State of emergency in the Northeast

New storms have caused flash-flood emergencies that are affecting millions.
2:09 | 08/14/18

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Transcript for State of emergency in the Northeast
fast-moving storms at this hour. States of emergency in the northeast. Rescues across Pennsylvania and New York. A fast-moving system rolling over New York City late today. You can see the sky there, quickly turning dark. And the water rescues tonight. Police right here near Philadelphia tomorrowing a human chain to save a grandmother trapped in her car. The track of storms heading into tonight, and ABC's erielle reshef from Pennsylvania. Reporter: Tonight, new storms flooding roads. Flash flood emergencies for millions in the northeast. Outside Philadelphia overnight, good samaritans and police using bed sheets to form a human chain, saving a grandmother trapped in her car. In New York -- My car is on top of Kim's car! Reporter: Floods waking residents before dawn. We have campers that are floating away with people inside. Reporter: First responders using high profile vehicles and boats to help rescue some 50 people, including firefighters trapped by flash flooding. I want to make this point as serious as a heart attack -- floods are nothing to play with. Reporter: Flood watches and warnings across Pennsylvania, too. Residents in this state also facing a massive cleanup ahead. And David, with the ground so saturated already, more rain could mean even more flooding. It's going to be a slow, even hazardous commute for thousands across the northeast tonight. David? Erielle, thank you. Let's get right to ginger zee, along the George Washington bridge for us again tonight. Good evening, ginger. Reporter: David, the rainfall totals are striking. A 7.1 inches in just four hours. These extremely slow-moving storms rotating around that low pressure system are to blame. And that's why we see a flash flood watch from parts of Pennsylvania through New York through tomorrow morning. We will see some drying, that is going to happen by tomorrow afternoon for everybody. But we're also going to heat up. Look at the 90s from New York City down T Washington, D.C., as we kick off the weekend. It will certainly feel like the dog days of August. Hot out west, but the winds bringing us red flag warnings from Nevada to Oregon. Ginger, thank you. We're going to turn now to the horrific pictures coming in

This transcript has been automatically generated and may not be 100% accurate.

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