Weather forecasters and public bodies issued health and power loss warnings Tuesday as a “rare winter storm" gripped part of the southern and eastern U.S.

So many of you have never seen an event like this,” Louisiana’s state climatologist warned, with New Orleans facing possibly the most snow it has ever seen.

Roughly 40 million people from Texas to the Carolinas are under winter weather alerts, as a rare winter storm brings bone-chilling temperatures and potentially historic snowfall to cities unused to harsh cold weather.

Residents across parts of the Gulf Coast and South are bracing for a rare winter storm expected to drop heavy snow and create treacherous conditions.

Around 40 million people in the U.S. are under a winter storm warning from an unusual blast of severe winter weather.

The beaches even may see a wintry mix of snow, sleet and freezing rain, the weather service said, with the mainly snow expected.

Most cities in the region don't have snowplows. Louisiana had 400,000 pounds of salt ready to spread over roads and bridges in preparation for the icy conditions.

Winter storm Enzo is expected to bring severe travel disruptions and unusually cold weather to the far southeast on Monday and Tuesday.

President Donald Trump will order the U.S. to withdraw from the Paris climate agreement, the White House said on Monday, once again placing the world's top historic emitter of greenhouse gas emissions outside of the global pact aimed at pushing nations to tackle climate change through domestic actions.

Snowfall Tuesday is imminent and accumulation could reach as high as 5 inches for some areas along the coast.While it is difficult to forecast accumulation, an