This story has been updated.

Just days after Hurricane Harvey brought historic rainfall to parts of Texas and Louisiana, another potentially catastrophic hurricane looms in the Atlantic.

Hurricane Irma rapidly strengthened over warmer than normal ocean waters on Tuesday into a Category 5 storm with estimated wind speeds of 185 mph — the strongest ever measured in the Atlantic Ocean.

On Wednesday, Irma made landfall in a number of northern Caribbean islands at peak strength, including Barbuda, Anguilla, St. Martin, St. Barthelemy, and several of the British Virgin Islands. Its landfall tied a 1935 Florida hurricane for the strongest on record anywhere in the Atlantic basin, and the second strongest ever measured anywhere on Earth. In some of the first reports out of St. Martin, officials say the island suffered “major damage” with even some of the strongest buildings destroyed.