Mount St. Helens Recharging

Posted by on Friday, May 6, 2016

Mount St. Helens in Washington State is producing an earthquake swarm. Earthquakes have been occurring from depths of 2 to over 7 kilometers beneath the volcano. The USGS volcanologists and seismologists are interpreting this swarm as a response to the slow “recharging” for the volcano.

Since 1988 there have been several "recharging" events so there is no current need to worry.

On May 18, 1980, a major volcanic eruption occurred at Mount St. Helens. The eruption (a VEI 5 event) was the only significant volcanic eruption to occur in the contiguous 48 U.S. states since the 1915 eruption of Lassen Peak in California.

Mount St. Helens or Louwala-Clough is an active stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States. It is 96 miles south of Seattle, Washington, and 50 miles northeast of Portland, Oregon. 

The Team

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