US Edition
Earthquake Swarm Detected at Mount Rainier, Biggest Since 2009
KING COUNTY, WASHINGTON, JUL 8 – Over 400 earthquakes shook Mount Rainier and 1,300 hit Japan's Tokara Islands recently, triggering evacuations but no eruption warnings, officials said.
- Officials detected the largest swarm of small earthquakes in over 15 years at Mount Rainier starting early Tuesday near Seattle.
- This swarm follows background seismic activity typical of Mount Rainier, where one to two swarms occur annually and seismic monitoring began in 1982.
- The swarm included over 334 quakes by Thursday morning, peaking at magnitude 2.3, with events diminishing from 26 per hour Tuesday to fewer on Wednesday.
- USGS experts indicated that the recent earthquakes beneath the volcano are minor and not strong enough to be detected by people, attributing them to fluid movement underground, and confirmed there is no evidence suggesting an impending eruption.
- Officials will continue monitoring Mount Rainier daily, stressing this seismic activity remains within normal background levels and poses no current eruption risk.
49 Articles
49 Articles
Activist Post
Brace Yourself! More Than 400 Earthquakes Just Shook Mt. Rainier In Washington State And More Than 1,300 Earthquakes Just Rattled Japan
Is there a possibility that a cataclysmic eruption of Mt. Rainier could occur in the not too distant future? On Tuesday morning, Mt. Rainier was shaken by over 400 earthquakes. It was the largest earthquake swarm that we have seen at Mt. Rainier since 2009. Those that have been following my work for a long time already know why this earthquake swarm immediately got my attention. One of these days, Mt. Rainier will suddenly erupt, and a lot o…
‘Larger swarm than anything we’ve seen’: Rainier quakes reach historic levels
“It’s now a larger swarm than anything we’ve seen since we’ve been (seismic) monitoring anything at Mount Rainier,” Alex Iezzi, a research geophysicist, said in an interview Thursday.Researchers started seismic monitoring at Mount Rainier in the 1970s, according to Iezzi, who works for the U.S. Geological Survey’s Cascades Volcano Observatory and said she conferred with other seismologists to identify the origin of observations at the mountain. …
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