The unoccupied houses collapsed within 45 minutes, the National Park Service said, as a high tide pounded the beach and washed over dunes.

Authorities in the Bahamas have closed a majority of schools following mandatory evacuations for some islands in the archipelago as Tropical Storm Imelda drops heavy rain and unleashes flooding in the northern Caribbean,

Imelda formed alongside Hurricane Humberto, which had weakened to a Category 2 storm by Tuesday morning after undergoing rapid intensification over the weekend. Humberto and Imelda follow hurricanes Erin and Gabrielle. As of 7 a.m. Tuesday, Imelda was 180 miles north of Great Abaco and moving northeast at 7 mph.

The twin hurricanes in the Atlantic Ocean have stirred up the waters. A high rip current risk remains for Coastal Georgia and the Lowcountry beaches through Wednesday. A high surf advisory also remains in place.

The National Hurricane Center is tracking two hurricanes in the Atlantic: Hurricane Humberto and newly formed Hurricane Imelda.

We’re tracking Imelda and Humberto over the Atlantic, which are both hurricanes. Imelda is forecast to hold its hurricane strength over the next few days as it tracks farther to the northeast away from the US coastline.

A rare meteorological phenomenon is expected to develop Wednesday as Hurricane Imelda moves over Bermuda, and the result could be extreme winds that can cause extensive damage.

Tropical Storm Imelda and Hurricane Humberto have both strengthened, now lurking a few hundred miles away from one another.