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Latest news from Poas volcano:
Today's phreatic eruption of Poás volcano (OVSICORI-UNA webcam)
Dienstag, Okt 14, 2014
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. ... [mehr]
The first of 3 phreatic explosions at Poás
Freitag, Aug 29, 2014
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. [mehr]

Poas Vulkan

Schichtvulkan 2708 m (8,884 ft)
Costa Rica, 10.2°N / -84.23°W
Aktueller Status: Schwache Aktivität oder Ausbruchswarnung (3 von 5)
Poas Webcams / aktuelle Daten
Letztes Update: 24 Aug 2015 (phreatic explosions)
Typische Aktivität: Phreatic eruptions, sometimes geyser-like ejections of water from the acid crater lake.
Ausbrüche des Poas: 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
UhrzeitMag. / TiefeDistanceOrt
Sat, 21 Nov
Sat, 21 Nov 15:34 UTCM 3.0 / 14.8 km10 km Nicaragua
Sat, 31 Oct
Sat, 31 Oct 15:20 UTCM 2.4 / 19.5 km18 km Nicaragua
Sat, 31 Oct 15:17 UTCM 1.3 / 17.4 km19 km Nicaragua
Sat, 31 Oct 15:10 UTCM 4.6 / 16 km12 km COSTA RICA
Sat, 31 Oct 15:10 UTCM 4.0 / 25.9 km18 km Nicaragua
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Poás is one of Costa Rica´s most active volcanoes, and one of its most frequently visited and prominent ones. It contains a green acid crater lake and during some of its frequent phreatic eruptions, water from the lake is ejected like a geyser.


The broad, well-vegetated edifice of Poás has three craters in a N-S line. The 2708-m-high basaltic-to-dacitic complex stratovolcano is cut by a N-S-trending fissure that extends to the lower northern flank, where a parasite volcano (the Congo stratovolcano) and several explosion craters, or maars, most of them lake-filled, have been created.
Poás has two summit crater lakes. The southermost one, Botos, is cold, clear has not eruptied for about 7500 years. The other crater lake is geothermally heated and -after Kawah Ijen in Indonesia - is probably the world's second most acidic natural lake. Its pH is near zero.
Source: GVP, Smithsonian Institution

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