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.

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,

While a Gulf disturbance that moved into Texas on Friday seems to have run its course, Hurricane Erin in the western Atlantic intensifies.