After a system brings severe thunderstorms to the Central states into Thursday, its next stop will be the Atlantic Seaboard from New York City to Jacksonville, Fla., on Friday.
As many as 30 million people could be impact in some way by the storms on Friday.
The storms will pass through the central and southern Appalachians late Thursday night.
The greatest risk from the storms will be caused by wind gusts that can reach 60 mph. Winds of this strength can down tree limbs, cause sporadic power outages and even produce minor property damage.
As the squalls move through, flight delays are possible at major airports from New York City to Philadelphia, Baltimore, Washington, D.C., Charlotte, N.C., and Orlando, Fla. The storms in many areas will be limited to the morning and midday hours on Friday.
Flash, urban and small stream flooding will be another aspect of the storms that can lead to delays on the streets, highways and rural roads.
A few locations can experience hail.
There is also a slight chance of a couple of tornadoes being produced.
Locally strong winds are possible in the absence of thunderstorms, especially from northern Pennsylvania to New England. The gusty winds will follow a period of ice, wintery mix and snow in some areas across the north that can make for slippery travel.
Cooler, more stable air will move in behind the rain and the storms later Friday.