Aug. 24 (UPI) -- The season's sixth named storm, Tropical Storm Fernand, weakened slightly overnight in the Atlantic Ocean and is expected to dissipate before the end of the work week, forecasters said Tuesday.

The tropical storm had maximum sustained winds of 45 mph while located about 635 miles east-northeast of Bermuda and moving northeast at 14 mph, the National Hurricane Center said in its 5 a.m. AST advisory.

Tropical storm-force winds extend outward about 80 miles from the storm's eye, the NHC said.

"Continued weakening is likely, and Fernand is likely to become a post-tropical cyclone later tonight or early Wednesday before dissipating on Thursday," it said.

No coastal watches or warnings were in effect, and the storm likely will remain at sea throughout its life.