There is a significant threat of severe weather Monday with the possibility of strong, long-lived tornadoes, especially across the upper Midwest. The threat of severe storms stretches southward across the High Plains and into the Southern Plains as well.

"A regional severe weather outbreak still appears possible across the Upper Midwest, with a threat of strong to intense tornadoes, very large hail, and swaths of damaging winds," said NOAA's Storm Prediction Center (SPC) in an update issued at 7:37 a.m. Monday.