Over 130 earthquakes detected below Mount St. Helens as magma rises

Since mid-March, there have been a swarm of earthquakes under Mount St. Helens in Washington State, suggesting that the active stratovolcano is now recharging with magma. According to the U.S. Geological Survey (USGS), over 130 vertical earthquakes ranging from low magnitudes 0.5 to 1.3 have been detected two to seven kilometres beneath the volcano’s crater. […]

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