"Yanzu ne lokacin da za a fara shiri don yiwuwar tasirin ambaliyar ruwa a tafkin Mendenhall da kogi."
Tafkin 'Yan Kunar Bakin Wake ya fara malala a saman madatsar ruwan kankara kuma mutanen da ke ƙasa da Mendenhall Glacier za su shirya tsaf don fuskantar ambaliyar ruwa, amma babu wata alama da ke nuna cewa za a saki ruwa daga ambaliyar ruwa da ta afku a tsakiyar safiyar Juma'a, a cewar jami'an Hukumar Kula da Yanayi ta Kasa ta Juneau.
Kogin, wanda aka yi ta fitar da ruwa kowace shekara da aka sani da jökulhlaups tun daga shekarar 2011, ya cika kuma "an gano raguwar ruwa daidai da yadda ruwa ke cika madatsar kankara da safiyar Alhamis," a cewar wata sanarwa da NWS Juneau ta fitar da misalin karfe 11 na safe ranar Alhamis a shafin yanar gizo na sa ido kan yankin Suicide Basin. Sanarwar ta lura cewa ya ɗauki kwanaki shida daga lokacin da kwarin ya cika har sai da aka fitar da ruwa a bara.
"Da zarar an gano shaidar magudanar ruwa a ƙarƙashin ƙanƙara, za a bayar da Gargaɗi game da Ambaliyar Ruwa," in ji sanarwar.
Wani sabon rahoto da aka buga da ƙarfe 9 na safe a ranar Juma'a ya nuna cewa "yanayin bai canza ba" a cikin ranar da ta gabata.
Andrew Park, wani masanin yanayi a tashar da ke kusa da kankara, ya ce a wata hira da aka yi da shi a safiyar Alhamis cewa kwararar ruwa "ba yana nufin cewa ana samun ceto a yanzu ba."
"Wannan shine babban saƙon - cewa mun san hakan kuma muna jiran ƙarin bayani," in ji shi.
Duk da haka, ga mutanen yankin "yanzu ne lokacin da za a fara shiri don fuskantar barazanar ambaliyar ruwa," in ji wata sanarwa da NWS Juneau ta fitar.
Ya zuwa safiyar Alhamis, matakin ruwan Kogin Mendenhall ya kai ƙafa 6.43, idan aka kwatanta da kimanin ƙafa huɗu a farkon fitar da shi a bara. Amma Park ya ce babban abin da ke haifar da tsananin ambaliyar ruwa a wannan shekarar shine yadda ruwan zai yi sauri ya malale daga kwarin lokacin da madatsar ruwan kankara ta fashe.
"Idan kana da ƙaramin ɓuɓɓugar ruwa, ba matsala ba ce," in ji shi. "Amma ka zubar da duk wannan ruwan nan da nan za ka ga manyan matsaloli."
Hukumar Binciken Yanayin Kasa ta Amurka ta sanya sabbin kayan sa ido a kan gadar Kogin Mendenhall da ke kan titin Back Loop a safiyar Alhamis don taimakawa wajen shirya shirye-shiryen fitar da 'yan gudun hijira don sakin 'yan gudun hijirar da ke cikin Tafkin Suicide. A bara lokacin da aka samu fitowar ruwa mai yawa a ranar 5 ga Agusta, USGS ta dogara ne kawai da ma'aunin rafin tafkin Mendenhall.
Randy Host, wani masanin ruwa a USGS, ya ce ma'aunin gudu zai ba da damar ƙarin sa ido kan ruwan ambaliyar ruwa ta cikin kogin.
"Zai yi aikin dandali, abin da muke kira tsayin ma'auni, kamar yadda kogin yake," in ji shi. "Sannan kuma zai yi aikin saurin saman. Zai auna yadda ruwan yake da sauri a saman."
Yawancin Kogin Mendenhall yanzu an cika shi da duwatsu domin kare gine-gine bayan ambaliyar ruwa ta bara ta lalata gabar kogin sosai. Ambaliyar ta lalata gidaje uku ko gaba ɗaya, kuma gidaje sama da goma sha biyu sun fuskanci barna iri-iri.
Amanda Hatch, wacce ambaliyar ruwa ta mamaye gidanta da inci takwas a cikin sararin samaniya a bara, ta ce an kammala wani babban gyare-gyare don ƙara kare gidan iyalinta.
"Ba mu damu sosai ba saboda mun ɗaga gidan ƙafa huɗu," in ji ta. "Amma muna da motar lantarki, don haka idan ambaliyar ruwa ta yi, za mu ɗaga motar zuwa gidan abokina. Amma mun shirya."
An kuma ƙarfafa sararin rarrafe na gidan don kare shi daga ambaliyar ruwa, in ji Hatch. Ta ce inshorar ba ta biya diyya ga barnar da ta faru a bara ba, amma tallafin gaggawa da tallafin kuɗi da aka nema daga Ƙungiyar Ƙananan Kasuwanci ta Tarayya sun taimaka wajen yin gyare-gyare da haɓakawa.
Bayan haka, Hatch ya ce, babu wani abu da za a yi sai dai a sa ido kan abin da ke faruwa.
"Babu wani bayani game da yadda zai kasance, ko ba haka ba?" ta ce. "Zai iya zama mafi girma. Zai iya zama ƙasa. Zai iya zama a hankali. Kawai sai mu jira mu gani. Ina farin ciki cewa jerin abubuwanmu sun ƙare don haka ba sai mun damu da hakan ba."
Marty McKeown, wanda gidansa ya gamu da mummunan lalacewa wanda ya bar rami mai faɗi a ƙasan falon, ya ce har yanzu yana gyara gidan da kuma barandar da ta wanke - kuma baya ga bashin SBA, bai sami sauƙi da yake fata daga birnin ko wasu hukumomin gwamnati ba. Ya ce yana da "babban damuwa" game da halin da ake ciki a yanzu, amma ba ya cikin fargaba yayin da yake sa ido kan yanayin kwarin.
"Za mu sa ido kan kogin kuma mu ɗauki mataki idan ya cancanta," in ji shi. "Ba zan fara ƙaura daga gidana ba. Za mu sami lokaci idan wani abu ya faru."
An kafa sabon rikodin ruwan sama a watan Yuli a Juneau a cikin watan da ya gabata, inda wani rahoto na farko ya nuna cewa ruwan sama ya kai inci 12.21 a Filin Jirgin Sama na Duniya na Juneau idan aka kwatanta da yawan ruwan sama da ya kai inci 10.4 a baya a shekarar 2015. An sami ruwan sama mai aunawa a duk kwanaki biyu na watan, ciki har da inci 0.77 da aka auna a ranar Laraba.
Hasashen zai fara ne daga farkon mako mai zuwa, wanda zai nuna cewa za a share sararin samaniya da kuma sama har zuwa shekaru 70.
Robert Barr, mataimakin manajan birni na birnin da gundumar Juneau, ya ce ruwan sama mai ƙarfi a Juneau abin damuwa ne domin idan kogin ya yi yawa, akwai ƙarancin sarari don sakin ruwa don cike kogin. Ya ce CBJ tana karɓar rahotannin yanayi na yau da kullun daga NWSJ.
"Suna ba mu mafi kyawun hasashensu game da yadda jökulhlaup zai kasance a matakai daban-daban na fitarwa idan aka fitar da shi a lokacin wannan rahoton," in ji shi. "Don haka kowace rana muna fahimtar hakan. Kuma ainihin abin da hakan ke gaya mana shi ne idan jökulhlaup ya fito a yanzu, a kashi 20% zuwa 60% na jimlar adadin Suicide Basin, ga yadda jökulhlaup zai kasance. Idan ya fito a kashi 100% na girman Suicide Basin - wanda a bara ya fito a kashi 96% - ga yadda jökulhlaup zai kasance. Kuma a yanzu idan ya fito a kashi 100% zai fi muni fiye da bara."
Barr ya ce, kwarin ba ya fitowa da kashi 100% na yawan ruwan da kwarin ya fitar a lokaci guda. Amma babu yadda za a iya gane yadda ruwan zai fito da sauri.
Da fatan a danna mahaɗin da ke ƙasa don ƙarin bayani
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Lokacin Saƙo: Oktoba-08-2024