A strong cold front is poised to sweep across the High Plains and Upper Midwest this week and will bring in much cooler air along with the potential for stormy weather. Many locations in this part of the U.S. broke record high temperatures over the weekend, but behind this cold front places like Minneapolis, Minnesota; Denver, Colorado; and Cheyenne, Wyoming could challenge record cool high temperatures this week.
For WeatherNation: Meteorologist, Jason CerjakDuring this time of year, whenever an air mass this cold invades the U.S., severe thunderstorms will likely be a consequence. The best chance for rough weather on Monday will be around the Denver and Cheyenne areas. On Tuesday, the severe risk shifts eastward into Iowa, Missouri, and Illinois.
Although many northern states will see a temporary invasion of autumn air this week, other locations in the Southwest and along the Pacific coast will remain hot. Phoenix and Las Vegas will stay above normal for the next three days. Portland, Oregon is also under a heat advisory for Tuesday and Wednesday.
Meteorologist Jason Cerjak