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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Grand Junction CO
540 AM MDT Mon May 17 2021

Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-
Upper Gunnison River Valley-Uncompahgre Plateau and Dallas Divide-
Northwest San Juan Mountains-Southwest San Juan Mountains-
Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
540 AM MDT Mon May 17 2021

This hazardous weather outlook is for eastern Utah and western

.DAY ONE...Today and Tonight

Thunderstorm development will be possible over a large portion of
western Colorado today and portions of northeast Utah. Gusty
outflow winds...and small hail will be the main
threats...especially over the central mountains and adjacent
valleys. Snowfall is likely to fall above timberline in the
Colorado mountains tonight. Snow levels may temporarily drop to
near or below pass level...but significant road accumulations are
not anticipated.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

This slow moving storm system will bring periods of rainfall to
the Colorado mountains on Tuesday...with snow expected in the
morning in the highest elevations. Thunderstorm development can be
expected over much of the area by the afternoon with gusty outflow
winds and small hail the main threats. Afternoon thunderstorm
development will be possible over portions of the eastern Utah and
western Colorado through the remainder of the week.


Spotter activation will not be needed.


Special Weather Statement

Special Weather Statement
National Weather Service Grand Junction CO
1253 PM MDT Mon May 17 2021

Upper Gunnison River Valley CO-West Elk and Sawatch Mountains CO-
1253 PM MDT Mon May 17 2021


At 1252 PM MDT, Doppler radar was tracking a strong thunderstorm near
Gunnison, moving northwest at 5 mph.

Pea to 1/2 inch size hail may accumulate along Route 135. Winds in
excess of 30 mph will be possible with this storm.

Locations impacted include...
Gunnison and Almont.

This includes the following highways...
 U.S. Highway 50 in Colorado between mile markers 156 and 165.
 Colorado 135 between mile markers 1 and 24.


Heavy rainfall is also occurring with this storm, and may lead to
localized flooding. Do not drive your vehicle through flooded

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.


LAT...LON 3862 10670 3848 10682 3859 10713 3877 10708
      3886 10691
TIME...MOT...LOC 1852Z 113DEG 5KT 3860 10685



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