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Date/Time Thumbnail Dimensions User Comment; current: 01:53, 7 December 2007: 884 × 569 (104 KB): Murraybuckley {{Information |Description=svg map of the 1980 mount st helens ash fallout, info from usgs map |Source=self-made |Date=6 dec 2007 |Author= Murraybuckley |Permission= all rights released |other_versions= png version [[Image:1980_St._
The ash cloud produced by the eruption, as seen from the village of Toledo, Washington, 35 mi (56 km) to the northwest of Mount St. Helens: The cloud was roughly 40 mi (64 km) wide and 15 mi (24 km; 79,000 ft) high. Ash cloud from Mt. St. Helens as captured by the GOES 3 weather satellite at 15:45 UTC.
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Topographic map(OTM) Cross-wiki upload from en.wikipedia.org: File usage. The following page uses this file: 1980 eruption of Mount St. Helens; Global file usage.
Mount St. Helens, once the fifth-tallest peak in Washington State, lost about 1,300 feet from its height of 9,677, according to the USGS. The highest part of the crater rim on the southwestern ...
The eruption of Mount St. Helens on May 18, 1980, created a lahar or debris avalanche that rushed down the North Fork of the Toutle River, burying the whole valley up to 600 feet (180 m) deep. The lahar backed up Coldwater Creek for more than a mile (1.6 km), damming the creek and its tributary South Fork Coldwater Creek to a height of 180 feet ...
The upper part of the North Fork Toutle River watershed was redirected to the crater of Mount St. Helens itself until 1982. The river's headstreams begin on a volcanic ash deposit roughly 3 miles (5 km) long and 200 feet (61 m) deep, which is the source of much of the excess sediment.