Hurricane Erin weakened to a Category 3 hurricane Sunday as its outer bands continued to lash the Virgin Islands and Puerto Rico with heavy rains and tropical-storm force winds.

Erin strengthened into a Category 1 hurricane with sustained winds of 85 mph on Friday evening and is more than 300 miles east of the northeastern Caribbean’s Leeward Islands, according to the Nation...

Erin is expected to continue to fluctuate in intensity as it undergoes an eyewall replacement cycle.