It is the middle of September, but only one day after a tornado was spotted in northern Minnesota, that region is going to plunge into the deep freeze overnight.
The National Weather Service has issued a freeze warning for a portion of northeastern Minnesota for early Friday morning. The warning affects far northern Minnesota including the "Iron Range," where overnight temperatures are expected to drop below 30 degrees.
The weather service says sub-freezing temperatures will kill crops and sensitive vegetation that are not protected from the cold.
WDIO-TV in Duluth reports that temperatures in parts of the region may fall into the mid 20's overnight.