EF1 tornado in Lagrange County, Indiana

A NWS survey found damage consistent with a EF-1 tornado in a larger area of straight line wind damage. The tornado touched down just west of LaGrange on US-20 East of County Road 100 West, where tree limb damage was observed. The tornado tracked east towards LaGrange, uprooting and snapping trees as it entered the town south of the local hospital. Numerous trees were uprooted and snapped just west of South County Road 00 East between US-20 and Grant Street. The tornado produced minor structural damage to homes along Grant Street before lifting just west of South Mountain Street. Maximum winds were estimated at 95 mph.

A line of severe thunderstorms developed in eastern Iowa during the afternoon hours of June 30th. Plenty of instability and moisture was available for the line to mature into a severe bow-echo with the bulk of this racing northwest of the area into Wisconsin and Central Lower Michigan. The southern flank of this line did briefly take on bowing characteristics, producing gusty winds over southern Lake Michigan into portions of northwestern Indiana and far southwestern Lower Michigan before dissipating. Behind this line, a much stronger line of thunderstorms rapidly developed on a pre-frontal trough in northern Illinois. This line had much more favorable parameters to work with deep layer shear to 50 knots and a rapidly increasing low level jet to 50 knots. As this second line of convection raced into northwestern Indiana during the late evening hours, several stronger circulations were noted along the leading edge that lead to multiple tornado confirmations and swaths of at times extensive wind damage. The second event continued into July 1st with additional wind damage and confirmed tornadoes occurring during the early morning hours.