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Last updated on April 19, 2014 at 18:42 EDT

Latest Mount St. Helens Stories

YellowStone's Volcanic Caldera Much More Super Than Estimated
2013-12-17 15:35:14

[ Watch the Video: Yellowstone Volcano Bigger Than Estimated ] Lee Rannals for redOrbit.com - Your Universe Online A supervolcano located in Yellowstone National Park is much larger than previously thought, according to research presented at the American Geophysical Union last week. The new study finds the supervolcano is about 2.5 times bigger than earlier estimates, stretching for more than 55 miles. Researchers used a network of seismometers situated around the national park to...

US Supervolcanoes: Yellowstone-Check, Utah-Check, Wait... Utah?
2013-12-12 14:41:08

[ Watch the Video: Add Another Supervolcano To North America's List ] Brett Smith for redOrbit.com - Your Universe Online Geologists from Brigham Young University in Utah have found evidence of a massive supervolcano near the Utah-Nevada border that had a massive eruption around 30 million years ago some 5,000 times larger than the Mount St. Helens eruption in 1980, according to a new report published in the journal Geosphere. “In southern Utah, deposits from this single eruption...

Philippines' Mount Mayon Erupts Killing Four, Injuring Several Others
2013-05-07 07:13:25

Lawrence LeBlond for redOrbit.com - Your Universe Online One of the Philippines most active volcanoes roared to life early Tuesday sending a cloud of ash and rocks into the morning sky. Mount Mayon, which sits about 206 miles southeast of the capital of Manila, killed five people and injured several others during the brief eruption. Eduardo del Rosario of the National Disaster Risk Reduction and Management Council (NDRRMC) confirmed that the blast killed five and injured seven. The...

2013-04-29 16:31:30

FEDERAL WAY, Wash., April 29, 2013 /PRNewswire/ -- Weyerhaeuser Company (NYSE: WY) today announced its 2013 operating schedule for the Charles W. Bingham Forest Learning Center located inside the blast zone at Mount St. Helens. (Logo: http://photos.prnewswire.com/prnh/20120111/AQ34535LOGO) The center tells the story of the May 18, 1980 eruption of Mount St. Helens and the subsequent hand-planting of more than 18 million seedlings. Through interactive exhibits and displays appropriate for...

Scientists Compile Largest Database Of Major Volcanic Eruptions
2013-01-18 15:42:29

Lee Rannals for redOrbit.com — Your Universe Online Scientists have compiled a database detailing around 2,000 major volcanic eruptions that occurred over the last 18 million years. The open access database of Large Magnitude Explosive Eruptions (LaMEVE) will be able to provide crucial information to scientists and others involved in volcano research. Volcanic eruptions have been known to cause disruptions in air traffic, impact climate, and alter surrounding landscapes. Gaining a...

Pre-eruption Activity In Conduits Affect Volcanic Ejections
2012-07-24 13:53:55

Brett Smith for redOrbit.com - Your Universe Online In addition to being fairly unpredictable, volcanoes can eject a wide range of material, from mile-high plums of black ash to a deadly hail of fist-sized pumice. These ejections travel extremely fast and can reach internal temperatures between 750 to 1,500 degrees Fahrenheit. The prevailing theory has been that the difference in particle size determined when bubbling magma deep below the volcano converts into a rising stream of gas and...

2012-05-16 22:41:53

The early April earthquake of magnitude 8.6 that shook Sumatra was a grim reminder of the devastating earthquakes and tsunami that killed tens of thousands of people in 2004 and 2005. Now a new study, funded by the National Science Foundation, shows that the residents of that region are at risk from yet another potentially deadly natural phenomenon — major volcanic eruptions. Researchers from Oregon State University working with colleagues in Indonesia have documented six major...

Scientists Observe Rapid Change In Underwater Volcano
2012-05-14 11:28:02

Lee Rannals for RedOrbit.com Researchers have been able to capture the rise and collapse of an underwater volcano in the Pacific Ocean for the first time. The team studying Monowai volcano near Tonga has recorded large changes in height of the volcano in just two weeks. The researchers gathered images by sonar on a ship, unveiling new details about the submarine mountains. There are as many as 32,000 underwater mountains that have been identified around the world, and the majority...

Image 1 - NASA: No Evidence Of 2012 Supervolcano
2011-11-15 11:46:51

NASA said on Tuesday that there is no evidence of a massive supervolcano erupting in 2012, despite what some may believe. A supervolcano refers to an explosive volcanic eruption that eject about ten thousand times the quantity of magma and ash that Mount St. Helens expelled in 1980. NASA said Earth's surface has preserved clues of many massive supervolcanoes through hollowed-out calderas-craters that can be as big as 60 miles across after a volcano collapses from emptying out its entire...

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2011-06-03 10:45:16

A 3-D model of a volcanic explosion, based on the 1980 eruption of Mount St. Helens in Washington state, may enhance our understanding of how some volcanic explosions occur and help identify of blast zones for potentially dangerous locations, according to an international team of volcanologists. "We took on the modeling of enormously complicated pyroclastic density currents, notably the classic, notorious May 1980 lateral blast that destroyed 500 square kilometers of forested terrain at Mount...