The National Weather Service issued a severe thunderstorm watch in effect until 9 p.m. in Ocean City and southern New Jersey.
A line of storms could produce heavy rain and localized flooding.
As of 2:15 p.m., radar showed the nearest storms still in Pennsylvania.
More storms are in the forecast for Thursday before the weather clears on Friday and the weekend.
Tropical Storm Arthur is expected to be far out to sea when it passes Ocean City on Friday.
