Subtropical Storm Melissa has gained a little strength as it swirls over the central Atlantic.
The storm's maximum sustained winds late Tuesday were near 65 mph. Additional strengthening is expected and the U.S. National Hurricane Center says the storm could transition to a tropical storm overnight.
Melissa is centered about 645 miles east of Bermuda and is moving northeast at 16 mph.
Melissa will not pose any direct threat to land in the western Atlantic as it drifts northward this week, but large swells from the storm will continue to affect parts of the northern Leeward Islands, Puerto Rico, Hispaniola and the southeastern Bahamas. The swells can bring life-threatening surf and rip currents.