Guguwar Tropical Irina

Guguwar Tropical Storm Irina babbar guguwa ce ta wurare masu zafi wacce ta kawo iska mai ƙarfi da ruwan sama mai yawa a fadin Madagascar, Mozambique, da Afirka ta Kudu. Irina an dauke ta daya daga cikin tsarin da ya fi lalacewa a kakar 2011-12. Irina ta samo asali ne daga raƙuman ruwa na wurare masu zafi da ke arewacin Madagascar. Rikicin ya ci gaba da motsawa kudu kuma ya zama Irina a ranar 27 ga Fabrairu. Irina ta koma tare da gabar tekun Madagascar, ta haifar da ambaliyar ruwa mai tsanani wanda ya kashe rayuka 77. Har yanzu tsarin yana da lalacewar da ba a sani ba.  

 Tarihin yanayi 
A ranar 22 ga Fabrairu, wani yanki na rikice-rikice ya samo asali a Kudu maso Yammacin Tekun Indiya. Tsarin ya ci gaba da karfafawa cikin yankin matsin lamba jim kadan bayan haka. Tare da yanayi mai kyau, isasshen convection ya sami damar rufewa a kusa da cibiyar watsawa ta ƙasa, wanda ya ba da damar tsarin ya ƙarfafa cikin mummunan yanayi, a ranar 25 ga Fabrairu. A ranar 26 ga Fabrairu, RSMC La Reunion ta inganta tsarin zuwa Moderate Tropical Storm Irina yayin da yake ci gaba da karuwa. Koyaya, Irina ta sauka a Arewacin Madagascar bayan 'yan sa'o'i kaɗan kuma ta raunana cikin ɓacin rai. A ranar 27 ga Fabrairu, Irina ta fito daga arewa maso yammacin Madagascar. A cikin sa'o'i da yawa masu zuwa, Irina ta sami damar karfafawa dan kadan, yayin da guguwar ta matsa kusa da bakin tekun Madagascar. Daga baya a wannan rana, Irina ta sauka a karo na biyu a Madagascar, a wannan lokacin a Arewa maso Yammacin Madagascar. Marigayi a ranar 27 ga Fabrairu, Irina ta raunana cikin Yankin Yanayi, yayin da yake kan ƙasa. Da farko a ranar 28 ga Fabrairu, Irina ta fito daga yammacin gabar tekun Madagascar. Daga baya a wannan rana, Irina ta sake samun matsanancin yanayi na wurare masu zafi, kuma a hankali ta fara sake tsarawa. Koyaya, a rana mai zuwa, Irina ba ta iya sake dawo da ƙarfin Guguwar Tropical ba, saboda rashin tsari, kuma saboda cibiyar yaduwar guguwar ta koma baya, da kyau zuwa gabas na guguwar. Da farko a ranar 29 ga Fabrairu, Irina ta sami damar sake tsarawa sosai, kuma ta sake samun matsayin Moderate Tropical Storm. Bayan 'yan sa'o'i kadan, JTWC ta sanya Irina a matsayin Tropical Cyclone 12S. Yayin da Irina ta ci gaba da shirya, guguwar ta fara karfafawa a hankali, yayin da ta juya zuwa kudu, tare da yammacin gabar tekun Madagascar. A ranar 1 ga watan Maris, Irina ta kara karfi a cikin guguwa mai zafi, yayin da ta koma yammacin Madagascar. Marigayi a wannan rana, Irina ta kai ƙarfinta, tare da mafi ƙarancin matsin lamba na 979 mbars. Da farko a ranar 5 ga watan Maris, Irina ta raunana cikin Guguwar Tropical.

Tsarin ya yi karamin madauki daga bakin tekun Mozambique da Afirka ta Kudu kafin ya fara tafiya a arewa maso yammacin zuwa Madagascar har yanzu saboda yanayin jagorancin rauni. Daga baya a ranar 6 ga watan Maris, iska ta fara ɗaukar nauyinta a kan tsarin, kuma yawancin guguwar a cikin ruwan sama na waje sun lalace. Yayin da guguwar ta ci gaba da motsawa zuwa Kudancin Madagascar, iska ta cire ƙarin convection na guguwar, koda kuwa guguwar tana ci gaba da raunana. A ranar 7 ga watan Maris, Irina ta fara tsayawa. Da farko a ranar 8 ga watan Maris, ƙananan convection ne kawai suka rage, wanda aka lulluɓe a kusa da tsakiyar zagayawa. Da farko a ranar 9 ga watan Maris, idon Irina ya ɓace, yayin da guguwar ta ci gaba da raunana. Yayin da guguwar ta juya zuwa Afirka ta Kudu, ta rasa ƙungiyarta, saboda iska mai ƙarfi. Da farko a ranar 10 ga watan Maris, RSMC Reunion ta ba da shawara ta ƙarshe game da Irina, yayin da guguwar ta canza zuwa guguwa mai zafi. A cikin kwanaki 2 masu zuwa, raguwar Irina ta ci gaba da tafiya zuwa arewa maso yamma, tare da Irina ta raunana cikin raguwar raguwa a ranar 12 ga Maris. Kwanaki biyu bayan haka, ragowar Irina ta fadi a Lardin Gaza na Mozambique kuma ta ɓace.

 Shirye-shiryen da tasiri 
Da zarar Irina ta fara motsawa a bakin tekun Madagascar, ta kawo ambaliyar ruwa mai tsanani da rushewar ƙasa da yawa wanda ya yi kusan rayuka 72, tare da kusan 911 da ba a sanya su ba kusa da Antananarivo. Hukumomi da yawa a bakin tekun yamma sun ce guguwar ta lalata kusan gidaje 1,348 kuma ta haifar da rushewar ƙasa wanda ya toshe hanyoyi da yawa wanda ya ware ƙauyuka da yawa.

Adadin wadanda suka mutu a ranar 6 ga watan Maris ya kai 77, ciki har da akalla mutane 65 da suka mutu a tsibirin, mafi yawansu a yankin kudu maso gabashin Ifanadiana. An kashe masunta biyar daga bakin tekun Mozambique kuma akalla wasu mutane 3 a kudancin kasar lokacin da itace ya fadi a kan rufin su kuma ya rushe shi. Afirka ta Kudu ta ba da rahoton mutuwar mutane hudu yayin da raƙuman ruwa har zuwa 3 m suka buge tashar jiragen ruwa ta Durban kuma suka tilasta dukkan jiragen ruwa su nemi tsaro. Irina ita ce guguwa mafi muni a kakar, kuma ta dauki jimlar mutuwar kakar 2011-12 zuwa 164, mafi girma tun lokacin 2006-07.

 Manazarta