Hurricane Gabrielle has intensified to a Category 4 storm, prompting alerts for the Azores as it moves towards Bermuda. Forecasters predict changes in wind strength and potential impacts on the U.S. East Coast.
Hurricane Erin has weakened to a Category 3 storm but is expected to re-intensify. Heavy rains and flash flood warnings are in effect for Puerto Rico and the U.S. Virgin Islands as the storm moves northward.
