Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Hanyar wucewa: Abubuwa masu zafi, masu fashewa sun fashe kuma sun narke kusan dukkanin dutsen kankara na dutsen tare da mafi yawan dusar ƙanƙara da ke kan dutsen. Kamar yadda yake a yawancin fashewar St. Helens da suka gabata, wannan ya haifar da lahars masu yawa (tsutsotsi na dutsen mai fitad da wuta) da ambaliyar ruwa mai laka wanda ya shafi uku daga cikin magudanan ruwa guda huɗu a kan dutsen, wanda ya fara motsawa tun da wuri kamar 8:50 na safe. Lahars sun yi sauri har zuwa mil 90 a kowace awa (140 km / h) yayin da suke kan dutsen mai fitad da wuta amma a hankali ya ragu zuwa kusan mil uku a kowace awa (kilomita 4.8 a kowace awa) a kan sassan da suka fi fadi da koguna. Mudflows daga kudancin da gabashin gefen suna da daidaito na simintin rigar yayin da suke tsere a Kogin Muddy, Pine Creek da Smith Creek zuwa haɗuwarsu a Kogin Lewis. An cire gadoji a bakin Pine Creek da shugaban Swift Reservoir, wanda ya tashi 2.6 feet (0.79 m) da tsakar rana don saukar da kusan 18,000,000 cubic yards (14,000,000 m3) na ƙarin ruwa, laka da tarkace. Guguwa da dusar ƙanƙara sun haɗu da tephra a kan dutsen mai fitad da wuta don ƙirƙirar lahars mafi girma. Waɗannan raƙuman laka sun bi ta arewa da kudu na Kogin Toutle kuma sun haɗu a wurin da Kogin Toutle ya haɗu da Kogin Cowlitz kusa da Castle Rock, Washington, da ƙarfe 1:00 na rana. Mintuna casa'in bayan fashewar, kwararar laka ta farko ta motsa mil 27 (kilomita 43) sama inda masu sa ido a sansanin Baker na Weyerhaeuser suka ga bango mai tsayin ƙafa 12 (mita 4) na ruwa mai laka da tarkace ya wuce. Kusa da haɗuwa da arewacin Toutle da kudancin kudancin Silver Lake, an yi rikodin rikodin ambaliyar ruwa na 23.5 feet (7.2 m).An yi amfani da babban bututu mai saurin motsawa tare da daidaituwa kamar na turmi a farkon rana a shugaban arewacin Toutle River. Da ƙarfe 2:30 na rana, ambaliyar ta halaka sansanin Baker, kuma a cikin sa'o'i da suka biyo baya, an kwashe gadaje bakwai. Wani ɓangare na gudana ya koma baya na mil 2.5 (kilomita 4.0) ba da daɗewa ba bayan shiga Kogin Cowlitz, amma yawancin ya ci gaba da sauka. Bayan ya yi tafiyar mil 17 (kilomita 27), kimanin 3,900,000 cubic yards (3,000,000...  Tambaya: Yaya yanayin laka yake bayan fashewar St. Helen?
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