Tuesday, June 6, 2017
Ahead of schedule: When our first 90 degree day usually occurs
We had our first 90 degree day this past Sunday and will likely experience several more 90 degree days this upcoming weekend. A fairly sizable pattern shift within the jet stream will occur late in the week allowing a big warm up to occur over much of the country.
By next week, the low forming in the northwest will help carve out a trough in the jet stream over the Plains. This will bring thunderstorms, possibly severe, over the Plains early next week. As the low is pulled into the upper Midwest showers and thunderstorms are possible Tuesday into Wednesday, depending on when the cold front associated with the low actually moves through.