Several rounds of severe thunderstorms are expected across northern Illinois Wednesday, with forecasters saying the main threat is damaging and destructive winds with each round of storms.

The storms could see winds reach up to 75 mph with the possibility of large hail, up to an inch in diameter, the National Weather Service said.

Additional rounds of severe thunderstorms are possible on Thursday. The period of greatest concern will be during the afternoon and evening when tornadoes, destructive winds, damaging hail, and flash flooding are possible, the NWS said.