In the days before Christmas, a big snowstorm could hit the central and eastern U.S., which could make it hard to get around.

AccuWeather forecasters say there is a growing chance that a “potential blockbuster system” will hit before Christmas, but accurate predictions for Christmas Day are still a few days away.

AccuWeather says that the storm will happen at the same time as a wave of Arctic air that will drop temperatures to “bone-chilling levels.” Most of the country, including the East Coast, South, and Midwest, will have below-average temperatures in the days before Christmas, according to the National Weather Service. This is because the Arctic air mass is moving toward the Midwest and Ohio.

A winter storm is forecast for the days leading up to Christmas

AccuWeather says that from December 22 to 24, snow could fall in the southern Plains, the Midwest, the Northeast, and maybe even the interior Southeast. Snow, dropping temperatures, and strong winds could make it hard to get around in parts of the lower Mississippi Valley, the Midwest, and the Northeast.

AccuWeather Chief Meteorologist Jon Porter said, “This storm is likely to get stronger because of the sharp difference between the rushing arctic air coming from the Central states and the relatively warm air in the Southeastern U.S.”

As Christmas gets closer, forecasters will have a better idea of where the storm will go and where it might snow the most.

Maine to get heavy snow from a Nor’easter

On Saturday, a nor’easter could bring up to two feet of snow to some parts of Maine.

The National Weather Service says that parts of Maine, New Hampshire, Vermont, and New York are under winter weather warnings through Saturday. There could be dangerous driving conditions and a few power outages.

The snow is part of a strong storm system that has been going on for a week. On Friday, more than 5 million people in the Northeast United States were warned about a winter storm, while the upper Midwest was hit by a blizzard.