Ice Storm in Mercer, Kentucky

Ice Storm February 10, 2021 – February 11, 2021 · Mercer, Kentucky

What the National Weather Service wrote

Ice accumulation of 0.5 inches and 0.2 inches of sleet was reported in McAfee, KY. 0.3 inches of ice accumulation occurred near Shakertown.

The wider storm

An arctic airmass was centered over the northern Plains, and Kentucky and southern Indiana were positioned directly along a volatile boundary between the arctic air mass and a warm and moist tropical airmass associated with the Gulf of Mexico. The vertical temperature profile was ideal for the formation of freezing rain. The arctic air wedged itself beneath a warm and moist layer aloft. As energy associated with the jet stream passed over the Ohio Valley, a mix of wintry precipitation occurred. A large swath of freezing rain occurred, stretching mainly west to east across Kentucky.

Source: NOAA Storm Events Database, event 942579. Narratives are written by the National Weather Service forecast office that issued the report.

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