An unusually strong low pressure for this time of year will spark powerful storms across much of the East into Friday night.
Storms have already produced torrential downpours this morning across much of Ohio, Pennsylvania, New York and Virginia. More of the same is on the way as well as the potential for damaging wind, hail and a couple of tornadoes.
Cities targeted include New York City, Philadelphia, Baltimore, Washington, D.C., Harrisburg, Allentown, Richmond, Virginia Beach, Raleigh and Columbia.
The most potent storms will explode this afternoon as the low pressure heads toward the area and strengthens, feeding off of tropical-like humidity.
Damaging blasts of wind, hail larger than quarters, and drenching downpours are all possible as rounds of slow-moving storms track east.
According to Severe Weather Expert Henry Margustiy, "An upper level disturbance lifting northward across Long Island and into central and eastern New England has the potential to produce a couple of tornadoes during the afternoon and early evening."
Blinding rain from time to time will cause plenty of travel headaches for motorists on major interstates. I-95, I-81, and I-80 are all in the crosshairs. Conditions will be just as bad on the New York Thruway and the Massachusetts, New Jersey and Pennsylvania turnpikes.
If you'll be traveling to or from area airports into Friday night, don't expect anything better, as locally severe storms threaten to cause plenty of flight delays.
Be alert for rapidly changing weather conditions and heed any watches or warnings that may be issued. Remember, if a warning is issued, this means a dangerous thunderstorm is imminent and you should take shelter immediately.
Be sure to stay with us at AccuWeather.com for all the latest details on this impending severe weather event.
This weekend will be one of the busiest travel periods of the year across the country as millions people head home from Christmas travels.
A storm will bring bring the risk of flooding from Louisiana to Alabama this weekend, while rain may lead to travel delays in a large part of the South.
Just in time for Boxing Day and the weekend, a winter storm is set to dive into the United Kingdom and central Europe with rain and disruptive snow.
While lacking across a large part of the United States on Christmas Day, arctic air is set to make a comeback during the final days of 2014.
While many bowl games will be played in warmer locales this year, there are others that will face cold and potentially wintry conditions in the Midwest and Northeast.
The air quality is expected to improve across India and Bangladesh next week, when a tropical threat looms.
PA & NJ North to New England (1969)
6-36" of snow (Dec. 25-28). One of the heaviest in years in New York.
West Palm Beach, FL (1991)
3.07" of rain in one hour.
Pittsburgh, PA (1995)
Streak of 98 consecutive hours of snowfall ended.