Wednesday afternoon's deadly tornado that tore through parts of Grant and Otter Tail counties was upgraded from an EF-3 to and EF-4 on Friday. The storm killed one person and injured two others.
Our survey teams have ranked the Grant/Otter Tail counties tornado from the late afternoon/early evening of Wednesday, July 8th an EF-4. For more information, please see our web page regarding the event. #mnwxhttps://t.co/h4ruw3HbjM pic.twitter.com/mV7jEksPQM
— NWS Grand Forks (@NWSGrandForks)
July 10, 2020 According to the NWS in Grand Forks, the tornado traveled nine miles after developing at 5:08 p.m. 6.5 miles west of Ashby. The twister lifted 5 miles east of Dalton after reaching estimated peak winds of 170 MPH.
Related Local storm chaser shows Otter Tail County Tornado from up close
It was the first EF-4 tornado in Minnesota since August 7, 2010 when a tornado struck Wilkin County.
Wednesay's tornado rating is a preliminary rating. A final rating will be published in the coming months.
