EF2 tornado in Grant County, Indiana

A NWS survey of damage in Grant county indicated a tornado, reaching a maximum intensity of EF2, impacted a several mile long path. The tornado touched down on County Road 00 South, west of County Road 900 West where a hog barn suffered some roof damage. The tornado moved quickly northeast and intensified where it caused damage to two residences near the intersection of County Roads 300 North and 600 West. A large portion of the front wall of a one story home to collapse with subsequent removal of adjacent roof. A nearby home lost its entire roof (DI: MHSW DOD: 6). The tornado continued to intensify further approaching EF2 intensity as it cause extensive damage to a garage with the roof being removed and walls pushed down. Projectiles from the garage were found in the roof of the residence. EF2 intensity was reached around the intersection of County Road 325 West and Frances/Slocum Road where the top of a two story home was nearly removed (DI: FR12 DOD: 6). The tornado slowly weakened the remainder of its track impacting other residences with decreasing amounts and intensity of roof damage. Trees also suffered varying degrees of damage. The tornado cross briefly into Wabash county west of Grant County Road 00 West/Wabash County Road 600 East. The tornado was on the ground for over 11.5 miles with winds reaching a maximum intensity of around 125 mph.

Deep low pressure moved across the northern Great Lakes, with a strong cold front trailing well south into Arkansas. A 50 to 60 knot low level jet aided in advecting in dewpoints greater than 60 degrees. 0-1km storm relative helicity values of 400 to 600 m2/s2 setup the perfect environment for individual thunderstorms to rapidly rotate. Numerous circulations were noted during the event, some significant, which produced swaths of wind damage as well as several weak to strong tornadoes. Given forward speed of 60 mph or more, the convection quickly translated across the area in a matter of hours.