A 13-year-old boy died after flash floods wedged him into a storm drain in Mount Airy Thursday night. His family paid their respects to the child Friday in an emotional tribute at the scene, but asked for privacy as they grieved. A single rose was placed on the open drain where the tragedy unfolded.

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.

New York and New Jersey have declared states of emergency as rainfall reaches up to 2-3 inches per hour in some areas.