File:Tree snags at Mount St. Helens.jpg

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Summary

Description Mount St. Helens, located in Washington State, erupted catastrophically on May 18, 1980. When the north side of the volcano collapsed, pressure was released on hot water within the volcano. The hot water burst into steam and blasted out the new opening in a powerful lateral blast. A hot stone-filled wind surged north at speeds over 300 miles per hour and temperatures of 660 °F. This lateral blast toppled or snapped off trees over a 230-square-mile area north of the volcano, which later became known as the "blowdown zone." On the outer fringes of the blowdown zone, the force of the lateral blast had diminished and trees remained standing but were seared by the hot air, leaving a band of standing dead trees referred to as the "scorch zone."
Date
Source Mount St. Helens
Author Pacific Northwest Research Station, Forest Service, USDA

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Public domain
This image is a work of the Forest Service of the United States Department of Agriculture. As a work of the U.S. federal government, the image is in the public domain.
This image was originally posted to Flickr by usfs_pnwrs at https://flickr.com/photos/126720625@N05/27613590417. It was reviewed on 16 March 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the Public Domain Mark.

16 March 2021

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47 millimetre

1 January 2000

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current14:00, 15 March 2021Thumbnail for version as of 14:00, 15 March 20215,184 × 3,456 (11.46 MB)Hike395Transferred from Flickr via #flickr2commons

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