A cold front cutting through the Midwest will usher in fall-like air, but not before powerful thunderstorms erupt through early tonight.
Thunder has already rumbled this morning across Iowa, Wisconsin and Nebraska. A few spots just north of La Crosse have even had wind gusts to 60 mph with hail the size of quarters.
A cocktail of warm and humid air ahead of the cold front will bubble into a frenzy of dangerous thunderstorms into early tonight.
Cities caught in the crosshairs will include Indianapolis to St. Louis and Tulsa through early tonight.
The main threats with these potent storms will be damaging blast of wind, more quarter-sized hail and vivid, dangerous lightning.
The worst is through Chicago, but the storms brought flight delays of a couple of hours earlier in the day. Similar delays can occur in St. Louis and Indianapolis from the storms through early tonight.
If you will be out and about, pay close attention to the weather. Be sure to heed any watches or warnings that may be issued and remember to never drive across a flooded roadway.
Be sure to stay with us at AccuWeather.com for all the latest details on this impending severe weather event.
Content contributed by Andy Mussoline, Meteorologist
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Record high of 86 degrees; the old record was 79 set in 1958.
Starksville, GA (1862)
Civil war drought: "The failure of oats in the region is total. Some wheat will be made but the crop is light and inferior."
Alpena, MI (1992)
Wet snow mixed with rain during the afternoon hours.