CEO Mark Zuckerberg addressed measures the social media giant is taking to protect the integrity of future elections during a Facebook Live on Thursday.
The storm was forecast to move near or just east of the Turks and Caicos and the southeastern Bahamas on Friday before swerving into the open Atlantic.
The San Francisco-based company will not have its current permit renewed when it expires in eight days' time, officials said.
Gravano, 72, who had been serving most of a 20-year sentence for drug-related convictions, was a former underboss for the Gambino crime family.
Hours later, North Korea's foreign minister reportedly said his country may test a hydrogen bomb in the Pacific Ocean.