News & updates from Cumbal volcano
Thursday, May 16, 2013
Pasto volcano observatory reports no significant changes and maintains yellow (unrest) alert level. The only sign of activity is continuing slightly elevated seismicity (up to magnitudes 1) at shallow depths (less than 3 km) under La Plazuela crater on the northern flank of the volcanic complex.
Thursday, May 02, 2013
Pasto observatory reported an increase in seismic activity during the past week, with many small volcanic-tectonic quakes u to magnitudes of 2.6 at varying depths of up to 20 km underneath of La Plazuela crater on the northern sector of the volcanic complex.
Thursday, Jan 31, 2013
Seismic activity has remained low during the past week.
Wednesday, Jan 23, 2013
INGEOMINAS reported a slight increase in seismicity related to internal fluid movements during the past week. Degassing as the only surface activity was observed on clear days.
Friday, Jan 11, 2013
Weak seismic unrest continues with no major changes with activity reflecting internal fluid movements. ...more
Thursday, Nov 15, 2012
Seismic swarms continue to occur beneath the volcano: on 6, 8-9, 10 and 12 Nov, earthquake swarms with 60, 80, 100 and 90 events respectively were recorded. (INGEOMINAS)
Wednesday, Nov 07, 2012
Elevated seismicity, but lower than in previous weeks, continued. 2 swarms of quakes with 79 and 81 events occurred on 2 and 4 November.
Friday, Nov 02, 2012
3 weak seismic swarms of low energy events occurred during the past week: one on October 25 (with about 200 events), and two on October 26 (with about 316 earthquakes).
Wednesday, Oct 17, 2012
2 swarms of earthquakes of low energy level occurred on 9 October between 1:00 pm and 6:30 pm with approximately 50 events, and between 7:00 pm on Oct. 11 and 6:00 am on October 12 with 112 earthquakes.
Friday, Oct 12, 2012
Slightly elevate seismicity continues. A small swarm of earthquakes of low energy occurred on October 4th between 09:00 am and 12:30 pm local time when about 50 earthquakes were recorded under the volcano.
Wednesday, Oct 03, 2012
On 26 and 27 September earthquake swarms of low energy level occurred with the 95 and 87 events respectively. ...more
Wednesday, Sep 26, 2012
Earthquake swarms occurred in episodes of low energy on 18 and 21 September, with 400 and 170 events respectively. ...more
Wednesday, Sep 19, 2012
Weak seismic unrest continued over the past week.
Wednesday, Sep 05, 2012
A small weak earthquake swarm was recorded early on 30 August.
Wednesday, Aug 29, 2012
Seismic unrest has been increasing. 2 earthquake swarms occurred on 23 and 26 August, with 115 and 94 quakes, respectively. White gas emissions from the El Verde fumarole could be observed on 24 August. INGEOMINAS mintains yellow alert for the volcano.
Wednesday, Aug 22, 2012
Tuesday, Jul 31, 2012
Seismic signals indicating fluid movements under the volcano are still present but have decreased. Such signals occurred on 26, 27, 29 and 30 July.
Friday, Jul 27, 2012