Some areas have already seen 1 to 3 inches of rain, and forecasters say an additional 2 to 4 inches is possible.

With rainfall rates that prolific, the threat of flash flooding is highly imminent. The flooding may prove to be locally severe, causing travel disruptions, property damage and the need for water rescues.

Storms are lashing the East Coast from Virginia to Connecticut, flooding roadways and delaying flights from Boston to Washington, D.C.