Debris Flow in Mesa County, Colorado

Debris Flow August 18, 2023 · Mesa County, Colorado

$25K

Damage as recorded

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

What the National Weather Service wrote

A strong thunderstorm developed over the Grand Mesa before moving northward over I-70. This led to a significant rockslide occurring on the interstate near the Highway 65 junction, or near mile marker 49. The eastbound lanes were closed for a period of time with some of the rocks making it to the westbound lanes. Radar estimated 0.60 to 0.90 inches of rain fell.

The wider storm

As the ridge of high pressure moved into a more favorable position near the Southern Plains, western Colorado was able to access the deeper monsoon moisture. This led to increased coverage of showers and thunderstorms. Storms were slow moving and produced heavy rain which led to some flooding in portions of Mesa County.

Began near Cameo (39.1902, -108.2846).

Source: NOAA Storm Events Database, event 1113835. Narratives are written by the National Weather Service forecast office that issued the report.

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