MIAMI — The U.S. National Hurricane Center says the storm was centered Wednesday afternoon about 745 miles (900 kilometers) west of the Azores, a Portuguese island chain.   

Rebekah has maximum sustained winds of 45 mph (73 kph) and is moving east at 13 mph (21 kph).    

Forecasters expect the storm to weaken to a post-tropical cyclone as it approaches the Azores on Thursday or Friday.    

There are no coastal watches or warnings in effect.

Subtropical Storm Rebekah
Subtropical Storm Rebekah