Remnants from Tropical Storm Harold lifted across the Desert Southwest. This, combined with already abundant subtropical moisture, resulted in widespread showers and thunderstorms across western Colorado. Storms were slow moving and produced heavy rain. As a result of the heavy rain, some flooding and debris flows occurred in portions of Gunnison, Garfield, Mesa, and Montezuma counties.

Flood in MESA, COLORADO
From 24-AUG-23 21:30:00 to 24-AUG-23 22:00:00 (MST-7)
Location: DE BEQUE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain from thunderstorms resulted in minor flooding/ponding of water on portions of I-70 near mile marker 56 going east towards De Beque.

Flood in GARFIELD, COLORADO
From 24-AUG-23 20:00:00 to 24-AUG-23 20:30:00 (MST-7)
Location: RIFLE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain from thunderstorms flooded a basement at the intersection of 5th Street and Ute Avenue in Rifle.

Flood in SAN MIGUEL, COLORADO
From 24-AUG-23 13:00:00 to 24-AUG-23 20:00:00 (MST-7)
Location: EGNAR
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A CoCoRaHS observer southwest of Redvale reported flooding as a result of heavy rain from thunderstorms. Over an inch of rain was recorded, which led to partial erosion of the observer's irrigation ditch.

Flood in GUNNISON, COLORADO
From 24-AUG-23 17:00:00 to 24-AUG-23 17:30:00 (MST-7)
Location: MARBLE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Daniels Hill (a section of Gunnison County Road 3) was damaged and unpassable due to flooding from heavy rain. The road remained closed until the following afternoon.

Debris Flow in GARFIELD, COLORADO
From 24-AUG-23 17:00:00 to 24-AUG-23 17:30:00 (MST-7)
Location: ALLEN
Flood cause: Heavy Rain / Burn Area
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Department of Highways

Heavy rain from thunderstorms over the Grizzly Creek Fire burn scar resulted in the ponding of water along portions of I-70 with a mud and debris slide reported near mile marker 120.6 I-70 was closed in both directions from 1800 on the evening of the 24th to 0000 on the 25th.

Flood in MONTEZUMA, COLORADO
From 24-AUG-23 16:30:00 to 24-AUG-23 17:00:00 (MST-7)
Location: CORTEZ
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The emergency manager reported flooding at the intersection of 25 and L Roads northeast of downtown Cortez as a result of heavy rain from thunderstorms.

Flood in GARFIELD, COLORADO
From 24-AUG-23 20:00:00 to 24-AUG-23 20:30:00 (MST-7)
Location: RIFLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain from thunderstorms led to 6 inches of water flowing over 12th Street and Park Avenue in Rifle.

Flood in MONTEZUMA, COLORADO
From 24-AUG-23 17:00:00 to 24-AUG-23 17:30:00 (MST-7)
Location: CORTEZ
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The emergency manager reported that heavy rain from thunderstorms led to minor flooding across portions of Cortez, including some basements in homes along Highway 491 and Veterans Park.