February 12, 2014 –INDONESIA – VSI raised the alert status to the second highest level 3 (out of 4), “Siaga” (meaning eruption warning) on Kelut or Kelud volcano. In its latest report, VSI informs that an ongoing slight deformation, suggesting magma intrusion, has been detected since September and that a strong increase in seismic activity started on 7 February. A seismic swarm occurred with hypocenters between 1.5-3.5 km depth beneath the summit area. The increased seismic activity triggered the decision to raise the status once more, after the volcano had put on alert level 2 already on 2 Feb. –Volcano Discovery
Kilauea (Hawai’i): (10 Feb) 32 earthquakes were strong enough to be located beneath Kilauea Volcano in the past 24 hours, including 21 scattered broadly beneath the summit caldera.
Mammoth Mountain (California, USA): An small earthquake swarm at shallow depths (around 5 km) occurred east of Mammoth Mountain during the past week. The largest quake was a magnitude 3.0 event on 5 Feb. This latest (of many in the past years) seismic swarm is weak in terms of number and energy of earthquakes compared to long-term averages of seismic activity at the Long Valley caldera, an active volcanic system that is capable to erupt (probably not in a near future, though) and is being closely monitored by very experienced staff from USGS. It could be related to a small intrusion of magma, but is unlikely to be a precursor of a new eruption in any near future. USGS has not changed the status code of the volcanic system (at green=normal). –Volcano Discovery