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Cerro Negro de Mayasquer volcano
stratovolcano 4445 m / 14,583 ft
Colombia, 0.83°N / -77.96°W
Current status: restless (2 out of 5)
Cerro Negro de Mayasquer webcams / live data | Reports
Cerro Negro de Mayasquer volcano books
Cerro Negro de Mayasquer volcano eruptions:
1936(?)
Typical eruption style:
explosive
Last earthquakes nearby
Latest satellite images
 

Cerro Negro de Mayasquer volcano news & activity updates:

Cerro Negro de Mayasquer and Chiles volcanoes (Ecuador, Colombia): continuing earthquake swarm indicates magma at depth

Wednesday Aug 07, 2019 12:05 PM | BY: T

Instituto Geofísico de la Escuela Politécnica Nacional (IGEPN) and the Observatorio Vulcanológico y Sismológico de Pasto del Servicio Geológico Colombiano (SGC OVSP) jointly reported that the most recent seismic swarm below Cerro Negro de Mayasquer and Chiles volcanoes began in September 2018 and continued at least through 1 August.
The swarm has consisted of 147,000 earthquakes, recorded up to the time of the report publication, mostly with magnitudes less than 3.6. Notably, at least 91 very-long-period earthquakes and 89 long-period earthquakes have been detected, indicative of a magmatic body at depth. In addition, at 07:38 on 25 July 2019, a M4 earthquake was located 4 km below the summit of Chiles and felt by residents. About 850 volcano-tectonic events were recorded during 25-28 July.
Source: Smithsonian / USGS Weekly Volcanic Activity Report 31 July-6 August 2019
Previous news
Number of earthquakes under Chiles-Cerro Negro volcano during the past months (IGPEN)
Sunday, May 24, 2015
Seismic activity at the volcano has been decreasing during the past months. No other signs of volcanic unrest have been detected. [more]
Earthquake locations at Chiles volcano during 1-8 Jan 2015 (IGEPN)
Monday, Jan 19, 2015
Seismic activity remains high with an average of almost 1200 small quakes detected on a daily basis under the Chiles volcano. ... [more]
Histogram of earthquakes at Chiles volcano (IGPEN)
Monday, Dec 08, 2014
Seismic activity continues to be important. In the last week, almost 20,000 earthquakes with a daily average of 2845 were detected. 5 of them were felt by the local population, the largest one was a 3.8 event on 2 Dec at 17:58 local time. ... [more]
Thursday, Dec 04, 2014
The volcano's alert level was decreased to Yellow. Seismic remains above background, but has decreased significantly recently. [more]
Saturday, Nov 22, 2014
The seismic crisis that began last year continues at high intensity. During the ongoing swarm more than 206,000 earthquakes have been detected in an area 4 km south of the Chiles-Cerro Negro complex since 29 Sep alone. Daily numbers of quakes have ranged between 3700-5400 earthquakes. ... [more]

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