National Weather Service United States Department of Commerce

Areas of Heavy to Excessive Rainfall Which May Bring Flooding

Monsoon moisture will continue to produce areas of heavy to excessive rainfall and potential flooding across the northern Intermountain West today. Debris flows will be possible over recent wildfire burn areas. Heavy to excessive rainfall and flash flooding will be possible across the central Rockies into the south-central Plains and lower Mississippi Valley through Thursday. Read More >

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Hazardous Weather Outlook          (click for Full Text)

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FLUS45 KGJT 270917
HWOGJT

Hazardous Weather Outlook
National Weather Service Grand Junction CO
317 AM MDT Wed Aug 27 2025

COZ001>014-017>023-UTZ022>025-027>029-280930-
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-
317 AM MDT Wed Aug 27 2025

This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.

.DAY ONE...Today and tonight.

Widespread convection is expected again today. Storms will be
capable of producing heavy rainfall, small hail, gusty winds, and
frequent lightning. Flash flooding and debris flows are possible in
sensitive areas, such as slot canyons and recent burn scars. Storms
and flooding concerns will taper off quickly overnight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Showers and thunderstorms will continue into the weekend. A slight
downturn in shower coverage is expected by Sunday. Flash flooding
remains a concern in sensitive areas. Temperatures will run below
normal.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is unlikely, but any reports of flash flooding
and/or unexpected meteorological conditions would be welcome along
with rainfall amounts.

$$


 

 

 

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