A tropical storm that formed Friday off the Pacific coast of Mexico has already weakened into a tropical depression, though it could still bring possible flash flooding to parts of the country, forecasters said.

A tropical wave has been designated as Invest 91L. It's likely to become a tropical depression by the weekend.

Hurricane Erin is expected to grow significantly larger. A tropical depression could form later this week or over the weekend in the Atlantic. See whether Invest 99L could develop. The National Hurricane Center is tracking three systems in the Atlantic ...

A tropical wave in the far northwest Caribbean will move into the far southwest Gulf/Bay of Campeche and could develop into a tropical depression by the weekend. NORTHWEST CARIBBEAN: Sign up for our Newsletters The National Hurricane Center (NHC) has ...

MIAMI -- A tropical depression in the Gulf of Mexico is expected to strengthen to a tropical storm as it moves toward the site of the oil spill off Louisiana's coast. The depression has maximum sustained winds near 35 mph early Wednesday but is expected to ...