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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
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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 volcano (California) activity update

Saturday Jan 26, 2013 12:12 PM | BY: TOMPFEIFFER

Map of recent quakes near Mammoth Mountain
Map of recent quakes near Mammoth Mountain
Seismic recording at Mammoth Mountain (MMS station, USGS)
Seismic recording at Mammoth Mountain (MMS station, USGS)
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.
Previous news
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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