Flooding caused delays on multiple New York City subway lines Monday as torrential rain pummeled the Tri-State Area, where many were under flash flood warnings. MTA Chair and CEO Janno Lieber says riders can expect normal service for the morning commute Tuesday.

Climate change has made extreme rainfall more common and more intense. But many flood risk maps have yet to catch up.

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

Torrential downpours battered the New York metropolitan area on Monday night, unleashing widespread flash flooding that brought transit systems to a standstill, submerged roads and highways, and disrupted air travel across several major airports.

Two people died in New Jersey after their car was swept away. Public transit was largely running normally on Tuesday morning, hours after water flooded subway stations and damaged highways.

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

While FEMA has improved the accuracy and accessibility of the maps over time with better data, digital tools and community input, the maps still don't capture everything.

New York City’s subway system was fully operational for the Tuesday morning commute, however some roads remained closed in sections of New York and New Jersey after heavy rain swept across the