Mount St. Helens
October 21, 2009 | No Comments | Portland Tours
Portland Concierge Association & America’s Hub World Tours explore the eruption of Mount St. Helens October 19, 2009.
On May 18, 1980, Mount St. Helens erupted by an earthquake measuring 5.1 on the Richter scale.
Shaken by an earthquake measuring 5.1 on the Richter scale, the north face of this tall symmetrical mountain collapsed in a massive rock debris avalanche. Nearly 230 square miles of forest was blown down or buried beneath volcanic deposits. At the same time a mushroom-shaped column of ash rose thousands of feet skyward and drifted downwind, turning day into night as dark, gray ash fell over eastern Washington and beyond. The eruption lasted 9 hours, but Mount St. Helens and the surrounding landscape were dramatically changed within moments.
Shaken by an earthquake measuring 5.1 on the Richter scale, the north face of this tall symmetrical mountain collapsed in a massive rock debris avalanche. Nearly 230 square miles of forest was blown down or buried beneath volcanic deposits. At the same time a mushroom-shaped column of ash rose thousands of feet skyward and drifted downwind, turning day into night as dark, gray ash fell over eastern Washington and beyond. The eruption lasted 9 hours, but Mount St. Helens and the surrounding landscape were dramatically changed within moments.
Click on the link below and enjoy great photos and laugher shared by all!
In 1982, the President and Congress created the 110,000-acre National Volcanic Monument for research, recreation, and education. Inside the Monument, the environment is left to respond naturally to the disturbance.
Come join us on this all-day tour and learn about the blast zone, mud and pyroclastic flows, biological regeneration and the largest avalanche recorded by man. Tours
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