Mammoth Mountain volcano (California, USA) activity update
Sun, 6 Jan 2013, 10:1110:11 AM | BY: T
A small seismic swarm occurred between 4-5 January with quakes at depth of 12-15 km.
Time and depth of quakes near Mammoth Mountain during the past days
Fri, 28 Dec 2012, 08:50
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. ... Read all
Fri, 16 Nov 2012, 08:45
Another small earthquake swarm has occurred between 14-16 Nov. Such seismic activity falls into the normal behaviour of an active caldera system, and should not be seen as indicator of new eruptions to be expected in the near future. USGS who monitor their volcanoes very carefully maintain alert level green (normal) for Long Valley and Mammoth Mountain. ... Read all