Hazardous Weather Outlook
Issued by NWS Grand Junction, CO

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FLUS45 KGJT 210856
HWOGJT

Hazardous Weather Outlook
National Weather Service GRAND JUNCTION CO
256 AM MDT Fri Jul 21 2017

COZ001>014-017>023-UTZ022>025-027>029-220900-
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-
256 AM MDT Fri Jul 21 2017

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

.DAY ONE...Today and Tonight

A flash flood watch is in effect for the area this afternoon
through midnight tonight. Monsoonal moisture remains in place and
will bring an increase in thunderstorm coverage by the afternoon.
Flash flooding due to heavy rainfall will become more likely,
especially over areas that are already saturated from recent
rainfall and areas of steep terrain. Some storms will also be
capable of producing gusty outflow winds and small hail but every
storm will have the potential to create dangerous cloud to ground
lightning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Some drier air works in from the northwest on Saturday for a
downturn in storm activity this weekend into early next week.
Another surge of moisture moves in by the middle of next week,
increasing the thunderstorm coverage.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected today or tonight, however
spotters are encouraged to relay rainfall amounts or any observed
flooding to the National Weather Service in Grand Junction.

$$



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