Extreme cold temperatures have settled in over most of the state. Winter storm warnings will go into effect on Tuesday. Precipitation — snow, sleet, freezing rain, or a wintry mix — will begin in southwest Alabama Tuesday morning and continue through the day, moving eastward.

With the chances of a historic Florida snow or ice storm inching upward, forecasters may issue a rare winter storm watch for a region more accustomed to squall lines and tropical threats.

The heaviest snow was expected to fall in New Jersey between 4 and 9 p.m. Sunday, with totals of up to 8 inches.