The most active Volcano in the Pacific Northwest USA has begun to stir again with more than 130 small earthquakes beneath Mount St. Helens, and today, two more earthquakes struck the CASCADIA SUBDUCTION ZONE!
This behavior indicates that the volcano is steadily recharging – but while it may sound alarming, the experts say they haven’t yet spotted any signs of an imminent Eruption.
Washington’s notorious volcano is best known for its ‘cataclysmic’ 1980 eruption, which Brought Devastation and destruction that stretched on for Miles, and Visible Ash Fall nearly 1000 miles away. The event killed 57 people and blasted more than 1,300 feet off the top of the mountain. Now, scientists say its recharging for another eruption.
THE NEW ACTIVITY
Beginning on March 14, 2016, scientists detected low magnitude earthquakes from 1.2 to 4 miles beneath Mount St. Helens. In just the last eight weeks, there have been more than 130 earthquakes, mostly of magnitudes .5 or less.
The largest so far has been a magnitude 1.3.
Scientists say the earthquakes have been steadily increasing in numbers, with up to 40 occurring per week.
So far, though, there have not been any atypical gas emissions, increases in ground inflation, or shallow seismicity.
Scientists claim this means that there are currently no signs of a potential eruption.
Washington’s notorious volcano is best known for its ‘cataclysmic’ 1980 eruption, which brought devastation and destruction that stretched on for miles, and Visible Ash fall nearly 1,000 miles away.
The event has come to be known as one of the ‘deadliest eruptions in US history’.
It reawakened in 2004, spewing steam and ash up to 10,000 feet into the air.
This activity continued until January 2008, and five months later, scientists concluded Mount St. Helens had gone to sleep.
Now, the volcano is once again recharging.
The blue dots on the graphic below show the locations of the recent spike in earthquakes inside the volcano at Mount St Helens: