Hurricane Humberto strengthened into a powerful Category 4 hurricane in the Atlantic while a disturbance dubbed Potential Tropical Cyclone Nine is striking the Caribbean and taking aim a the Southeast United States.

The National Hurricane Center is tracking two hurricanes and two tropical waves in the Atlantic. We're in the busiest time of hurricane season.

The Atlantic is suddenly buzzing with activity. Hurricane Gabrielle has exploded into a Category 4 storm east of Bermuda, and two more systems — one nearing the Caribbean and another farther east — could soon follow.

The National Hurricane Center gives the system a 90% chance of development, with models split between a Florida or Carolina landfall — or heading out to sea.

Tropical Storm Humberto formed several hundred miles east of the Caribbean on Wednesday afternoon, becoming the eighth named storm of the 2025 Atlantic hurricane season.

Two systems are capable of bringing impacts to the Caribbean and the southeastern U.S., according to AccuWeather meteorologist Alex Sosnowski.