The Bahamas is being battered by a category 4 hurricane. CNNs Jennifer Gray has the latest forecast and where the storm could be heading next.brPowerful Hurricane Joaquin has been upgraded to a category 4 hurricane. ------------------------------------ STORY LINK: .brThe National Hurricane Center in Miami says Hurricane Joaquin has strengthened again into a Category 4 storm. The hurricane had dropped to a Category 3 on .brThe U.S. East Coast is bracing for Hurricane Joaquin, which has strengthened to a Category 2 hurricane. CNNs Jennifer Gray has the latest.