EF1 tornado in Kosciusko County, Indiana

A survey of damage east of Mentone by a NWS Survey team revealed that a EF1 tornado produced damage along a roughly 1 mile path. Touchdown occurred southwest of the intersection of State Route 25 and County Road 800 West with the tornado quickly moving northeast and impacting a residence and barn on the southeast corner of the same intersection. A few small hardwood trees were snapped with the adjacent residence suffering minor shingle damage. An adjacent barn was shifted off its foundation with the north facing doors and wall buckled. As the tornado crossed State Route 25 it clipped a residence, causing roughly 75 percent of the roof and trusses to be ripped off and thrown to the north northwest about 250 yards. Power poles on the north side of the road were also blown down. As the tornado continued northeast it cause widespread tree damage in a wooded area, as well as minor structural damage to a home along South Tinkey Road. The tornado lifted shortly after this point, southeast of the intersection of Tinkey and Shilling Roads. Maximum wind speeds with the tornado are estimated at 100 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.