Debris Flow in Whitman County, Washington

Debris Flow February 22, 2021 · Whitman County, Washington

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

What the National Weather Service wrote

A culvert failed leading to mud, water, and debris over State Route 23, at MP33 south of Lamont. The road was closed for clean up. No other reports of damage.

The wider storm

On February 22nd and with the passage of a strong cold front, an afternoon of moderate rainfall brought 0.25 to 0.50 inches of precipitation to portions of Whitman County. The additional rain contributed to a culvert failure along State Route 23, south of Lamont.

Began near Lamont (47.1615, -117.8718).

Source: NOAA Storm Events Database, event 944986. Narratives are written by the National Weather Service forecast office that issued the report.

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