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Below the Flash movie may be a copy of the press release as issued the same day by the U.S. Geological Survey, Cascades Volcano Observatory, Vancouver, Washington.
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|Eruption Event Movie - October 01, 2004|
Mount St. Helens Information Statement
(As issued by the U.S. Geological Survey, Vancouver, Washington
Shortly before Noon today, Mount St. Helens emitted a plume of steam and minor ash from an area of new crevasses in the crater glacier south of the 1980-86 lava dome. The event lasted from 11:57 to 12:21 PDT and created a pale-gray cloud that reached an altitude of about 9,700 feet (from pilot reports).
It drifted southwestward, where nearby residents should receive no more than a minor dusting of ash. USGS scientists making thermal measurements witnessed the emission and noted that the clouds were not particularly hot. Blocks of rock and ice ejected by the event fell in the crater and rim areas. The emission was accompanied by an abrupt drop in seismicity, which remains at low levels.
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