The combination of the monsoon plume and moist low level upslope flow allowed for thunderstorms with heavy rainfall and flash flooding to occur on this day across the region. The highest concern for flash flooding was over the mountains and I-25 corridor region, but later in the evening, additional flash flooding occurred along and south of Highway 50.

Heavy Rain in PUEBLO, COLORADO
From 31-JUL-21 22:10:00 to 31-JUL-21 23:55:00 (MST-7)
Location: BLENDE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rainfall of 4.04 inches. First 3 inches of rain fell in approximately 1 hour.

Flash Flood in OTERO, COLORADO
From 31-JUL-21 22:49:00 to 31-JUL-21 23:49:00 (MST-7)
Location: LA JUNTA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple underpasses were flooded in La Junta.

Flash Flood in PUEBLO, COLORADO
From 31-JUL-21 22:57:00 to 31-JUL-21 23:57:00 (MST-7)
Location: (PUB)PUEBLO MUNI ARP
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A few to several inches of water accumulating and flowing in areas surrounding the National Weather Service Pueblo Forecast Office building. This included sidewalks, parking lot, and yard.

Heavy Rain in EL PASO, COLORADO
From 31-JUL-21 21:23:00 to 31-JUL-21 23:23:00 (MST-7)
Location: PETERSON AFB
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rainfall of 3.22 inches.

Flash Flood in EL PASO, COLORADO
From 31-JUL-21 15:36:00 to 31-JUL-21 17:36:00 (MST-7)
Location: MONUMENT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Streets were flooded, and vehicles were stranded.

Flash Flood in EL PASO, COLORADO
From 31-JUL-21 16:28:00 to 31-JUL-21 18:28:00 (MST-7)
Location: PETERSON AFB
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Streets were flooded and vehicles stranded.

Flash Flood in HUERFANO, COLORADO
From 31-JUL-21 16:30:00 to 31-JUL-21 18:30:00 (MST-7)
Location: CUCHARA
Flood cause: Heavy Rain / Burn Area
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Highway 12 was closed at Big Branch Creek for water and debris over the road.

Flash Flood in EL PASO, COLORADO
From 31-JUL-21 17:10:00 to 31-JUL-21 19:10:00 (MST-7)
Location: COLORADO SPGS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Streets were flooded and vehicles were stranded.

Flash Flood in HUERFANO, COLORADO
From 31-JUL-21 18:07:00 to 31-JUL-21 20:07:00 (MST-7)
Location: CUCHARA
Flood cause: Heavy Rain / Burn Area
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flash flooding occurred over Highway 12, with the road closed.

Flash Flood in HUERFANO, COLORADO
From 31-JUL-21 18:09:00 to 31-JUL-21 20:09:00 (MST-7)
Location: LA VETA
Flood cause: Heavy Rain / Burn Area
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Road 421 was overtopped for hundreds of yards.

Flash Flood in HUERFANO, COLORADO
From 31-JUL-21 18:10:00 to 31-JUL-21 20:10:00 (MST-7)
Location: (VTP)LA VETA PASS
Flood cause: Heavy Rain / Burn Area
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Water overtopped County road 442.

Flash Flood in LAS ANIMAS, COLORADO
From 31-JUL-21 19:56:00 to 31-JUL-21 21:56:00 (MST-7)
Location: AGUILAR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Roads were washed out in the Mauricio Canyon area.

Flash Flood in BACA, COLORADO
From 31-JUL-21 20:04:00 to 31-JUL-21 22:04:00 (MST-7)
Location: CAMPO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Roads were washed out at County Road J and 40, east of Campo with approximately 3 feet of water.

Flash Flood in LAS ANIMAS, COLORADO
From 31-JUL-21 22:04:00 to 31-JUL-21 23:45:00 (MST-7)
Location: (TAD)TRINIDAD ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Highway 160 was closed due to flash flooding and debris flows. Severe under cutting of the roadway.

Heavy Rain in EL PASO, COLORADO
From 31-JUL-21 16:30:00 to 31-JUL-21 18:30:00 (MST-7)
Location: PETERSON AFB
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rainfall of 2.20 inches.

Heavy Rain in EL PASO, COLORADO
From 31-JUL-21 16:31:00 to 31-JUL-21 18:31:00 (MST-7)
Location: PETERSON AFB
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rainfall of 2.00 inches. One inch fell in 45 minutes.

Heavy Rain in EL PASO, COLORADO
From 31-JUL-21 17:09:00 to 31-JUL-21 18:39:00 (MST-7)
Location: PETERSON AFB
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rainfall of 3.00 inches.

Heavy Rain in HUERFANO, COLORADO
From 31-JUL-21 17:12:00 to 31-JUL-21 18:12:00 (MST-7)
Location: RED WING
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Heavy rainfall of 1.00 inches, on the Spring Burn scar.

Heavy Rain in HUERFANO, COLORADO
From 31-JUL-21 18:44:00 to 31-JUL-21 21:44:00 (MST-7)
Location: LA VETA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Heavy rainfall of 3.45 inches.

Heavy Rain in PUEBLO, COLORADO
From 31-JUL-21 19:43:00 to 31-JUL-21 21:43:00 (MST-7)
Location: RYE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Heavy rainfall of 2.50 inches. Greenhorn Creek was above the bridge in Rye, along with a road closure.

Heavy Rain in CUSTER, COLORADO
From 31-JUL-21 21:08:00 to 31-JUL-21 23:08:00 (MST-7)
Location: ROSITA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Heavy rainfall of 1.06 inches.

Heavy Rain in EL PASO, COLORADO
From 31-JUL-21 19:36:00 to 31-JUL-21 21:36:00 (MST-7)
Location: MONUMENT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rainfall of 1.80 inches.

Heavy Rain in PUEBLO, COLORADO
From 31-JUL-21 21:35:00 to 31-JUL-21 21:55:00 (MST-7)
Location: BLENDE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rainfall of 1.44 inches, in 20 minutes.