A round of fast-moving severe thunderstorms plowed through the Chicago area Sunday afternoon, producing hurricane-force winds and prompting tornado warnings in parts of Northwest Indiana. A tornado watch was issued throughout most the Chicago area and Northwest Indiana for much of the afternoon.

The tornado watch is in effect till 7 p.m. for Chicago, the surrounding south and west suburbs and northwest Indiana. The National Weather Service warns of tornadoes, hail the size of ping-pong balls and 70 mph winds.