More than 55 million people across the central and southern US are at risk of severe weather on Tuesday as a violent storm sweeps across the country, bringing the potential for blizzard conditions, tornadoes and fire weather.

Officials are rushing to reschedule Mardi Gras celebrations and warning revelers against brining umbrellas and tents as powerful storms with a threat of tornadoes are expected to strike Louisiana and other parts of the South.

New Orleans parades and the Cajun version of Mardi Gras, called the courir, may seem worlds apart, But experts say they have more in common than you may think.

New Orleans moved up its two biggest Mardi Gras Day parades and cut down their routes to try to avoid the potentially destructive weather.

Mardi Gras celebrations kicked off this weekend in Northwest Arkansas, and there's more to come. HOUSTON, TEXAS - FEBRUARY 22: King cake at The Acadian Bakers who has been serving king cakes for 32 years Tuesday, Feb. 22, 2011, in Houston. (Johnny Hanson/Houston Chronicle via Getty Images)

The city’s two biggest parades are set to go on with earlier start times, shorter routes, and no marching bands, New Orleans Police Superintendent Anne Kirkpatrick told reporters Monday.

New Orleans moved up its two biggest Mardi Gras Day parades and cut down their routes to try to avoid the potentially destructive weather. Police are also expected to keep the hundreds of participants and dozens of floats moving quickly so they finish before winds are expected to pick up,

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