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.

Over the next week, tens of millions of Americans will be at risk of severe weather as a colossal storm marches across the country, threatening hurricane-force winds, major flooding, blizzard conditions and a possible tornado outbreak.

Severe thunderstorms and the threat of tornadoes will persist across the Southeast through most of the weekend, while heavy rainfall and high winds associated with the storm are expected in parts of the mid-Atlantic and Northeast by Sunday.

A sweeping storm system moving across the U.S. threatens to bring tornadoes, blizzards and possibly wildfires to different regions of the country

A powerful storm dropping drenching rain on flood-prone Southern California is raising concern among forecasters that it could produce a dangerous, widespread outbreak of tornadoes, damaging winds and fires along with a blizzard as it crosses the entire United States in the coming days.