Bertha weakens to a tropical storm : NHC

(Reuters) - Bertha, the second hurricane of the 2014 Atlantic season, has weakened to a tropical storm, the U.S. National Hurricane Center (NHC) said on Tuesday.

The storm is located about 475 miles (765 km) west of Bermuda, with maximum sustained winds of 65 miles per hour (100 km per hour), the NHC said in an advisory.

"Bertha will pass about midway between the U.S. east coast and Bermuda later this morning," the Miami-based weather forecaster said.

(Reporting by Anupam Chatterjee in Bangalore; Editing by Robin Pomeroy)