Debris Flow in San Miguel County, Colorado

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

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

What the National Weather Service wrote

San Miguel Sheriff's Office reported a tree and mud over Colorado Highway 145 as a result of heavy rains.

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 Sawpit (37.9900, -108.0200).

Source: NOAA Storm Events Database, event 961535. Narratives are written by the National Weather Service forecast office that issued the report.

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