EF0 tornado in Kosciusko County, Indiana

A NWS survey of damage revealed a brief tornado occurred south of Gravelton. The touchdown occurred just south of County Road 1250 North and east of County Road 400 West where a large metal barn was destroyed. The tornado crossed 1250 North and went through a corn field and impacted a small barn near County Road 200 West, north of County Road 1250 North where debris was thrown into another corn field where the circulation finally lifted. Maximum winds were estimated at 80 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.