Guguwar Belna

**Guguwar Tropical Belna** wata guguwa ce mai karfi wacce ta yi kasa a arewa maso yammacin Madagascar a watan Disamba na 2019, ta zama ta farko da ta fara yin hakan tun Hellen a cikin 2014. Belna's precursor-an farko m trough na low matsa lamba yammacin Seychelles — was formally sanya shi a matsayin wani yanki na damuwa weather on 2 Disamba a lokacin da wani m lokaci tropical Ocean. Rikicin ya ci gaba a hankali a cikin kwanaki da yawa, yana bin sannu a hankali zuwa yamma. Météo-Faransa (MFR) ya inganta tsarin zuwa yanayin zafi a ranar 5 ga Disamba sannan zuwa hadari mai zafi daga baya a wannan rana. Belna ta kai karfin guguwar mai zafi a ranar 7 ga Disamba yayin da ta fara juyawa zuwa kudu maso yammacin kasar, tana yin kololuwar iskar da ta kai kilomita 155/h (95 mph) kafin ta yi karfi a washegari yayin da ta wuce gabas da Mayotte. A ranar 9 ga Disamba, Belna ta sake ƙarfafawa tare da sake samun iskar da take yi a lokacin da take faɗuwa kusa da Soalala kusa da gabar tekun arewa maso yammacin Madagascar. Guguwar ta yi rauni kafin daga bisani ta bazu a kudancin Madagascar a ranar 11 ga watan Disamba.

A cikin ma'aikatar Mayotte ta Faransa a ketare, mutane kusan 15,000 ne suka ƙaura zuwa matsuguni kafin guguwar. An dakatar da ayyuka da dama na sashen da suka hada da babban filin jirgin sama da jiragen ruwa. Guguwar daga ƙarshe ta wuce kilomita 100 (62 mi) gabas da Mayotte tare da ƙananan tasiri. Ruwan sama mai karfi daga Belna ya yi tasiri a arewacin Madagascar. Soalala da Antsiranana sun sami ambaliyar ruwa mai yawa. Guguwar iska mai karfi a Soalala ta lalata rufin 80% na gidaje da ofisoshin gwamnati. Gabaɗaya, an sami asarar rayuka tara da sama da raunuka 2,000 da ke da alaƙa da Belna. An kiyasta barna a Madagascar a kan dalar Amurka miliyan 25.

## Tarihin yanayi
MFR ta fara bayyana yuwuwar ci gaban guguwa mai zafi a cikin labaransu na yau da kullun a ranar 25 ga Nuwamba, lura da karuwar ayyukan shawa a yammacin Seychelles. Taimaka ta hanyar wucewar igiyar Kelvin da taga mai kyau a cikin Madden-Julian oscillation, wani babban ramin ƙaramin matsin lamba ya fara yin tsari a cikin ayyukan guguwa, yana faɗaɗa cikin equator. Hasashe daga nau'ikan kwamfuta sun kasance cikin rashin jituwa game da makomar tsarin, mai rikitarwa saboda ci gaban rikice-rikicen yanayi na wurare masu zafi a arewa maso yammacin Tekun Indiya tare da wannan titin. An gano yanayin zagawar iska mai nisa kilomita 263 (163 mi) kudu da Mahe, Seychelles a ranar 29 ga Nuwamba, daga juzu'i.[6] A cikin kwanaki masu zuwa, wannan yanayin ya tsananta a cikin yanayin da ya dace don haɓaka wurare masu zafi. Météo-Faransa ta ayyana tsarin a matsayin yankin tashin hankali a ranar 2 ga Disamba; a lokacin tsarin ya karkata zuwa yamma daga tushensa. Duk da cewa guguwar ta kasance mafi tsari da kuma yanayin da ya dace don ƙarfafawa, tun da farko filin iskar guguwar ya kasance mai tsayi kuma ruwan sama ya kasance a arewacin tsakiyar guguwar. Rikicin ya zama bakin ciki na wurare masu zafi a ranar 5 ga Disamba, wanda ya samu halartar karuwar ruwan sama da kuma dawowar convection a tsakiyar wurare dabam dabam; a 18:00 UTC a wannan rana, an inganta tsarin zuwa matsakaicin Tropical Storm Belna.

An haɓaka Belna zuwa matsananciyar guguwa mai zafi da wuri a ranar 6 ga Disamba.[9] Kusan lokaci guda, idon da ya rufe gajimare ya bayyana a takaice a cikin hoton tauraron dan adam na microwave. Saboda wani yanki mai ƙarfi na matsin lamba zuwa gabas, Belna ya fara karkata daga farkon tafiyarsa zuwa yamma zuwa yanayin kudu maso yamma. Bayan ɗan taƙaitaccen lokaci na ƙarfafawa, Belna's tsakiya mai zurfi ya kasance ba canzawa sosai a cikin 6 Disamba kafin alamun ci gaba da haɓaka ya bayyana a ƙarshen rana, sannan ci gaban wani ido 9-19 km (5.6-11.8 mi) a fadin. Tare da ganin guguwar ta zama mafi kyawun ma'anar ma'anar, MFR ta haɓaka Belna zuwa guguwa mai zafi da wuri a ranar 7 ga Disamba. An gano hasumiya masu zafi a saman kuma a cikin radius na iskar guguwar, wanda ke ba da shawarar farawa da saurin haɓakawa. Duk da haka, kasancewar busasshiyar iska a tsakiyar matakan troposphere zuwa yankin kudu maso gabashin guguwar ya hana Belna haɓaka sosai. Da karfe 18:00 UTC a ranar 7 ga Disamba, iskar Belna ta tashi sama da kilomita 155/h (95 mph) kafin ta yi ta jujjuyawa da dan karamin karfi a ranar da ta biyo baya. Tsarin tsarin ya lalace sosai cikin ɗan gajeren lokaci, wanda busasshen iska da bushewar iskar arewa suka haifar.

## Manazarta