Copahue volcano news & activity updates
Saturday, Nov 16, 2013
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Monday, Oct 07, 2013
Saturday, Oct 05, 2013
Tuesday, Oct 01, 2013
Friday, Aug 16, 2013
Sunday, Jul 07, 2013
Wednesday, Jun 12, 2013
Seismic activity has dropped sharply from 13 events / hour to only one per hour during only 9 hours. No corresponding changes were observed at the surface. The volcano continues to emit a small plume of steam and gas.
Monday, Jun 10, 2013
Seismic and degassing activity have decreased, although SERNAGEOMIN maintains alert level "orange". A total of 120 quakes, mostly near the surface, were counted during 8-9 June. No volcanic tremor was detected. A white steam and gas plume was rising 300 m from the crater. ...more
Friday, Jun 07, 2013
Seismic unrest continues, but the number and energy of quakes has been decreasing in recent days.
Tuesday, Jun 04, 2013
The alert level of the volcano was lowered from "red" to "orange" in response to a declining trend of seismic activity recorded under the volcano. However, seismic activity remains significant and monitoring efforts continue at maximum level. ...more
Thursday, May 30, 2013
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Wednesday, May 29, 2013
The earthquake swarm has increased and continues today, but the volcano has not yet erupted. The earthquakes are occurring at very high frequency (130 per hour) and are mostly "hybrid", i.e. related to both rock-fracturing and fluid-movements within the volcanic edifice. ...more [read all]
Monday, May 27, 2013
An eruption of the volcano could be imminent. SERNAGEOMIN and Civil Protection have raised the alert level to "red", based on the increasing earthquake activity under the volcano. Although so far no volcanic tremor (often a sign of eruptive activity) nor ash plumes have been detected via satellite, citizens of Caviahue in Argentina across the border from Copahue have reported explosions and incandescence from the volcano. ...more
Sunday, May 26, 2013
Although degassing and ash emissions have decreased, seismic activity at the volcano has picked up, SERNAGEOMIN reported. An average of 356 earthquakes per hour, sometimes merging into what looks as volcanic tremor, has been recorded recently. This could be related to intruding magma from a new batch of magma rising at the moment and as a result, phreatomagmatic or magmatic activity could occur at the surface in the near future. ...more
Saturday, May 25, 2013
Friday, May 24, 2013
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Sunday, May 12, 2013
SERNAGEOMIN has recently raised the alert back to yellow after new small explosions occurred at the volcano and incandescence was observed at the summit crater. A small but persistent steam-and-ash plume has been rising about 350 m from the volcano. Interestingly, little change in the seismic activity has been noticed with the incandescence and explosions, so it is not clear whether this new activity is caused by fresh magma rising towards the surface.
Saturday, Apr 20, 2013
Volcanic unrest has been declared over and the volcanic alert level was lowered back to green, as well as the hazard level for the community of Alto Biobio.
Friday, Apr 12, 2013
A pilot reported the emission of steam, gas and minor amounts of volcanic ash from the volcano today (VAAC Buenos Aires). SERNAGEOMIN has not reported unusual activity and maintains alert level yellow.
Tuesday, Apr 02, 2013
Based on analysis of satellite imagery and a pilot observation, the Buenos Aires VAAC reported that on 28 March steam-and-gas emissions with small amounts of ash rose from Copahue.
Tuesday, Feb 19, 2013
The volcano continued to show a gradually decreasing trend of internal activity, is the conclusion of the latest bulletin SERNAGEOMIN published. ...more
Tuesday, Feb 05, 2013
Seismic activity dropped drastically yesterday, with only one volcanic tectonic quake and low-energy continuous tremor registered. A white steam and gas plume with no ash rises about 1500 m above the volcano. Sernageomin lowered the status of the volcano to yellow.
Monday, Feb 04, 2013
Activity has increased again. Sernageomin reported 92 seismic events during 2-3 Jan and the occurrence of a seismic swarm on the evening of 2 Jan. A degassing plume was observed rising up to 1350 m, whose intensity was without apparent correlation to seismicity.
Saturday, Feb 02, 2013
Seismic activity has decreased and no new surface activity observed. During the past 24 hours since last night, SERNAGEOMIN only detected one tiny volcanic earthquake.