The Atlantic's most powerful hurricane slams the Caribbean

A geocolor image of Hurricane Irma, captured by GOES-16 and released by the National Oceanic and Atmospheric Administration, Sept. 5, 2017 (NOAA via AP)

Early Wednesday morning Hurricane Irma, a Category 5 storm, made landfall in the Caribbean, first slamming into Antigua and Barbuda before moving over St. Martin, Anguilla and parts of the British Virgin Islands. It's now barreling toward Puerto Rico, and is expect to hit just north of the island Wednesday afternoon. Irma's heavy rain and strong winds, which have reached a sustained maximum of 185 mph, have made it the most powerful storm ever recorded in the Atlantic.

Irma's trajectory: The storm, which the National Hurricane Center has declared "potentially catastrophic," is expected to hit Puerto Rico, the Dominican Republic, Haiti, Turks and Caicos, and Cuba before reaching Florida and the Southeast U.S. this weekend, at which point it's expected to weaken to a Category 4 hurricane.

Meanwhile, two other storms are also building momentum in the Atlantic. Tropical Storm Jose is expected to become a hurricane by Wednesday night, and Tropical Storm Katia is strengthening in the Gulf of Mexico.