Nearly 10 million people living in communities across North and South Carolina are bracing for tornadoes, as a series of deadly storms that already wreaked havoc in the South the day before is barreling toward the Eastern Seaboard.

With the potential for severe weather to return to the Carolinas on Wednesday there could be the possibility of tornados. But what is the difference between a tornado watch and a tornado warning? First Alert Chief Meteorologist Al Conklin helps us break it down.

On Wednesday, much of Hampton Roads was under a tornado watch at some point. Knowing the meaning of different alerts is essential.