Winter Weather in Union, Pennsylvania

Winter Weather February 22, 2021 · Union, Pennsylvania

What the National Weather Service wrote

SNOW SQUALL. A snow squall on the leading edge of a mesoscale band of heavy snow briefly dropped visibility to under one quarter mile in and produced flash-freeze conditions in Union County.

The wider storm

Low pressure passed over the Great Lakes and up the Saint Lawrence River valley from February 22 into February 23, 2021, pushing a warm front and cold front across central Pennsylvania. A narrow, north-south stripe of heavy snow (1-2 per hour) associated with the warm front passed over the Susquehanna Valley during the morning rush hour, and the heavy snowfall rates combined with the potential for a flash freeze prompted the issuance of snow squall warnings.

Source: NOAA Storm Events Database, event 944728. Narratives are written by the National Weather Service forecast office that issued the report.

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