EF1 tornado in Clark County, Indiana

Interviews with witnesses helped the NWS damage survey team determine that a second tornado developed to the west southwest of Henryville and moved along a 6 mile track that almost perfectly covered a portion of the track of a previous violent tornado around 15 minutes earlier. The second tornado was associated with a large supercell that brought softball sized hail just to the north of its tornado track. This tornado had intermittent contact with the ground, first touching down and causing tree damage to Round Knob in the Clark State Forest. Damage was then observed along and west of Speith Road, located just southwest of Henryville. Finally the tornado lifted after doing damage along the south side of Henryville from Robyn Avenue to near the intersection of Highway 60 and Haddox Road.

A surface Low over Missouri early in the afternoon of March 2nd strengthened to below 990mb as it moved north into Michigan by the evening hours. Around dawn, a warm front moved north of the Ohio River, accompanied by scattered elevated thunderstorms that produced small hail. During the early afternoon, temperatures rose into the lower 70s across southern Indiana. the combination of extreme wind shear and CAPE near 2000 Joules/kg brought several long lived supercells to the state near the Ohio River. These storms produced baseball-sized hail and several tornadoes, including a violent long-tracker, to southern Indiana. The tornadoes across the area were a part of a well forecast regional outbreak that affected the entire Lower Ohio and Tennessee Valleys. Overall, more than 80 tornadoes caused millions of dollars of damage and took several dozen lives.

For southern Indiana, March 2nd became the worst tornado outbreak since June 2nd, 1990.