Jefferson Parish officials are canceling Mardi Gras Day parades because they are worried strong winds could flip floats, send tents flying and create other unsafe conditions. Why it matters: It's the first time the holiday's parades have been canceled in recent memory,

Heavy winds headed for New Orleans on Fat Tuesday appear poised to cancel two of the city's climactic Carnival events, the Zulu and Rex parades, after officials said they would stop the parades from rolling if the forecast worsened.

Thousands of revelers in outlandish costumes will fill the streets of New Orleans as the city celebrates Mardi Gras Day.