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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Grand Junction CO
430 AM MDT Sat Apr 20 2019

COZ001>014-017>023-UTZ022>025-027>029-211030-
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-
430 AM MDT Sat Apr 20 2019

This hazardous weather outlook is for eastern Utah and western
Colorado.

.DAY ONE...Today and Tonight

Isolated to scattered thunderstorms will develop over the southern
and central Colorado mountains this afternoon and are expected to
persist into early evening. Showers/thunderstorms will create
strong gusty outflow winds with light rain. Areas of light snow
accumulations are possible above 10,000 feet. This activity will
be driven a weak disturbance moving northeastward across the
region during the afternoon.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

A second disturbance is expected to impact the region Sunday and
Monday with remnants lingering into Tuesday of next week. This
system will bring mainly afternoon and evening thunderstorms
along with light snow in the higher elevations. Reduced lightning
activity expected during the latter part of the coming week, with
storms largely driven by instability working on lingering
moisture.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$



Hydrologic Outlook

Hydrologic Outlook
COC007-029-033-037-045-051-053-067-077-081-083-085-091-097-103-
107-111-113-UTC009-019-037-047-240000-

Hydrologic Outlook
National Weather Service Grand Junction CO
344 PM MDT Fri Apr 19 2019

...Rises on mid to lower elevation rivers and creeks possible through
this weekend...

Above normal temperatures, especially temperatures staying above
freezing at night, have allowed the snowpack at mid elevations to
melt at an accelerated rate.

At this time, rivers across eastern Utah and western Colorado are
not forecast to reach flood stage but rather just approach or
reach bankfull conditions.

Increases in river stages lead to much higher river flows making
for swift and unpredictable currents. Debris in the water could
create numerous snags. Water temperatures will be quite cold with
the introduction of the snowmelt.

If recreating or working in or near high flow waterways, use
appropriate safety gear. Unstable banks along fast moving
waterways may quickly give way and should be avoided.

Additional river and lake information is available at:

https://water.weather.gov/ahps2/index.php?wfo=gjt

$$



U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
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