Which New York City Subway service was temporarily suspended during the 2003 Manhattan blackout?

All New York City Subway service was temporarily suspended during the 2003 Manhattan blackout.

The Northeast blackout began on August 14, 2003, affecting large parts of the northeastern United States and Ontario. In New York City, the loss of electrical power halted subway trains across the system. Thousands of passengers had to be evacuated from trains and stations while transit workers restored operations.

Subway service resumed gradually after power returned, but the disruption continued into the following day. The event demonstrated how dependent the subway is on the regional electrical grid, despite having its own transportation infrastructure.

The blackout is sometimes confused with subway-specific service suspensions caused by storms, maintenance, or individual power failures. The 2003 event was much broader: it affected the entire subway network and numerous other transportation systems, including commuter rail and traffic signals.