Hurricane Erin was downgraded to a Category 3 hurricane early Sunday as a tropical storm warning was issued for the Turks and Caicos Islands and winds and heavy rains whipped the Virgin Islands and Puerto Rico.

Hurricane Erin weakened slightly Saturday night but is still a formidable Category 4 storm north of Puerto Rico. The 11 pm advisory from the National Hurricane Center now has Erin with winds of 140 mph,

Hurricane Erin has weakened slightly to a Category 4 storm while positioned northeast of Puerto Rico and is on course to brush along the U.S. East Coast.