Invest 94L southeast of Florida in the Caribbean is expected to become a tropical depression over the weekend.

Spaghetti models—computer models that illustrate potential storm paths using meteorological data—suggested Invest 94L could potentially track toward the U.S. Southeast Coast.

A future storm named Imelda could affect the Southeast U.S. early next week, but there is plenty of uncertainty. Here are 4 concerns that our expert is watching.

Maximum sustained winds are now expected to hit 130 mph in 60 hours, making Humberto a Category 4 major hurricane. A major hurricane is one that's at least a Category 3 or higher storm, with sustained winds of at least 111 mph.

The tropics are heating up, with Hurricane Gabrielle and Tropical Storm Humberto both churning in the Atlantic as well as a new system that could strengthen and possibly impact the Southeast next week.

Two tropical disturbances were swirling in the Atlantic on Friday, with one being carefully watched because it could bring dangerous weather to the Southeast U.S. early next week.

Some uncertainty surrounds the tracks of both storms. However, Humberto is likely to recurve out to sea, avoiding landfall. But forecasters believe the other system to the west, Invest 94L, the future Imelda, could strike the East Coast near the Carolinas.

A fast-moving Hurricane Gabrielle is expected to bring heavy rain, high winds and a storm surge to the Azores islands. The National Hurricane Center in Miami says a hurricane warning is in effect