Hurricane Sandy.
NASA GOES ProjectHurricane Sandy

One year ago today, Superstorm Sandy was just a twinkle in meteorologists’ eyes. The storm, which kicked up from a low-pressure area in the Caribbean Sea on Oct. 22, wouldn’t become an official hurricane for two days still. Even after it gained official hurricane status, raking across Jamaica and Cuba and soaking the Bahamas, U.S. weather models predicted that it would spin off into the North Atlantic and peter out, as most such storms do.

But Sandy did something different. After briefly losing steam, it rolled northward along the Eastern Seaboard and then veered left like a car that had just lost a wheel, barreling into the Jersey Shore and pushing storm tides through the streets of New York City. When the skies finally cleared and Wall Street opened back up, at least 159 people were dead, and the storm had caused $65 billion in damages and relocated the city’s rat population.