Tropical Storm Irene (search) was moving on a course that could take it away from the East Coast on Sunday, forecasters said.

At 11 a.m. EDT, Irene was centered about 340 miles east-southeast of Cape Hatteras, N.C., or about 310 miles west-northwest of Bermuda, the National Hurricane Center said.

The storm, which had been heading northwestward toward the East Coast, was moving at 12 mph on a path that had swung toward the north-northeast, and a turn more toward the northeast was expected over the next day, meteorologists said.

Irene had maximum sustained wind blowing at 65 mph.

Elsewhere, the Atlantic hurricane season's 10th tropical depression was poorly organized and appeared to be dissipating, just one day after it developed.

The depression was centered located about 1,040 miles east of the Leeward Islands, with sustained wind estimated at 30 mph. The hurricane center said it planned no more advisories on the depression unless it strengthens.

Normally, there are only two named storms by this time in the Atlantic hurricane season, which began June 1 and ends Nov. 30. Irene developed Aug. 7, weakened to a tropical depression Monday and then regained tropical storm strength Wednesday.