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 has undergone a period of astonishingly rapid intensification — a phenomenon that has become far more common in recent years as the planet warms. It was a rare Category 5 on Saturday before weakening,

Early Monday, the storm strengthened into a Category 4 hurricane, packing maximum sustained winds of 130 mph as it approached the southeastern Bahamas, the NHC reported.