State area on Monday night, inundating the region with flash flooding that stranded vehicles in roadways, closed subway lines and led to the declaration of states of emergency.Flash flood watches and warnings were issued in New York and New Jersey as downpours moved through the region on Monday night.

Heavy rain caused significant transportation delays in the Northeast on Monday, with flash flooding submerging cars, flooding roadways and canceling flights -- and more wet weather is in the forecast.

Two people were killed in New Jersey during flash flooding as severe storms lashed the New York City area on Monday night into Tuesday, submerging cars and flooding subway stations.