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Extreme Cold/Wind Chill in Lower Columbia Basin, Washington
Extreme Cold/Wind Chill December 22, 2022 · Lower Columbia Basin, Washington
What the National Weather Service wrote
The Mesonet station THORS recorded wind chill values at or below -20 degrees from 2AM to 11AM December 22nd and the Mesonet station AV456 recorded wind chill values at or below -20 degrees from 4AM to 11AM December 22nd.
The wider storm
A strong northerly pressure gradient after the passage of an artic frontal boundary facilitated a period of extremely cold to hazardous wind chills, focused the evening of December 21st through the morning of the 22nd.
Source: NOAA Storm Events Database, event 1068279. Narratives are written by the National Weather Service forecast office that issued the report.
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