National Weather Service United States Department of Commerce

Details on the Severe Weather from Thursday, September 20, 2018

Damage survey results, photographs, meteorological information, and storm reports from the severe weather event of Thursday, September 20, 2018. Read More >


Warm air advection and convergence associated with low pressure over eastern Colorado led to severe thunderstorms that produced tornadoes in central Minnesota. Of the 15 tornadoes reported, an F2 was the strongest and caused the most damage in Buffalo Lake. Two inch hail was reported in Rock County and 1.75 inch hail was reported in Pope, Lyon, and Renville Counties. Also, the Minneapolis International Airport recorded wind gusts of 58 miles per hour.