hurricane hurricane intense long lived hurricane formed august fifth tropical cyclone fourth named storm hurricane second major hurricane atlantic hurricane season formed august southern atlantic_ocean took general northwesterly path turning northward central atlantic storm characterized numerous fluctuations intensity reached winds corresponding category status saffir simpson hurricane scale separate occasions hurricane bypassed island bermuda southeast august ultimately southeastern newfoundland strong winds dissipated cold waters east greenland little effect land extensively researched subject weather modification experiment seeded silver meteorological history disturbance associated tropical wave strengthened tropical depression august system significantly organized august intensified tropical storm utc day designation moving west northwestward approximately mph predicted gradually gain power attained category hurricane strength august turned northwest continued mature utc day achieved winds corresponding category saffir simpson hurricane scale august intensified category status making major hurricane storm quickly downgraded august minimal hurricane force roughly time turned west maintained general northwesterly path abrupt weakening result experiment carried storm attempt deteriorate later day begun resumed category intensity august despite minor magnitude day point cyclone acquired peak winds mph shortly lowest recorded barometric pressure fell storm turned northward august eventually curved northeastward weakened category strength fourth time major hurricane intensity hurricane passed southeast bermuda believed presence nearby hurricane emerged atlantic united_states august likely ended west closer island maintained severity august continued generally northeast august storm began weakening trend turned north day storm having weakened category status southeastern tip newfoundland began lose tropical characteristics accelerated northeast weakened tropical storm early august moved increasingly cold waters dissipated east greenland impact subject experiment called attempted weaken tropical cyclones silver storm provided excellent opportunity test ways perfect storm threaten land passed range aircraft intense distinct eye august august thirteen planes flew storm monitor seed day fell second day fell changes consistent working hypothesis results encouraging greatly expanded research program planned conclusions need frequent close hourly intervals remained sea path result caused little damage storm little impact island bermuda passed south later winds mph recorded eastern newfoundland
Hurricane Debbie (1969)