Jul 2, 2013
A mini-supercell occurred in the vicinity of a 500 mb low centered over the middle Mississippi Valley. A surface low pressure center was located near Louisville, Kentucky. A moist low level air mass combined with diurnal heating resulted in isolated showers and thunderstorms. One of these storms was a mini-supercell which produced a weak tornado. During the early morning hours, a stationary cluster of showers and thunderstorms produced flooding of creeks and small rivers.
Source: NOAA National Weather Service Storm Events Database (event 463722). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Jefferson County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.