EF1 tornado in Freeborn County, Minnesota

This tornado track and timing are based on drone and ground survey from the Freeborn County Sheriff's Office as also videos from two different storm chasers. The tornado appears to have taken a semi-circular path, first moving east and then northeast. A farm was hit at 43.8283, -93.5877 where several outbuildings were destroyed and trees snapped. The maximum wind speed was estimated at 105 mph; this was based on drone video and ground-based photos provided by the Freeborn County Sheriff's Office.

A southward moving cold front tracked across central and southern MN early Monday morning before stalling near Redwood Falls, MN over to Eau Claire, WI. Morning stratus associated with this frontal boundary aided an increased thermal gradient along this boundary. Later in the afternoon, a surface low centered over eastern Nebraska advected unstable air into much of southern MN. This airmass converged on the pre-existing stationary boundary which led to the initiation of several severe thunderstorms. Many thunderstorms produced large to very large hail measuring as large as 3.5 in diameter as well as four tornadoes across southern Minnesota.