Intense afternoon and evening storms brought flash flooding to the tri-state Monday, with the sudden and heavy downpours leading to impassable roads and dangerous conditions for drivers. Flash flood warnings were issued for different counties in and around New York City starting after 3 p.

The heavy downpours wreaked havoc across the city with footage showing commuters overwhelmed by floodwaters in various subway stations.

At 6 p.m. Monday, July 14, a warning from the National Weather Service said up to 2.5 inches may have already fallen in southern Westchester.

Flash floods are occurring across the U.S., from Texas to New Jersey. Here's what you should know as risks escalate.

Severe flash flooding across the tri-state area on Monday caused subway delays and road closures across the Big Apple and pushed New Jersey to declare a state of emergency. All five boroughs and Nassau County are under a flash flood warning through midnight.

The heaviest rainfall and the most widespread thunderstorms are expected to develop from Northern Virginia through southern New England in the afternoon. The Weather Prediction Center has issued a “moderate” (Level 3 out of 4) risk for flash flooding in that corridor through Tuesday morning.

The National Weather Service has expanded a warning for potential 'life threatening' flooding in NY to include Rockland and central .

Severe flash flooding struck New York City, Westchester County, Staten Island, and Rockland County, Bergen, Essex, Hudson, Passaic