Fort Worth Metroplex as a significant severe weather threat unfolds. Tens of millions of people are on alert from the Plains to the Southeast for thunderstorms that could produce large hail, damaging wind gusts and tornadoes.

A​ powerful storm system will continue to spread severe thunderstorms that could produce tornadoes, damaging winds and hail in the South and East through Wednesday. H​ere's a look a the latest timing and threats for the severe weather.

There are signs that March could feature above-average tornado activity, especially across the Deep South. April may start ... North Texas and far southeast Oklahoma near the Red River Valley ...