Heavy Snow in Copper River Basin, Alaska

Heavy Snow December 20, 2021 – December 21, 2021 · Copper River Basin, Alaska

What the National Weather Service wrote

One of the people associated with the Department of Highways called the office to report 8 inches of new snow in Thompson Pass in the Copper River Basin.

The wider storm

A storm system moving northward from the North Pacific sent moisture associated with it over southern Alaska resulting in multiple precipitation type issues and hazardous weather. Arctic air already in place out ahead of the system remained entrenched at the surface. As warm air rode overtop the cold air at the surface, this resulted in precipitation type issues for certain areas.

Source: NOAA Storm Events Database, event 1002211. Narratives are written by the National Weather Service forecast office that issued the report.

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