(Reuters) - Tropical Depression One has strengthened into Tropical Storm Arlene in the North Atlantic, the U.S. National Hurricane Center said on Thursday.

Arlene is moving toward the west-northwest near 25 miles per hour (41 km/h), and this general motion is expected to continue until dissipation on Friday, the Miami-based weather forecaster said.

(Reporting by Karen Rodrigues in Bengaluru; Editing by Chris Reese)