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Long Valley volcano
caldera 3390 m / 11,122 ft
California, 37.7°N / -118.87°W
Current status: dormant (1 out of 5)
Long Valley webcams / live data | Reports
Long Valley volcano books
Long Valley volcano eruptions:
111,000-57,000 years ago (formation of Mammoth Mountain)
Typical eruption style:
Explosive
Last earthquakes nearby
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Latest news & updates for Long Valley Caldera volcano

Long Valley caldera (California): felt magnitude 3.8 earthquake

Sunday Mar 31, 2013 10:53 AM | BY: T

Location of yesterday's 3.8 earthquake
Location of yesterday's 3.8 earthquake
Depth vs time of quakes at the Long Valley caldera (CA)
Depth vs time of quakes at the Long Valley caldera (CA)
Some felt earthquakes have occurred recently along the southern boundary of Long Valley Caldera, the latest a 3.8 magnitude quakes yesterday. This is not unusual for the volcanic system and does not mean any volcanic eruption should be expected in a near future. The alert status remains green (normal).
Previous news
Depth vs time of quakes at the Long Valley caldera (CA)
Wednesday, Mar 20, 2013
Small earthquakes continue to occur clustered near the SW margin of the caldera and Mammoth Mountain. The earthquake are tiny to small (less than magnitude 2) and show nothing usual going on. [more]

Saturday, Jan 26, 2013
Tiny quakes continue to be recorded under and near the Long Valley caldera. A small swarm is visible today in an area 20 km to the SE of Mammoth Mountain, at the SW limit of the caldera. [more]
Small earthquake swarm at Long Valley on 24 Aug 2012
Friday, Aug 24, 2012
A small earthquake swarm has developed at the southern margin of the caldera, just north of Convict Lakes. The largest was a 2.5 event at 10 km depth. ... [more]
Location of the recent quakes at Long Valley (red dots for 12-13 Aug)
Tuesday, Aug 14, 2012
A small swarm of earthquakes could be during 12-13 Aug. About 30 (very small mostly [more]
 

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