Debris Flow in San Miguel County, Colorado

Debris Flow July 20, 2021 · San Miguel County, Colorado

$500K

Damage as recorded

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

What the National Weather Service wrote

San Miguel Sheriff reported several mudslides in the east end of San Miguel County along Colorado Highway 145 Spur towards East Colorado Avenue. The road was closed for several hours due to cleanup operations.

The wider storm

Monsoonal moisture pushed northward across western Colorado as the ridge of high pressure tilted eastward. As a result, precipitable water values exceeded an inch over the southern and central zones. Given the increase in midlevel moisture, scattered to numerous showers and thunderstorms developed over the region. Some storms produced heavy rain which led to localized debris flows including across portions of the Grizzly Creek Fire burn scar.

Began near (tex)telluride Arpt (37.9350, -107.8030).

Source: NOAA Storm Events Database, event 965677. Narratives are written by the National Weather Service forecast office that issued the report.

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