Debris Flow in Siskiyou County, California

Debris Flow July 27, 2021 · Siskiyou County, California

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

What the National Weather Service wrote

California Highway Patrol reported at 27/1249 PST that Whitney Creek was nearly to the level of the roadway. The creek surged intermittently with debris and snowmelt. At one point it rose 8 feet in 10 seconds. Highway 97 was closed intermittently through the afternoon and early evening. The last law enforcement units were cleared from the area at 21/1837 PST.

The wider storm

A debris flow from the flanks of Mount Shasta moved down Whitney Creek, which periodically overflowed Highway 97 in Siskiyou county, causing several closures of the highway in the afternoon and early evening.

Began near Cougar (41.5600, -122.2400).

Source: NOAA Storm Events Database, event 963772. Narratives are written by the National Weather Service forecast office that issued the report.

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