News & activity updates
Mammoth Mountain volcano (California, USA) activity update
Sunday Feb 03, 2013 15:13 PM | BY: T
Map of recent quakes near Mammoth Mountain
Small earthquakes continue beneath and (mostly) immediately to the SE of Mammoth Mountain in the Sierra Nevada range.- All news about: Mammoth Mountain volcano
- Information about: Mammoth Mountain volcano
Previous news
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Tuesday, Jan 29, 2013
Another small earthquake swarm occurred under the (dormant) volcano during 28-29 Jan. Numerous tiny quakes were registered at shallow depths (mostly 1-5 km).
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Tuesday, Jan 22, 2013
Tiny earthquakes (less than mag 1) and some deep low-frequency events continue to occur at normal background levels under Mammoth Mountain.
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Monday, Jan 21, 2013
A small earthquake swarm occurred at Mammoth Mountain during 14-20 Jan and seems to have ended.
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Sunday, Jan 06, 2013
A small seismic swarm occurred between 4-5 January with quakes at depth of 12-15 km.
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Friday, Dec 28, 2012
Another (weak) earthquake swarm has started yesterday evening at Mammoth Mountain. Most quakes are at about 20 km depth in an area 5 km SW of the mountain.
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