Karl strengthens from depression to tropical storm: U.S. NHC

(Reuters) - A hurricane hunter aircraft has found that Karl has strengthened in force from a depression to a tropical storm again, the U.S. National Hurricane Center said on Thursday. Karl, which had previously weakened to a depression, is located about 480 miles (770 km) south-southeast of Bermuda with maximum sustained winds of 40 miles per hour (65 km/h), the Miami-based weather forecaster added. (Reporting by Harshith Aranya in Bengaluru; Editing by David Gregorio)