Flooding caused problems on multiple New York City subway lines Monday as torrential rain pummeled the Tri-State Area, where many were under flash flood warnings. Service on the 1, 2, 3, E, F, M and R lines was impacted at the height of the storm, according to MTA.info. Rail service resumed with some delays at around 10 p.m. Commuters were being urged to delay travel until train service was restored between Manhattan and the Bronx. MTA Chair and CEO Janno Lieber says riders can expect normal ser