Debris Flow in Siskiyou County, California

Debris Flow September 10, 2021 · Siskiyou County, California

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

What the National Weather Service wrote

A mudslide coming down Whitney Creek on the northwest slope of Mount Shasta impacted Highway 97. This occurred at 0507 PDT on 09/10/21. 0.4 to 0.7 inches of rain fell in the area over four hours. This slide was likely due to the rainfall, combined with glacial melt from the Whitney Glacier. The slide closed Highway 97 for a short time, and one semitrailer truck was stuck in the mud. No injuries or fatalities occurred.

Began near Hotlum (41.5312, -122.2585).

Source: NOAA Storm Events Database, event 976611. Narratives are written by the National Weather Service forecast office that issued the report.

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