Humberto is forecast to continue strengthening and is expected to be a Category 4 storm over the weekend. Predictions on how Humberto could affect Florida and the U.S. are difficult due to the Fujiwhara effect.

As Hurricane Humberto gained momentum Saturday as a Category 4 storm in the Atlantic, forecasters have been keeping an eye on a bigger threat to the west: the soon-to-be Tropical Storm Imelda, which some forecast models predict will make landfall in the Carolinas.

The tropics are showing some real signs of life this week with two individual hurricanes developing side-by-side not far off the East Coast. These storms emerge amidst a quiet season overall, and impacts are expected as they continue on paths in the vicinity of our coastlines.

Crews spent Saturday making preparations for an unnamed weather system that is forecast to become Tropical Storm Imelda late Saturday or early Sunday before approaching the coast of South Carolina

A complex weather dance is underway in the central Atlantic Ocean this week as a pair of developing tropical systems try to get their act together.

Have you noticed how many hurricanes starting with the letter "I" have been terribly destructive lately? It turns out there's a simple explanation.

Hurricane Humberto has intensified into a Category 4 storm with 145 mph winds in the Atlantic. While no US landfall is forecast, dangerous swells and rip currents are affecting Puerto Rico, Bermuda, and the U.

Many people think of warm ocean temperatures as the main force behind the evolution of hurricanes. And, yes, the hot seas contribute immensely to powering nascent tropical systems. But 80 percent of major hurricanes during the Atlantic season actually start off as a mere tropical wave.