The FDNY and Department of Buildings responded to the situation at Broadway and Prince Street in SoHo just after 9 a.m.
The nine-story mixed-use building also had a huge icicle still hanging from the tower.
No injuries have been reported.
The falling ice damaged a van parked below the building and also cracked the windshield of a nearby police cruiser.
First responders were spraying water on the tower in an effort to melt the ice.