Latest Volcanic activity of Mount St. Helens Stories
Until earlier this week, the most recent significant tremor at Mount St. Helens was in October of 2004. On Sunday January 13th, some steam was rising from a fracture in Mount St. Helensâ€™ crater.
Mount St. Helens may be following the example of Kilauea in Hawaii with magma being replaced from a reservoir beneath the volcano as fast as it emerges as lava at the surface, scientists say.
Mount St. Helens shot a steam and ash plume at least 16,000 feet into the air Monday after a large rockfall from the lava dome in the volcano's crater, scientists said.
The sheer rock fin emerging in Mount St. Helens' crater lost about a third of its northern face recently, but because lava keeps pushing to the surface, the height remained the same Thursday - around 330 feet.
Roughly every three seconds, the equivalent of a large dump truck load of lava - 10 cubic yards - oozes into the crater of Mount St. Helens, and with the molten rock comes a steady drumfire of small earthquakes.
SEATTLE (Reuters) - A rock fall at Mount Saint Helens caused a large gray cloud of dust to appear above the volcano on Tuesday, but there was no sign of increased seismic activity.
In September 9 story headlined "Scientists find growing land bulge in Oregon," please read in first paragraph, "A large, slow-growing volcanic bulge in Western Oregon," instead of "A large, slow-growing volcanic bulge in Eastern Oregon." A corrected story follows: By Teresa Carson PORTLAND, Oregon (Reuters) - A large, slow-growing volcanic bulge in Western Oregon is attracting the attention of seismologists who say that the rising ground could be the beginnings of a volcano or simply...
By Teresa Carson PORTLAND, Oregon (Reuters) - A large, slow-growing volcanic bulge in Eastern Oregon is attracting the attention of seismologists who say that the rising ground could be the beginnings of a volcano or simply magma shifting underground.
Johnston Ridge Observatory reopened to the public Friday, seven months after it was closed because of new activity at Mount St. Helens.
Growth of the new lava dome inside the crater of Mount St. Helens has gradually slowed since the mountain reawakened in October, scientists said Tuesday.
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