Tropical Storm Chris started moving away from the southeast US coast on Tuesday and heading northeast, possibly strengthening into a hurricane later in the day, the National Hurricane Center (NHC) said.

Chris, the third named storm of the 2018 Atlantic hurricane season, is 300 kilometers (200 miles) southeast of Cape Hatteras, North Carolina, and has maximum sustained winds of 110 kph (70 mph), the NHC said in its 1500 GMT public advisory.

"Chris is forecast to strengthen into a hurricane later today when it moves over warmer waters, and some additional strengthening is expected through Wednesday night. Chris is forecast to become a strong post-tropical cyclone by Thursday night or early Friday," the NHC said.

The storm is moving northeast at 15 kph (9 mph) and is expected to stay on this track.

The NHC said "interests along the coast of North Carolina and in Atlantic Canada should monitor the progress of" Chris.

The 2018 Atlantic hurricane season, which started on June 1, has seen the formation of three storms.

Beryl became a Category 1 hurricane but has now broken up over the Caribbean.

"The remnants of Beryl are producing gusty winds and areas of heavy rain over much of Hispaniola, the Turks and Caicos, and adjacent Atlantic waters. This system is expected to move west-northwestward across the rest of Hispaniola today and over the southeastern Bahamas this evening. Little development is expected during the next day or so due to land interaction and unfavorable upper-level winds," the NHC said in its Tropical Weather Outlook.