Ƙididdigar dusar ƙanƙara ta yanki

Ƙididdigar dusar ƙanƙara ta yanki (RSI) sikelin ne da NOAA ke amfani da shi don tantance tasirin al'umma na guguwar hunturu a gabashin kashi biyu bisa uku na Amurka kuma ya rarraba su cikin ɗayan rukunoni shida. An fara aiwatar da tsarin ne a cikin shekara ta 2014, kuma ya maye gurbin tsarin Northeast Snowfall Impact Scale (NESIS) wanda Cibiyar Bayanan Yanayi ta Kasa (NCDC) ta fara amfani da shi a cikin shekara. NCDC ta ba da ƙimar RSI ga kusan guguwar tarihi 600 da ta faru tun daga shekara ta 1900.

Ana rarraba guguwa daga Category 0 "Nuisance" zuwa Category 5 "Extreme" a kan sikelin. Ana kimanta tasirin guguwar a yankuna daban-daban guda shida na Amurka: Arewa maso gabas, Arewacin Rockies da Plains, Ohio Valley, Kudu, Kudu maso gabas da Upper Midwest.

Lissafin yana amfani da yawan jama'a da bambance-bambance na yanki don tantance tasirin dusar ƙanƙara. Misali, yankunan da ke karɓar dusar ƙanƙara kaɗan a matsakaici na iya zama mafi muni fiye da sauran yankuna, don haka alamar za ta ba da hadari a waɗancan yankuna mafi tsanani.

 Bayani na gaba ɗaya 
A cikin kowane yanki, an saita "ƙofofi" guda huɗu bisa ga bayanan yanayi don lissafin darajar RSI:

 kashi ɗaya cikin huɗu na yawan dusar ƙanƙara da ke faruwa sau ɗaya a kowace shekara 10
 rabin adadin dusar ƙanƙara da ke faruwa sau ɗaya a kowace shekara 25
 yawan dusar ƙanƙara da ke faruwa sau ɗaya a kowace shekara 25
 sau ɗaya da rabi yawan dusar ƙanƙara da ke faruwa sau ɗaya a kowace shekara 25

Misali, a Arewa maso gabas, wani wuri na yau da kullun zai sami inci 16 na dusar ƙanƙara kusan sau ɗaya a kowace shekara 10 da inci 20 kusan sau ɗaya, don haka ƙofofin suna da inci 4, 10, 20, da 30.

Ga kowane ƙofar da kowane yanki, an ƙayyade yankin tushe da yawan jama'a; ga guguwa da aka ba shi, yankin da ya wuce takamaiman ƙofar za a daidaita shi da ƙimar tushe. Misali, don guguwa a Arewa maso gabas, yankin da ke karɓar akalla inci 4 na dusar ƙanƙara an raba shi da murabba'in kilomita 149,228, kuma yawan mutanen da abin ya shafa an raba su da 51,553,600 (ta amfani da bayanan ƙididdigar 2010). Wannan yana ba da lambobi daban-daban guda takwas da ke wakiltar yadda aka kwatanta guguwar da sanannun guguwar dusar ƙanƙara a wannan yankin. Yankin tushe da yawan jama'a suna wakiltar matsakaicin yanki da yawan jamaʼa don manyan guguwa, don haka kowane ɗayan waɗannan matakan daban-daban guda takwas zai zama matsakaicin darajar RSI na 1.0 daga cikin guguwa da aka ɗauka sananne (don samfurin daidaitawa). RSI shine kawai jimlar waɗannan lambobi takwas.

 Dubi kuma 


 Jerin ƙididdigar dusar ƙanƙara na yanki 5 guguwar hunturu
 Jerin ƙididdigar dusar ƙanƙara na yanki 4 hadari na hunturu
 Rarrabawar Miller
 Ƙididdigar tsananin lokacin hunturu

 Manazarta 

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