The Atlantic basin includes the northern Atlantic Ocean, Caribbean Sea and Gulf of America, as the Gulf of Mexico is now known in the U.S. per an order from President Trump. NOAA and the National Hurricane Center are now using Gulf of America on its maps and in its advisories.

Hurricane Erin, which briefly intensified into a Category 5 storm Saturday morning, weakened to a Category 3 by the evening as it underwent an eyewall replacement cycle in the Atlantic, forecasters said.