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Poas volcano
Stratovolcano 2708 m (8,884 ft)
Costa Rica, 10.2°N / -84.23°W
Current status: restless (2 out of 5)
Poas webcams / live data | Reports
Books
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, 2016, 2017
Typical eruption style:
Phreatic eruptions, sometimes geyser-like ejections of water from the acid crater lake.
Last earthquakes nearby
Latest satellite images

Sentinel hub | Landsat 8
 

Volcano news: Poás volcano, Costa Rica

Poás volcano (Costa Rica): phreatic eruption yesterday covers webcam with mud

Wed, 26 Feb 2014, 16:05
16:05 PM | BY: T
Phreatic eruption at Poás volcano yesterday (OVSICORI-UNA webcam)
Phreatic eruption at Poás volcano yesterday (OVSICORI-UNA webcam)
Glow from the fumaroles at the lake shore at night
Glow from the fumaroles at the lake shore at night
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.
According OVSICORI-UNA, seismicity has not shown significant changes, although the phreatic explosion left a signal. However, one should keep in mind, that this type of activity can and usually does occur with no warning; the crater area of Poás must currently be regarded as a high-risk zone.
The fumarole at the lake shore is emitting glow at night, indicating high temperature gasses escaping there.
Previous news
Thu, 20 Feb 2014, 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: ... read all
Thu, 22 Aug 2013, 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. ... read all
Fri, 3 May 2013, 10:05
A phreatic explosion occurred from the crater lake on 1 May. ... read all
Wed, 1 May 2013, 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. ... read all
Sat, 20 Apr 2013, 08:34
Minor volcanic unrest that had affected the volcano in the past days seems to be over. ... read all
 

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