A huge storm system crossing the U.S. threatens to unleash tornadoes Friday in the Mississippi Valley, blizzards in the northern Plains and dry, gusty conditions in Texas and Oklahoma that pose a high risk of wildfires.

Another unusually intense March storm is coming this week, and it may cause a bit of déjà vu, with severe thunderstorms, heavy rain, powerful wind gusts, wildfire risks and blizzard conditions possible across the country.

Violent tornadoes and high winds decimated homes, wiped out schools and toppled semitractor-trailers as a monster storm that also produced dust storms and icy conditions killed at least 33 people across the central and southern U.