After being slammed by Irma, Caribbean islands brace for Hurricane Jose

The Category 4 storm is following in Irma's footsteps.

— -- Less than a week after being slammed by Hurricane Irma, tiny Caribbean islands are bracing for a new threat: Hurricane Jose.

As of 5 a.m. Saturday, Jose was 190 miles east-southeast of the northern Leeward Islands. Hurricane warnings were in effect for St. Martin, St. Barts, Antigua and Barbuda, and St. Kitts. A tropical storm watch was in effect for the British Virgin Islands.

Browne described the damage to Barbuda from Irma as "horrible," saying the storm ripped into the island with the force of a "bomb" going off.

Meanwhile, Irma is advancing on the U.S. mainland and is now forecast to hit the Florida Keys as a Category 5 storm. Meteorologists expect Irma to make landfall in the Keys between 5 a.m. and 7 a.m. ET on Sunday. Overnight projections of Irma's path showed less of a threat to the Carolinas as the monster storm appeared likely to move directly up the middle of Florida and curve inland.

According to the AP, at least 20 people have died as a result of Irma.