Ice Storm — Harrison, Kentucky

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

Event narrative

A quarter inch of ice accumulated, causing a few trees to come down. About 700 customers were without power.

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 942569. Narrative written by the NWS forecast office that issued the report.