Hurricane Karl (search) weakened slightly Monday and remained on a course that will keep it in the open ocean, a threat only to shipping, while Tropical Storm Lisa (search) developed far out in the Atlantic, forecasters said.

Karl, the seventh hurricane this season, had top sustained winds near 125 mph, down from about 135 mph Sunday. It could get stronger in the next day, according to the National Hurricane Center (search) in Miami.

At 5 a.m. EDT, Karl was centered about 1,055 miles east of the Lesser Antilles in the southeastern Caribbean and was moving west-northwest near 9 mph.

Lisa, the 12th named storm of the season, had top sustained winds of 50 mph and could get stronger in the next few days, hurricane center forecasters said. It was centered about 780 miles west of the Cape Verde Islands (search) and was moving west near 12 mph.

The two storms come on the heels of Tropical Storm Jeanne (search), which was near the southeastern Bahamas and drifting north away from the islands toward open seas, where it could gain strength.

Severe flooding brought by Jeanne killed at least 90 people in Haiti. Seven died in neighboring Dominican Republic and three died in Puerto Rico.

The hurricane season ends Nov. 30.