Tropical Storm Katia, latest of 2011 hurricane season

Tropical Storm Katia formed over the open Atlantic Ocean on Tuesday, becoming the 11th named storm of the 2011 hurricane season, U.S. forecasters said. The U.S. National Hurricane Center said Katia was about 535 miles southwest of the southernmost Cape Verde Islands and was moving quickly west northwestward across the Atlantic. It was too soon to gauge the storm’s potential threat to the U.S. East Coast or energy interests in the Gulf of Mexico with any confidence.