Thunderstorm Wind — Knox, Ohio

2020-09-07 · near Mt Vernon, Knox, Ohio

Event narrative

Multiple trees uprooted or snapped in Mount Vernon.

Wider weather episode

A cold front moved slowly southward across Lake Erie and northern Ohio into a moist environment early Labor Day morning. A strong jet aloft fueled persistent moisture advection along with significant backbuilding and training of thunderstorms across the area between about 6am and 6pm Monday. This resulted in a widespread 2-5' of rain with isolated amounts even higher. Later that afternoon, the primary weather hazard shifted to severe thunderstorms with two tornado warnings and three severe thunderstorm warnings being issued, with lots of tree damage and hail up to 2' in diameter, mainly for Knox and Holmes Counties. The night concluded with heavy rain over urban portions of Marion County resulting in significant flooding in the City of Marion.

View location on OpenStreetMap → (40.4000, -82.4800)

Source: NOAA Storm Events Database, event_id 920135. Narrative written by the NWS forecast office that issued the report.