A flash flood warning was in effect in New York City until 9:45 p.m., and New Jersey Gov. Phil Murphy declared a state of emergency. Middlesex, Morris and Somerset counties remained under a flood warning until 7:15 a.m. Tuesday.

Just one day after a fast-moving storm swept through New Jersey, causing dramatic rescues, a home explosion, and multiple deaths, officials have issued both a Flood Watch and Heat Advisory for the region.

Parts of New York City and Northern New Jersey were inundated on Monday night as widespread thunderstorms moved through.

The National Weather Service issued a flood warning at 9:07 p.m. on Monday in effect until Tuesday at 12:15 a.m. for Bergen County.

Two people were killed in New Jersey following flash flooding in the northeastern United States that caused travel chaos, authorities said Tuesday, as the region braced for more heavy rain.

Flooding is causing problems on multiple New York City subway lines as torrential rain pummels the Tri-State Area.

The National Weather Service released a flood warning at 9:51 p.m. on Monday in effect until Tuesday at 1 a.m. for Essex, Passaic and Union counties.