Most of the rain is forecast to fall in as little as 3-6 hours. A small chance of heavier rain and flooding could pose "an elevated threat to life and cause significant disruptions to transportation, flood underground infrastructure and basements and first floors of residences and businesses," with water rescues needed, the weather service said.

Parts of the Northeast are experiencing heavy rainfall today, as some roadways in New York City are flooded due to the wet weather. Footage shows a first responder checking in on a car stuck in the water.