typhoon typhoon record super pacific typhoon season formed central pacific_ocean september southwest hawaii typhoon western pacific deepened september increasing winds mph mph hour period afterward slowly weakened passing east turned northeast struck japan winds mph affected people killed thousands houses flooded destroyed offshore south_korea winds waves wrecked boats boat went missing crew people dissipated september northern pacific_ocean near international date line meteorological history origins typhoon unusually eastward extension monsoon trough late august tropical disturbance organized southwest hawaii slowly organized september initiated advisories tropical depression miles southwest slightly east international date line depression quickly attained tropical storm status gave meaning oliver hawaiian language moderately powerful ridge persisted north caused slow west west northwest track water temperatures slightly warmer usual favorable upper level environment strengthening initially somewhat disorganized satellite imagery september crossed international date line multiple entering western pacific_ocean began issuing advisories system despite favorable conditions intensification slow reached typhoon status winds mph september prior time existed weak tropical cyclone formed similar location south pacific hours reaching typhoon status began undergo unexpected explosive deepening hour period assessed typhoon nearly doubling intensity mph min winds pressure dropped mbar minimum mbar based estimated intensity classified super typhoon official agency western pacific assessed reaching peak mph min winds pressure mbar time satellite imagery indicated possible eyewall small scale feature found eyewall intense tropical cyclone additionally concentric developed center typically occur strong maintaining peak intensity hours gradually weakened continued west northwest passed september typhoon slowed north okinawa turned northeast japan weakened typhoon moved ashore winds mph late september weakened tropical storm strength crossing japan deteriorated tropical depression status september september issued final advisory eastern portion maintained advisories storm crossed northern japan accelerated open pacific_ocean september dissipated near international date line south impact records weakening peaking intensity passed miles north northern islands sustained winds island reached mph gusts mph winds downed trees radio antenna left island temporarily contact outside world japanese island landfall weakened typhoon thousands homes flooded dozens destroyed slow movement caused heavy rainfall created killing people officials issued evacuations flooding warnings typhoon destroyed buildings damaged damage estimated million usd japan caused fatalities displaced total people total damage amounted billion million usd offshore south_korea coast winds strong waves wrecked vessels people reported missing ship super western pacific tied previous record typical typhoon season super period heightened activity result powerful events record track unusual origin cyclone central pacific_ocean path japan typhoon season undergo explosive deepening decrease barometric pressure mbar hour period hours hours pressure dropped mbar averages mbar hour values usually estimated western pacific dvorak technique retired low activity central pacific_ocean years
Typhoon Oliwa