 Late in its duration , Gert passed just southeast of Newfoundland before becoming extratropical , producing wave heights of 77 @.@ 4 ft ( 23 @.@ 6 m ) offshore and 30 ft ( 9 m ) onshore . In St. Bride 's along the Avalon Peninsula , a large wave severely damaged a wharf , destroying five boats and damaging 45 others . Along the wharf , a wave swept three people into the ocean , hospitalizing one of them . The wharf required $ 2 million ( 1999 CAD , $ 1 @.@ 9 million 1999 USD ) in repairs , forcing its closure . Further west , high waves damaged a fish plant in Lord 's Cove . Gale force winds extended across southeastern Newfoundland , and in the Grand Banks a station reported winds of 74 mph ( 120 km / h ) . Onshore , the winds downed trees and caused power outages , primarily in the St. John 's area . In addition , the adverse conditions from Gert prompted the cancellation of flights to and from St. John 's International Airport . 
