Tonight's storms are bringing heavy rain, wind damage and the potential for flash flooding.
"There is one large area that is being hit over and over again," says NBC10 Chief Meteorologist Glenn "Hurricane" Schwartz.
Take a look at this graphic, showing the storms moving right along the same area from Burlington County, N.J. all the way to Lancaster, Pa.
"This is my concern here because it's not just the potential for any individual storm creating some wind damage or hail," says Schwartz.
Here's a look at the Flash Flood warnings that have been issued for several parts of the NBC10 viewing area:
"This is incredibly heavy rain and that's one of the reasons we're concerned about the flooding," said Schwartz.
Schwartz says a Flash Flood warning is more dangerous than a regular flood warning because there can sometimes be rushing water.
Scattered showers are expected to move through the area until 9:00-10:00 p.m.
Stay with NBC10.com for updates in tonight's storm activity.