Yanayin yanayi na guguwa

An yi rikodin Guguwa a duk nahiyoyi sai dai Antarctica. Sun fi yawa a tsakiyar latitudes inda yanayi sau da yawa yana da kyau ga ci gaban guguwa. Amurka tana da mafi yawan guguwa a kowace ƙasa, da kuma guguwa mafi karfi da mafi yawan tashin hankali. Babban bangare na waɗannan guguwa sun samo asali ne a wani yanki na tsakiyar Amurka wanda aka fi sani da Tornado Alley . Kanada tana fuskantar guguwa ta biyu mafi yawa. Ontario da lardunan Prairie suna ganin mafi girman mitar. Sauran yankuna na duniya waɗanda ke da guguwa akai-akai sun haɗa da manyan ɓangarorin Turai, Afirka ta Kudu, Philippines, Bangladesh, ɓangarorin Argentina, Uruguay, kudanci da kudu maso gabashin Brazil, arewacin Mexico, gabashin da yammacin Australia, New Zealand, da gabashin gabashin Asiya.

Rahotanni na guguwa a Amurka an tattara su a hukumance tun 1950. Cibiyar Bayanan Yanayi ta Kasa (NCDC), wacce ke Asheville, North Carolina ce ta tattara waɗannan rahotanni. Ana iya bayar da rahoton guguwa fiye da sau ɗaya, kamar lokacin da guguwa ta haye layin gundumar kuma ana yin rahotanni daga yankuna biyu. Ana auna tsananin guguwa ta hanyar Enhanced Fujita Scale, wanda ke auna tsayin guguwa a kan sikelin EF0 zuwa EF5 bisa ga matakin lalacewa. Ana yin kimantawa bayan guguwar ta ɓace kuma ƙwararrun masu kula da yanayi suna nazarin hanyar lalacewa a hankali. Jerin barkewar guguwa da ke ci gaba an san shi da jerin barkewar gwagwarmaya.

## Yanayin da ake bukata
Ba kowane tsawa ba, supercell, layin guguwa, ko Guguwa ta wurare masu zafi zai haifar da guguwa. Daidai ana buƙatar yanayin yanayi mai kyau don samar da guguwa mai rauni. Guguwa na iya samuwa a kowane wata lokacin da yanayi ya dace. 1,000 ko fiye da guguwa a shekara ana bayar da rahoton a cikin Amurka da ke kusa. Babban yawan guguwa a Arewacin Amurka yafi yawa saboda yanayin ƙasa, kamar yadda danshi daga Tekun Mexico ke sauƙaƙe zuwa tsakiyar nahiyar tare da ƙananan shingen ƙasa a hanya. Duwatsun Rocky suna toshe danshi na Pacific kuma suna ɗaure kwararar yanayi, suna tilasta iska mai bushewa zuwa matsakaicin matakan troposphere. Iska mai saukowa daga Rockies yana tilasta samar da layin bushe lokacin da kwararar sama ke da ƙarfi, yayin da Tekun Mexico ke samar da ruwa mai yawa. Wannan yanayin ƙasa na musamman yana ba da damar haɗuwa akai-akai na iska mai dumi da sanyi, yanayin da ke haifar da guguwa mai ƙarfi, mai tsawo a duk shekara. Wannan yanki ya kai Kanada, musamman Ontario da lardunan Prairie. Hakanan guguwa na iya haifar da guguwa, kodayake guguwa da guguwar ta haifar sau da yawa sun fi rauni kuma sun fi wuya a gani. Lokacin hunturu shine mafi ƙarancin lokaci don guguwa ta faru, tunda aikin guguwa kusan babu shi a wannan lokacin, kuma yana da wahala ga iska mai zafi, mai laushi na teku don karɓar iska mai sanyi na Arctic daga Kanada. Ana samun abubuwan da ke faruwa a cikin hunturu galibi a cikin Jihohin Gulf da Florida (ko da yake akwai wasu sanannun banbanci).

Yankin da ke cikin guguwa na Kudancin Amurka yana da kyau ga guguwa da tsawa mai tsanani saboda girman girman filin Pampas inda iska mai sanyi, busassun iska daga Patagonia, Andes, da Antarctica suka haɗu da iska mai dumi, mai laushi daga yankunan Brazil, arewacin Argentina, da Paraguay.

Turai tana da wasu ƙananan "tushen guguwa" - mai yiwuwa saboda haɗari na gaba kamar a kudu da gabashin Ingila,  amma kuma saboda Turai ta rabu da tsaunuka kamar Alps. Kwarin Po (Pianura Padana) yana daya daga cikin yankunan da ke fuskantar ayyukan guguwa fiye da sauran wurare a nahiyar Turai. Da yake a tsakiyar Turai, tsakanin Alps da Apennines, haɗuwa tsakanin iska mai sanyi da mai dumi a nan a lokacin watanni na rani yana ba da damar haɓaka tsawa mai ƙarfi. Mafi yawan guguwa suna faruwa a gabashin yankin Po Plains. Sassan Styria (Steiermark) a Austria na iya zama hanyar guguwa, kuma wannan jiha tana da akalla guguwa F3 guda uku tun daga 1900. F3 kuma watakila guguwa guda ɗaya ta F4 sun faru har zuwa arewacin Finland.

## Manazarta