Freezing temperatures hit much of the Northeast this weekend, and a blizzard is expected to sweep through New York and Boston on Monday in what could possibly be the region's biggest snowstorm of the season.
The March storm, which has followed what has been a mild winter for the region, could dump up to 18 inches on Central Park between late Monday and Tuesday morning, according to The Associated Press.
The storm could bring periods of intense snowfall, with as much as 2 or 3 inches per hour possible at times.
Washington, D.C., could get 6-10 inches, Baltimore could see 8-12 inches, and Philadelphia is forecast to get 10-14 inches.
In New York and Boston, snowfall amounts depend on whether the precipitation mixes with sleet and rain. According to the latest forecasts, the cities could see 18 inches, if the snow doesn't mix with sleet and rain, or closer to 12 inches if there is mixing.
Meanwhile, the unseasonable drop in temperature has been mixed with sharp winds that are turning houses to ice.
An image of a New York house that had been turned into what looks like a block of solid ice on the banks of Lake Ontario was posted on the Facebook page of John Kucko Digital.
Snow and freezing temperatures also hit the South over the last few days, and Arkansas received between four and five inches of snow.
One to three inches of snow fell in parts of Tennessee and produced travel delays and driving accidents throughout the state.
The Southeast has received wild vacillations of weather in recent weeks. Warm streaks experienced throughout February caused plants to blossom early this year, but the sharp drop in temperatures caused the early risers to be frosted over with ice and snow.
ABC News' Max Golembo and The Associated Press contributed to this report.