Mardi Gras celebrations in New Orleans could be cancelled as severe storms rumble through the South, bringing strong winds and the threat of tornadoes on Tuesday.

Thousands of revelers in outlandish costumes are filling the streets of New Orleans as the city celebrates Mardi Gras Day despite the threat of storms.

The Krewe of Rex parade route has changed once again, the New Orleans Police Department announced early on Mardi Gras morning. Due to incoming severe weather and high winds, Zulu and Rex changed their start times and routes on Monday.