EF0 tornado in Grant County, Indiana

A survey of damage in west central Grant county revealed damage consistent with a brief EF0 touchdown. The tornado touched down a quarter mile east of the intersection of County Roads 300 South and 300 West. A storage shed on the property sustained some roof damage (DI: SBO DOD: 2) with extensive tree damage also noted. The tornado quickly lifted after crossing County Road 300 South. The maximum wind speed is estimated at 80 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.