Debris Flow in Cowlitz County, Washington

Debris Flow February 12, 2019 · Cowlitz County, Washington

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

What the National Weather Service wrote

The Cowlitz County Sheriff's Office said Kalama River Road was partially blocked in the 2800 block and was completely blocked in the 5000 block by landslides.

The wider storm

Back-to-back low pressure systems dropping south along the coast of British Columbia and Washington brought cold air south into SW Washington as well as plenty of moisture. Locations in the Columbia Gorge saw 1 to 2 feet of snow. At lower elevations, a near stationary frontal boundary Monday night into Tuesday morning dropped several inches of rain over portions of Cowlitz County causing flooding.

Began near Ariel (46.0159, -122.6969).

Source: NOAA Storm Events Database, event 810386. Narratives are written by the National Weather Service forecast office that issued the report.

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