BP removes some non-essential personnel from Thunder Horse, Na Kika platforms ahead of storm

BP said on Monday that it had removed some non-essential personnel from its Thunder Horse and Na Kika platforms in the U.S. Gulf of Mexico as a precaution ahead of an approaching storm.

Tropical storm Bertha was located about 170 miles (275 km) southeast of Mobile, Alabama, and packed maximum sustained winds of 50 miles per hour (85 km/h).

The U.S. National Hurricane Center in its latest advisory said that tropical storm watches and warnings remain in effect for portions of the north Gulf coast.