NEW : Early storms this year do n't portend a more active season , forecasters say . Up to 15 named Atlantic storms are expected , and one to three major hurricanes . A major hurricane packs winds well over 100 miles per hour . Uncertainty over formation of an El ##f weather pattern affects the region .
NEW : Early storms this year do n't portend a more active season , forecasters say . Up to 15 named Atlantic storms are expected , including one to three major hurricanes . A major hurricane packs winds well over 100 miles per hour . Uncertainty over formation of an El Nino weather pattern affects the prediction .