atlantic hurricane season atlantic hurricane season busiest officially began june lasted november dates conventionally period year tropical cyclones form atlantic basin season active terms named storms weak stayed sea cyclones tracked northwest subtropical atlantic west 50th near eastern coast united_states mid august early october damaging storm hurricane diana caused million dollars damage north_carolina diana hurricane strike nuclear power plant incident major hurricane strike east_coast nearly years note lasted official end season downgraded named storm december damage overall tropical cyclones totaled million usd season summary storms season subtropical characteristics point track subtropical storm tropical storm hurricane hurricane hurricane season activity reflected cumulative accumulated cyclone energy ace rating classified near normal ace broadly speaking measure power hurricane multiplied length time existed storms long time particularly strong hurricanes high aces ace calculated advisories tropical systems exceeding knots mph tropical storm strength officially subtropical cyclones excluded total figure includes periods storms subtropical phase storms tropical depression june upper level low caused thunderstorm development florida coast caused formation tropical depression moving westward depression moved causing total inches rainfall florida main thunderstorm activity concentrated north center dissipated tropical cyclone june moving florida panhandle small remnant low continued moving westward inland gulf_coast causing occasional redevelopment thunderstorm activity system moved louisiana thunderstorm activity low pressure area dissipated june tropical depression upper level low moving southern gulf mexico spawned area thunderstorm activity mexican june thunderstorm area moved northwest intensity larger area deeper convection early morning june surface low formed system considered organized tropical depression second season located southeast texas june vertical wind shear west southwest halted development tropical depression began general weakening trend continued past landfall point northeast mexico early morning june system completely dissipated tropical depression tropical depression formed july moved westward producing rainfall inches barbados july depression dissipated july commercial fisherman reported missing near subtropical storm weak generated low pressure system organized subtropical depression north bermuda august depression headed northeast strengthened subtropical storm believed merged august history subtropical storm entirely certain satellite images largely unavailable failure unit goes east system remained fringe existence winds mph reported southwest coast newfoundland addition weather office island reported rainfall tropical storm arthur season named storm occurred later usual forming august arthur formed east windward_islands tracked generally northwest downgraded depression september negatively impacted vertical wind shear dissipated days later arthur minimal tropical storm caused significant weather land tropical storm short lived tropical storm formed mid atlantic august close proximity east arthur storm took path north northeast merging cold september approached land caused reported damage tropical storm second storm formed august non tropical low strengthened east_coast united_states traveled east northeast strengthened gradually extratropical merged system coast newfoundland september tropical depression seven tropical wave moved central_america far eastern north pacific ocean august system moved westward signs development september upper level low north gulf_of_mexico caused area thunderstorms form south mexican coastline upper trough developed southern plains united_states slowly lured northern portion increasingly large disturbance northward southern portion moved westward developing hurricane marie short marie acted source vertical wind shear west system halting development september disturbance emerged southwest gulf_of_mexico consolidated smaller system organization classified tropical depression seventh season depression moved north northwest northeast mexico afternoon september dissipating completely september hurricane diana september extratropical cyclone organized tropical storm diana north bahamas diana proved difficult forecast initially moving westward turned north paralleled coastline september storm reached hurricane strength continued intensify category hurricane diana moved north northeast performed small anti cyclonic loop striking near minimal category hurricane september weakened tropical storm diana curved sea headed northeast extratropical near newfoundland september damage estimates set million indirect deaths associated diana diana hurricane strike nuclear power plant light nuclear power plant recorded sustained hurricane force winds damage facility tropical storm origins unclear area persistent organized storms formed strengthened tropical storm september rapidly intensified wind speeds reaching mph hours following strengthening dissipated quickly area thunderstorms day remnants moved land near port veracruz tropical storm september defined tropical wave exited coast africa day rapidly organized tropical depression afternoon september depression attained tropical storm strength given turned northwest passed near cape_verde people killed country continued northwest west northwest september continued organize period satellite imagery indicated peaked winds mph minimum surface pressure mbar inhg passed cape_verde islands weather stations reported miles hour winds tropical depression force period september turned westward began encounter strong upper level wind shear caused dissipate september tropical storm spent life organized tropical depression formed september open atlantic south bermuda depression moved north motion stalled bermuda september day later depression strengthened tropical storm named tropical headed northeast absorbed september hurricane large frontal system spawned subtropical depression early september miles east bermuda ship satellite data confirmed development indicated system intensified subtropical storm later september initially cyclone moved south southwest september turned west day hurricane_hunters reported system transitioned tropical cyclone named tropical storm newly tropical storm quickly intensified turning northwest late september attained hurricane status miles southeast bermuda hours reaching hurricane status began sharp weakening trend passing east bermuda september minimal tropical storm subsequently executed clockwise loop southwest intensity fluctuated slightly subsequent days regained intensity september turning west later north storm passed west bermuda storm weak island reported winds mph accelerated northeast moving rapidly north atlantic absorbed larger extratropical storm late october northwest azores tropical storm tropical depression formed september southeastern bahamas depression headed west upgraded tropical storm central bahamas september struck coast near florida retaining tropical storm strength curved northeast emerging water near jacksonville florida continued northeast absorbed october total damages estimated dollars death reported hurricane named storm october northeast puerto_rico briefly moved west turned north stayed away coast large storm sustained tropical storm winds measured passed latitude roughly level norfolk virginia curved southeast northeast continued path cyclonic loop beginning october extratropical storm lost identity october hurricane caused wave damage coastal areas primarily posed threat shipping lanes north_atlantic offshore crewmen disabled high waves estimated exceeded produced hurricane people ship quickly rescued issuing distress signal nearby tanker vessel massachusetts man drowned falling boat amidst large swells produced storm long_island new_york parts new_jersey tides normal resulted minor coastal flooding tropical depression seventeen system recognized seventeenth tropical depression season national_hurricane_center season ended upper level low spurred development low east bahamas october system tracked westward limited shower thunderstorm activity crossing florida october moving gulf_of_mexico system moved north central gulf deep convection began develop near center expanding intensity coverage near landfall extreme southeast mississippi small system accelerated rapidly north northeast ahead approaching cold moving central linking weak extratropical cyclone cyclone moved coastal new_england hurricane forming broad area low pressure november maintained northeast movement path making landfall extreme eastern puerto_rico passed north leeward_islands resulting strong southwesterly winds rough seas attained hurricane status reached peak winds mph extratropical cooler waters november storm dropped heavy rainfall puerto_rico causing minor flooding light damage caused heavy marine damage leeward_islands including ships experienced heavy damage damage storm totaled million usd hurricane killed tropical depression nineteen low pressure system formed east florida november rode east_coast united_states producing heavy rain curving sea november storm left fatality million usd damage evidence november storm subtropical cyclone east bermuda remnants cyclone contributed late november easter hurricane hurricane atlantic tropical cyclones record reach hurricane status month december developed subtropical cyclone originated frontal trough south bermuda december tracked southeastward northward slowly attaining tropical characteristics hurricane december turned south southwest briefly threatening northern caribbean islands weakening dissipating near coast dominican_republic longest lasting tropical cyclone outside atlantic hurricane season strongest hurricane form month december briefly threatened pass leeward_islands minimal hurricane passing area dissipating tropical depression produced light rainfall reported damage storm names following names named storms formed north atlantic names retired list names season time names naming change previously names assigned marked gray retirement retire names season
1984 Atlantic hurricane season