Stratovolcano 2708 m (8,884 ft)
Costa Rica, 10.2°N / -84.23°W
Poas webcams / live data
Poas volcano eruptions:
1828, 1834, 1838(?), 1860, 1879(?), 1880, 1888-91, 1895, 1898-1907, 1910, 1910, 1914, 1914-15, 1925, 1929, 1941-46, 1948-51, 1952-57, 1958-61, 1963, 1964-65, 1967, 1969, 1970, 1972-73, 1974-75, 1976, 1977, 1977-78, 1978, 1979-80, 1980, 1981, 1987-90, 1991, 1992, 1992-93, 1994, 1996, 2010, 2011, 2012, 2013, 2014
Typical eruption style:
Phreatic eruptions, sometimes geyser-like ejections of water from the acid crater lake.
Last earthquakes nearby
Volcano news: Poás volcano, Costa Rica
Tue, 14 Oct 08:41
Today's phreatic eruption of Poás volcano (OVSICORI-UNA webcam)
A strong phreatic explosion occurred this morning at the crater lake, ejecting mud and water to more than 200 m height and reaching the observation platform. ...more
Fri, 29 Aug 16:32
The first of 3 phreatic explosions at Poás
A series of 3 phreatic explosions occurred at the crater lake after 14:45 local time on Wednesday. The eruptions followed a phase of relative calm during the past months and ejected jets of steam and mud to heights of approx. 100-200 m.
The third phreatic eruption at the volcano
Mon, 23 Jun 08:11
Series of images from a phreatic eruption at Poás on 20 June (OVSICORI)
Phreatic explosions from the acid crater lake continue to occur at the volcano. During a field campaign on 18 June, OVSICORI scientists observed 5 eruptions during 3 hours. Some of them damaged solar panels of measuring instruments. ...more
Sun, 30 Mar 09:16
Phreatic eruption at Poás volcano Friday morning (OVSICORI-UNA webcam)
Another small phreatic eruption occurred from the volcano's crater lake Friday morning.
Thu, 20 Mar 17:52
Phreatic explosion at Poàs volcano yesterday morning (Ovsicori webcam)
Another moderately sized phreatic eruption from the crater lake of the volcano took place yesterday morning at 07:08 local time. ...more
Wed, 26 Feb 16:05
Phreatic eruption at Poás volcano yesterday (OVSICORI-UNA webcam)
An impressive phreatic eruption took place at the volcano yesterday shortly after noon (local time). So-called cypressoide-type jets of water, mud, and solid blocks were ejected in circular directions from the crater lake to heights of approx. 400 m. The webcam that captured the event was covered with mud. ...more
Thu, 20 Feb 17:29
Small mud eruption at Poás on 14 Feb (Image: OVSICOR-UNA via faceook)
A very small phreatic or hydrothermal eruption occurred a week ago. OVSICORI-UNA shared a picture showing a geyser-like ejection of mud from the crater lake. Activity in any case seems to have risen. Karin Leonard who lives at Poas wrote us: ...more
Thu, 22 Aug 08:56
Phreatic activity at Poás on 20 Aug 2013 (OVSICORI)
A series of small phreatic eruptions occurred on 20 August at the crater lake. The first occurred at 09:55 (local time), ejecting mud and water to 2-3 m height, and a second one, more powerful, at 11:16 reached heights of 10-20 m.
Fri, 3 May 10:05
A phreatic explosion occurred from the crater lake on 1 May.
Wed, 1 May 06:13
Yesterday's signal from Poás volcano
A small earthquake swarm occurred yesterday, probably caused by fluid movements bringing heat into the crater lake. Seismicity has calmed down today again.
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