Winter Storm — Franklin, Kentucky

2021-02-10 to 2021-02-11 · Franklin, Kentucky

Event narrative

Between a quarter inch and a half inch of ice accumulated in Frankfort, KY and surrounding areas. 0.3 inches of sleet also fell on top of the ice.

Wider weather episode

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_id 942563. Narrative written by the NWS forecast office that issued the report.