Cluster of earthquakes under Mount St. Helens has some concerned that it’s recharging

StHelens-quakes Mount St. Helens and Spirit Lake appear through the window of a Cessna 172N flying overhead May 11, 2021. Scientists reported that about 400 small earthquakes have been recorded under Mount St. Helens since mid-July. (Joshua Hart/The Columbian files)

Revelations 6:12 When he opened the sixth seal, I looked, and behold, there was a great earthquake, and the sun became black as sackcloth, the full moon became like blood

Important Takeaways:

  • 400 earthquakes recorded under Mount St. Helens since mid-July
  • Scientist says small quakes signal volcano is ‘recharging’
  • About 400 earthquakes have rumbled under Mount St. Helens since mid-July, the largest chain of shakes since the volcano finished erupting in 2008, the U.S. Geological Survey reported last week.
  • Small magnitude earthquakes, detected only by sensitive equipment, signal a volcano’s “recharging” as magma flows through chambers and cracks deep under the ground, said Wes Thelen, U.S. Geological Survey Cascades Volcano Observatory geophysicist and seismologist.
  • Between late August and early September, scientists observed 40 to 50 earthquakes per week located between 2.5 to 5 miles below the crater floor, before recently dwindling to 30. To compare, Mount St. Helens averaged roughly 11 quakes per month since 2008.

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