Welcome to the fall. The sun angle is quickly decreasing, and cold air is really starting to pool to our north. With all of that said, we're talking about an active jetstream, and that's a sure sign of the fall. season The jetstream's strongest winds occur during the winter; however, they do start increasing throughout the fall, and that can spell severe weather outbreaks.

Severe weather may be an issue to our north this weekend. Look at the jetsream to our north. Divergence aloft will mean rapid lift for showers and storms throughout the upper Midwest. We call this a negatively tilted trough, which is very indicative of severe weather when moisture is present.

With most of the dynamics to our north, we'll only see a slight chance for showers and storms on Sunday.