New York City faces major flooding as heavy rain inundates region

New York City is facing major flooding as heavy rain slams New York, New Jersey, Pennsylvania and Connecticut.

Flash flood warnings were issued on Friday in Manhattan, Brooklyn, Queens, the Bronx, Staten Island and Long Island.

Some of the most severe flooding is in Brooklyn, which has had more than 7 inches of rain in the past 24 hours.

New York Gov. Kathy Hochul and New Jersey Gov. Phil Murphy have declared states of emergency.

The rainfall rate exceeded 2 inches per hour in Brooklyn Friday morning and rainfall rates could stay at 1 inch per hour through Friday evening.

"If you are home, stay home," New York City Mayor Eric Adams said at a news conference Friday. "We could possibly see 8 inches of rain before the day is over."

Adams said Friday evening that there were no reported deaths or serious injuries. First responders rescued people from three basements and 15 apartments due to the flooding, he added.

A travel advisory was issued in New York City.

The city's subways have "only extremely limited" service available, the Metropolitan Transportation Authority said. MTA Chairman Janno Lieber urged people to consider taking the bus.

"There are 3,500 buses out there. They are rolling. They are getting to their destinations," Lieber said during a Friday afternoon press briefing, noting that only 44 were stranded at some point during the day. "They are the lion's share of our mass transit right now."

One of the three Metro-North lines has been restored, Lieber said, while Amtrak told customers to prepare for train delays.

New York City's LaGuardia Airport and John F. Kennedy International Airport are reporting major cancellations.

All flights to LaGuardia were put on hold Friday morning due to the heavy rain while JFK recorded 8.58 inches of rain, marking the airport's wettest day on record.

By Friday night, the rain in New York City will lighten up. Showers may continue Saturday morning, but the rain will move out of the Northeast by Saturday afternoon.

This month now marks New York City's rainiest September since 1882. New York City has seen more than 14 inches of rain this month; the city's average September rainfall is just 4.43 inches.

ABC News' Sam Sweeney and Jason Volack contributed to this report.