Tropical Storm Dora Nears Hurricane Level as Bret Weakens

Tropical Storm Dora strengthened in the eastern Pacific and is forecast to become a hurricane, while Bret weakened in the Atlantic on a course out to sea, the U.S. National Hurricane Center said.

Dora, 295 miles (475 kilometers) south of Acapulco, Mexico, had sustained winds of 70 miles per hour as of 5 p.m. East Coast time, the Miami-based center said in an advisory. Dora is expected to become a major hurricane, then weaken before brushing past the southwestern tip of the Baja Peninsula.

Dora’s storm-force winds extend outward as far as 125 miles, the center said. “Life-threatening” surf swells are expected to affect the coast of southwestern Mexico as the storm moves west-northwest, parallel to the coast, at 17 mph.

Bret, the second tropical storm of the Atlantic hurricane season, weakened as it moved northeast away from the Bahamas, the center said in a separate advisory. The system is forecast to diminish during the next 48 hours.

Bret was 330 miles south of Cape Hatteras, North Carolina, and was moving north-northeast at 8 mph, with sustained winds of 50 mph.

“Bret is likely to remain well offshore of the southeastern coast of the U.S.,” the center said.

In an outlook issued at about 8 p.m. New York time today, the center identified a low-pressure area about 175 miles east- northeast of Bermuda producing “disorganized showers and thunderstorms. The system, moving at about 20 mph, has a 20 percent chance of becoming a tropical cyclone in the next two days, the center said.

‘‘Environmental conditions are marginally conducive for development,’’ according to the outlook.

A disturbance becomes a named storm when sustained winds reach 39 mph. A storm reaches hurricane status when winds increase to 74 mph, and a major storm level when winds hit 111 mph.

To contact the reporters on this story: Lananh Nguyen in London at lnguyen35@bloomberg.net; Charlotte Porter in New York at Cporter11@bloomberg.net

To contact the editor responsible for this story: Dan Stets at dstets@bloomberg.net

Press spacebar to pause and continue. Press esc to stop.

Bloomberg reserves the right to remove comments but is under no obligation to do so, or to explain individual moderation decisions.

Please enable JavaScript to view the comments powered by Disqus.