Hurricane Erin further weakened to a Category 3 storm early Sunday morning as it churned over the Atlantic Ocean north of the ...

The storm will remain a major hurricane through the middle of the week, according to the National Hurricane Center.

Storms that ramp up so quickly complicate forecasting and make it harder for government agencies to plan for emergencies.

U.S. shores are unlikely to see a direct hit, but a strong offshore hurricane can produce massive and dangerous waves well away from its center.