses, and unsheltered



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