The storm will likely develop into a hurricane over the weekend, according to the National Hurricane Center in Miami.

Imelda and Humberto fuel dangerous surf, flooding and rip currents along the East Coast. Follow Newsweek's live blog.

But it’s the other system, set to dump rain on Puerto Rico and the Virgin Islands Wednesday and Thursday, that’s worth watching for Floridians. The hurricane center expects it to develop into a tropical depression around Friday or the weekend while it’s over the Bahamas.

A future storm named Imelda could affect the Southeast U.S. early next week, but there is plenty of uncertainty. Here are four concerns this meteorologist is watching.

Forecasters are tracking a pair of tropical waves in the Atlantic Ocean that could develop over the coming days. Here's what to know.

Two tropical cyclones are barreling through the Atlantic on a potential collision course — and in the unlikely event that they clash, a freak weather event merging them into one monster storm could wreak havoc along the East Coast.

Although no immediate land threat exists from either Gabrielle or the forming Humberto, the increase in tropical activity underscores how quickly conditions in the Atlantic basin can change. September is historically the most active month of the hurricane season, which officially runs through November 30.

Understanding how storms form helps explain why forecasters watch ocean temperatures and wind patterns so closely.