Cuicocha volcano, Ecuador: news & activity updates

Updated: Oct 9, 2025 14:09 GMT- refresh

Cuicocha volcano (Ecuador) - Smithsonian / USGS Weekly Volcanic Activity Report for 10 October-16 October 2018 (New Activity / Unrest)

Wed, 10 Oct 2018, 06:00

IG reported that, after an earthquake swarm consisting of 62 volcano-tectonic events during 2-3 October, seismicity at Cuicocha returned to background levels on 4 October. Carbon dioxide levels were normal, and deformation data did not show any anomalies. Read all

Cuicocha volcano (Ecuador) activity update: Increase in seismicity, but no cause for concern

Thu, 4 Oct 2018, 20:33

Lava domes in the lake of the active caldera, with much older and extinct Cotacachi stratovolcano in background. Credit: P. Ramós, IGEPN

The geophysical institute of Ecuador reports that seismicity at Cuicocha caldera has increased. 60 earthquakes, up to a magnitude of 2.5 have been recorded in the last two days. All are of the volcano-tectonic (VT) type, meaning they are caused by rocks breaking. The significance of this activity remains to be seen, but as it stands there is no concern; the volcano last erupted about 1,370 years ago; much more intense activity would be expected before any eruption.

Location of some of the earthquakes recorded. Credit: IGEPN.

Cuicocha volcano (Ecuador) - Smithsonian / USGS Weekly Volcanic Activity Report for 3 October-9 October 2018 (New Activity / Unrest)

Wed, 3 Oct 2018, 06:00

IG reported an increase in seismic activity at Cuicocha during 2-3 October, characterized by a total of 60 volcano-tectonic events recorded at the time of the report posting. The largest of these events, a M 2.5 at 1058 on 2 October, was reportedly slightly felt by a resident of Quiroga. Read all

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Cuicocha volcano

caldera 3246 m / 10,649 ft
Ecuador, 0.31°N / -78.36°W

Current status: normal or dormant (1 out of 5)

News/Updates | Earthquakes

Cuicocha volcano eruptions:
650 AD (?)
Typical eruption style
explosive

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