As we start the month of October, we are still talking about the chance for severe storms across the Plains. October is sometimes the secondary severe season. The transition between seasons has differing air masses colliding and sparking off storms. You can thank the dipping jet stream for this threat. The dipping jet translates to a cold front at the surface. Out ahead of this front, warm air with moisture from the Gulf of Mexico is streaming in. Behind the front, much colder air pulls in from Canada. The two air masses will clash and fire off severe storms this afternoon and evening.
The threat for severe extends from the Dakotas into Kansas and Eastern portions of Colorado. The best chance to see severe storms will be over Nebraska.
The main concerns with any severe storms that form will be large hail up to the size of tennis balls and damaging winds with gusts up to 70 mph.
Even an isolated tornado or two cannot be ruled out once again for portions of Nebraska like North Platte.
So, what are the main take aways? Well, the main time frame for these storms will be around 5:00 pm CT and continue close to midnight. Main threat will be large hail and damaging wind but an isolated tornado cannot be ruled out.
As the front progresses eastward Monday, the threat for severe goes with it. On Monday, places from Duluth to North Platte have the chance to see a few isolated severe storms.