Tropical Storm Dexter has picked up some strength as it continues to drift away from the northeastern U.S. coast, while two other systems continue to brew in the Atlantic Ocean.

The National Hurricane Center said in an advisory on Wednesday morning, Aug. 6 , that Dexter is currently located about 405 miles south-southeast of Halifax, Nova Scotia. The storm's maximum sustained winds have increased to about 45 mph with higher gusts.

"Strengthening is forecast during the next 48 hours while the system becomes an extratropical cyclone," hurricane center forecasters said Aug. 6, adding that Dexter is expected to continue moving toward the east-northeast.

Elsewhere in the Atlantic, the NHC said a weak surface trough located several hundred miles off the southeastern U.S. coast is producing

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