Flash floods warnings in NYC, NJ amid heavy rainfall, thunderstorms Monday

New York - Flash flood warnings are in effect across the New York City area on Monday as multiple rounds of heavy rain batter the region once again. 

It comes after the National Weather Service expanded a flood watch through tonight to northern New Jersey and all of New York City, with heavy rainfall and severe thunderstorms likely into the afternoon.

What we know:

New York City is under a Level 2 out of 4 flash flood threat, FOX Weather reports. The entire Tri-State Area is under a Level 1 severe weather threat, which means there's potential for damaging wind gusts.

Rainfall totals will average between three-quarters of an inch to an inch and a half, but it's possible portions of northeast New Jersey, NYC, the Lower Hudson Valley and southwest Connecticut will see near three inches, according to the National Weather Service. 

NYCEM urges residents to stay prepared

What you can do:

With NYC under a flood watch Monday, city officials are asking residents to be prepared, especially those in flood-prone areas, including basement apartments. 

"During periods of heavy rain, move to higher ground," NYC Emergency Management posted on social media. "If in a basement, move to a higher floor. If you must travel, use caution."

NYC weather this week

What's next:

After Monday's flooding threat passes, a high pressure system will move into the area and make for a nicer Tuesday. 

But, it won't last for long, with a threat of pop-up showers Wednesday through Friday.

WeatherNew York CityNew Jersey