A powerful storm system will bring several life-threatening weather hazards to Tennessee starting Wednesday night, including the threat of flash flooding and tornados, warns the National Weather Service.

When a warning is issued, take action. This means tornado conditions are imminent and have been spotted either by someone on the ground or by radar. Warning areas are typically smaller than those within a watch and are issued for a shorter time period, typically about 15 minutes.

A massive storm hitting the central U.S. on Wednesday could spin up damaging tornadoes and dump heavy rain from northern Texas to the Great Lakes.

The warning was in place for Dale and Henry counties.

West Michigan is expected to experience a mix of snow and freezing rain, ending Wednesday afternoon. Northern Michigan is forecast to receive 1-2 inches of snow with rain and strong winds. A flood watch is in effect for southeast Michigan, including metro Detroit, from Wednesday evening to Thursday morning.

A tornado warning means a tornado has been spotted or indicated by the radar. Stay in your safe place until the threat of the tornado has passed.

A tornado watch means that tornadoes are possible in an area, and a tornado warning means a tornado has been sighted or indicated by weather radar. If you live in an area that is under a tornado watch, you should take time to review your emergency plans and be ready to act quickly if a warning is issued or if you spot a tornado.

A Tornado Warning has been issued for the Mississippi counties of Benton, Marshall and Tate until 5:00pm. A tornado has been spotted or detected on weather radar. Seek shelter on the lowest level of a building in an interior room away from windows. If in a mobile home, find a more substantial shelter.

WATCH: Severe thunderstorm warnings and tornado warnings pepper the Mid-South ahead of main line of extreme weather

A powerful storm system will bring several life-threatening weather hazards to Tennessee starting Wednesday night, including the threat of flash flooding and tornados, warns the National Weather Service.

We're still gathering data and finding out more information." The storm prompted multiple thunderstorm and tornado watches and warnings on Sunday. Damage stretched across Indiana, from as far north as St. Joseph County, as far south as Warrick County ...