The fast-moving line of storms was capable of producing destructive winds over 70 miles per hour and potential tornadoes, and was expected to clear the Chicago area and Northwest

Poor air quality is being observed Saturday for the state and Indiana, and air quality is expected to be at unhealthy levels for everyone, the weather service posted on X.

Following storms sweeping through overnight Friday into early Saturday morning, temperatures are expected to still be mild.

Severe weather warnings remain in place throughout the weekend as extreme conditions, including a tornado outbreak, threatens the South.

Most of the rest of north Alabama will have a Level 2 risk, and a small area in the northeast corner of the state will have a Level 1 risk. If storms can develop they have the potential to be intense, especially west of Interstate 65. Tornadoes, damaging winds and hail will be possible.

We all hear the terms when there's a threat of severe weather. But what does each alert mean, and how does it affect you?