High pressure moving in this afternoon will leave skies mostly sunny across a good chunk of the Midwest today. Changes are on the way, however, as the jetstream which is currently in Canada shifts south by this weekend. Low pressure developing in the Plains Thursday morning will gain a little more strength as it moves into Nebraska late this afternoon. As it does warmer air from the south will lift north through Missouri and Iowa tonight likely causing a few elevated thunderstorms to form aided by the low level jet as well as a strengthening jetstream. While storms are not expected across the immediate area tonight there may be a few crossing over the Mississippi River into northwest Illinois by early Friday morning. With elevated thunderstorms hail becomes a primary threat.
Once this system passes Friday night highs this weekend will feel a lot more like autumn with temperatures in the low to mid 70s.
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