Karen should make landfall Saturday night somewhere along the U.S. Gulf Coast.
Tropical Storm Karen has formed in the Caribbean, the National Hurricane Center reported Thursday morning, becoming the 11th named storm of the Atlantic hurricane season.
As of 8 a.m. ET, the storm had winds of 60 mph. It was located about 500 miles south of the mouth of the Mississippi River and was moving to the north-northwest at 13 mph.
There is a chance Karen becomes a hurricane before making landfall, reports AccuWeather. A tropical storm becomes a hurricane when its winds reach 74 mph.
Hurricane and tropical storm watches have been posted for the U.S. Gulf Coast from Florida to Louisiana.
A hurricane watch is in effect from Grand Isle, La., to Indian Pass, Fla., while a tropical storm watch is in effect for metropolitan New Orleans, Lake Ponchartrain and Lake Maurepas, as well as the Gulf Coast from west of Grand Isle to Morgan City, La.
A hurricane watch means that hurricane conditions are possible within the watch area, while a tropical storm watch means tropical storm conditions are possible.
The storm should make landfall somewhere along the Gulf Coast by Saturday night.