Wednesday’s widespread windstorm, severe weather outbreak, and unusual heat from the Rockies and Plains into the upper Midwest were so bizarre for December that even weather historians were in awe according to the Weather Channel.
“I can say with some confidence that this event – the heat and tornadoes – is among the most, if not the most, anomalous weather events ever on record for the upper Midwest,” weather historian Christopher Burt said. So here are the many strange and record-breaking aspects of this event that made it so notable for this time of year.
— Stu Ostro (@StuOstro) December 16, 2021
Prior to this outbreak, there hadn’t been a December tornado documented in Minnesota dating to 1950 according to CNN. There had only been one severe thunderstorm warning issued in Minnesota in December prior to this storm, according to tornado researcher Harold Brooks at the National Severe Storms Laboratory.
Wednesday night shattered that. Numerous severe thunderstorm and tornado warnings were issued as the squall line roared across southeast Minnesota. One EF0 tornado was confirmed near Lewiston. Damage in Hartland, Minnesota, may have also been due to a tornado, just one of several others in the state. Other NWS damage surveys were ongoing at the time this article was published.