MIAMI (October 3, 2013)--Tropical Storm Karen was churning Thursday in the Gulf of Mexico, and a hurricane watch was in effect along the Gulf Coast from Louisiana to Florida.
The late-season storm formed Thursday morning and was about 500 miles south of the mouth of the Mississippi River with maximum sustained winds of 60 miles per hour, the National Hurricane Center in Miami said.
The hurricane watch was in effect from Grand Isle, La., to Indian Pass in the Florida Panhandle.
A tropical storm watch also was in effect for parts of the Louisiana coast west of Grand Isle, including the metro New Orleans area and Lake Pontchartrain.
Karen was moving north-northwest at 13 miles per hour and could be at or near hurricane strength by Friday.