tropical cyclone produced heavy rains flooding states southwestern twentieth named storm twelfth hurricane annual hurricane season developed tropical wave september southwest acapulco guerrero mexico initially tropical depression system strengthened tropical storm early following day favorable atmospheric conditions continued intensify wind shear sharply increased storm approached large mid- upper level trough despite cyclone deepened hurricane september peaking sustained winds mph shortly wind shear quickly took toll hurricane weakening tropical storm early september hours later degenerated post tropical low pressure area offshore guerrero low degenerated trough later september eventually dissipated october anticipation storm tropical cyclone warnings watches issued states guerrero flooding occurred particularly guerrero areas near acapulco observed rainfall landslides homes municipality flooded remnants caused severe flooding homes vehicles damaged city total damage state reached million million meteorological history tropical wave emerged atlantic_ocean west coast africa september tracking westward wave split portions slower moving northern portion ultimately developing september southern portion crossed venezuela colombia emerged pacific large area deep convection began form defined low pressure area developed september organized tropical depression utc day situated southwest acapulco guerrero hours later banding features defined intensity estimates dvorak technique showed slight increase intensity depression classified tropical storm accordingly named national_hurricane_center nhc time storm moving slowly northward influence large mid- upper level trough located favorable environment sea surface temperatures low vertical wind shear strengthened steadily early september nhc noted rapid intensification possible neared base trough westerly vertical wind shear increased rapidly causing low level circulation center partially exposed despite hostile wind shear cyclone reformed central dense overcast intensified hurricane utc september mid level eye feature seen microwave satellite imagery operationally nhc upgraded hurricane hours later reconnaissance aircraft flight observed hurricane force winds utc attained peak intensity maximum sustained winds mph minimum barometric pressure mbar hpa inhg computer forecast models indicated storm pass southwestern mexican coast september september turning north northeast influence aforementioned trough began weaken soon peak intensity deep convection displaced east strong westerly shear low level circulation center fully exposed span hours late september cooler waters decayed deep convection prompting nhc tropical storm utc september continuing steadily weaken degenerated post tropical low day later west southwest acapulco producing gale force winds shallow system turned westwards low level flow eventually opened trough hours later west acapulco low closed october failed produce sufficient organized deep convection qualify tropical cyclone turned north southern gulf california dissipated reaching coast remnant moisture continued caused flooding preparations impact preparation arrival classes suspended acapulco region standby deal incidents occurring zones guerrero government mexico issued multiple watches warnings coastal communities guerrero utc september tropical storm watch effect west tropical storm warning acapulco east hurricane warning discontinued weakened moved away region cancelled early september south mexico produced heavy rains mainly state guerrero areas reported rain september october coastal areas near west acapulco received river levels rose state emergency declared municipalities concluded september landslides occurred occurred homes flooded water temporary shelters opened closed moved remnants moved northwestern mexico heavy rains flooding rendered people homeless state emergency declared municipalities flooding hit hardest damaged homes vehicles people sustained injuries wall collapsed mexico highway closed floods total estimated damage state amounted million million
Hurricane Marty (2015)