From the end of 1960 through October 1993, the building's mezzanine level housed the New York City weather forecast office of the National Weather Service; it was relocated to eastern Long Island, on the grounds of Brookhaven National Laboratory at Upton, New York. KWO35, the NOAA Weather Radio station serving the majority of the Tri-State area, originally transmitted from atop the building and remained there until 2014. Due to interference with a U.S. Coast Guard radio channel, the transmitter was eventually relocated atop the MetLife Building. A weather radar station was also located atop the building (it was previously used as "Doppler 4000" during WNBC-TV's local newscasts) until StormTracker 4, an S-band weather radar located at Rutgers University's Cook Campus, replaced it on February 1, 2017.