Subtropical Storm Josephine forms in the Atlantic on October 21, marking it the 10th named storm of the Atlantic Hurricane Season.

Subtropical Storm Josephine became a powerful extratropical storm off the U.S. coast Thursday while the National Hurricane Center kept its eye on another system also in the Atlantic.

Although there are no coastal watches or warnings in effect, the storm's proximity means high winds, dangerous surf and coastal flooding are possible over the next few days along portions of the U.S. ...