Damaging thunderstorms will threaten residents and travelers from North Carolina northward into southeastern Pennsylvania on Wednesday.
After only a few showers around the mid-Atlantic Wednesday morning, threatening weather develops in the afternoon and evening.
Downpours and thunderstorms are forecast to initially form in North Carolina around lunchtime before tracking northeastward toward Washington, D.C., and Philadelphia in the late afternoon and evening.
"The main severe threat will be locally damaging winds on Wednesday, especially during the afternoon," said Senior Meteorologist John Gresiak.
Travelers on Interstate 95, between Philadelphia and Fayetteville, N.C., can experience slow travel and reduced visibility as downpours cross the region, especially around the time of the evening commute.
"There may be enough spin in the atmosphere to spark an isolated tornado or two," said Gresiak.
The strong thunderstorm threat will evolve on the warm side of a wide-reaching winter storm.
Since the warmth may encourage time outdoors Wednesday afternoon and evening, people should be on heightened alert for approaching dark clouds and listening for thunder in the distance.
Pay close attention to any flash flood or severe storm-related warnings that may be issued.
Anytime you hear thunder, you are close enough to be struck by lightning. As soon as you hear thunder, seek shelter.
Following the stormy weather, it will turn windy, colder and drier for the remainder of Wednesday night.
The cold front will usher in a sharp change to colder weather on Thursday. High temperatures in some areas may plummet as much as 40 degrees Fahrenheit on Thursday in comparison to Wednesday.
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As it became obvious on Saturday that a major blizzard was going to hit the Northeast, the track and size of the storm became critical as to which areas would be hit the hardest.
Communities across the Northeast have endured heavy snow and fierce winds amid the first blizzard of 2015 with the storm continuing to churn over New England.
Lingering midwinter cold and additional rounds of snow will add to difficulties for cleanup and those without power after the Blizzard of 2015.
For Atlantic Canada, yet another winter storm will bring widespread travel disruptions on Tuesday.
People may think blizzards are about heavy snow, but it's more about wind, blowing snow and visibility, and parts of the Midwest and Northeast are more susceptible to the wrath of these conditions.
Florida had three-day freeze -- lowest ever in January with 8 degrees at Mason; 11 million boxes citrus damaged, $10 million loss.
Southwestern 1966 Oswego ()
Start of five-day blizzard with a total snow accumulation of 102 inches; 50 inches of it fell on the 31st. Bennetts Bridge got 54 inches.
now/wind closed schools, roads, stores, and factories. Timberline Ski Lodge was also closed and the snowmobile 500 International was canceled; strong winds blowing the Detroit River upstream caused a 1 foot drop in water level.