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Stratovolcano 2708 m (8,884 ft)
Costa Rica, 10.2°N / -84.23°W
: minor activity or eruption warning
(3 out of 5)
Poas webcams / live dataPoas volcano books | Tours
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
Latest satellite images
Volcano news: Poás volcano, Costa Rica
Thu, 28 Jul 2016, 12:05
A small phreatic eruption occurred from the hot crater lake in the morning (08:19 local time) on 25 July and ejected material to 50 m above the crater lake's surface.
Sun, 10 Jul 2016, 12:05
Phreatic explosion at Poás last week (OVSICORI-UNA)
The volcano remains highly restless, the hydrothermal system probably being disturbed by a shallow magma body. ...more
Mon, 6 Jun 2016, 13:26
Small explosion plume from Poás yesterday
A small phreatic explosion occurred at the crater lake yesterday morning at 09:20 local time showing that the hydrothermal system of the volcano remains at elevated unrest.
Beginning of explosion at Poas (image: ginovolcanico / instagram)
Tue, 14 Oct 2014, 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 2014, 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.
Mon, 23 Jun 2014, 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 2014, 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 2014, 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 2014, 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 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: ...more
Show more news
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