Debris Flow in Ferry County, Washington

Debris Flow February 7, 2015 · Ferry County, Washington

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

What the National Weather Service wrote

A CoCoRaHS reported a debris flow on a country road along with barn flooded 10 miles northwest of Kettle Falls, WA. The 24 hour rainfall total leading up to the event was 0.64 inches. The report noted that Snow-melt contributed to the event.

The wider storm

A four day interval in which a series of warm weather systems with very well maintained moisture feeds from the subtropics slowly moved through Northeast Washington. These systems brought considerable rainfall to the mountains and valleys and caused much of the mid-slope elevation snow to melt. The resulting runoff caused some streams and rivers to flood in addition to some debris flows, mudslides, and minor street flooding.

Began near Matneys Spur (48.6427, -118.1693).

Source: NOAA Storm Events Database, event 551812. Narratives are written by the National Weather Service forecast office that issued the report.

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