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Flash Flood in Costilla County, Colorado

Flash Flood September 6, 2019 · Costilla County, Colorado

$150K
Damage as recorded

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Costillo County Emergency Manager reported flash flood and rock slide in Forbes Park, CO off the spring burn scar. Several dozen 36 inch boulders moved down the hill and a newly built retention pond was nearly blown out by the force of the water. 15-20 tons of sediment now fill the new pond.

The wider storm

A severe thunderstorm developed just north of the region and drifted into northern El Paso County on the evening of September 6th. As the storm moved towards I-25 it began to produce large hail. One report of quarter size hail was sent by a trained spotter. The storm continued to move to the east-southeast before dissipating.

Across Costilla and Huerfano counties, heavy showers and storms moved in from the San Luis Valley. These storms rode up the west side of the Sangre de Cristo Mountains impacting the Spring burn scar and then moved towards the east before dissipating across the Colorado plains.

Began near La Veta Pass (37.5200, -105.2600).

Source: NOAA Storm Events Database, event 857836. Narratives are written by the National Weather Service forecast office that issued the report.

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