Earthquake Swarms in Mt Rainier - USA
July 12 , 2025
17 hrs 0 min
33
- More than 300 earthquakes have erupted at Washington's Mount Rainier.
- This is the most significant seismicity at the volcano since 2009.
- Mount Rainier is considered an active volcano and has not had a significant eruption in the past 500 years.
- Mount Rainier is an active stratovolcano and national park in the state of Washington.
- It rises more than 14,000 feet above sea level and sprawls over five major rivers.
- An earthquake swarm is a cluster of small earthquakes occurring over a short period in a confined area.

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