Humberto could become the season's next Category 3-4 hurricane, but the interest area set to become Imelda could be a threat to the Bahamas and U.S. Here's what you need to know in our latest forecast update.

The National Hurricane Center forecast shows the storm could reach hurricane strength as it approaches the southeastern U.S. coast early next week.

Tropical Storm Imelda is expected to form later today or early tomorrow from the depression we've been following near the central Bahamas. The system is forecast to steadily organize and intensify as it slowly moves north through the Bahamas and offshore of the Florida east coast.

Humberto rapidly strengthened into a major hurricane as it churned over the Atlantic Ocean, the National Hurricane Center said.

Thursday tropical update