 Any additional rainfall is really going to increase that chance for flooding, especially in the places that have already seen a good amount of it over the past day or so. We do have that enhanced risk for severe weather, including heavy winds, upwards of 75-mile-an-hour gusts, large hail, and tornadoes. Unfortunately, tornado threat is going to be highest, especially across northern Illinois, northwest Indiana, and over into Iowa. About a 5% chance starting at 7 o'clock tonight, lasting through midnight.