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Poas volcano
Stratovolcano 2708 m (8,884 ft)
Costa Rica, 10.2°N / -84.23°W
Current status: erupting (4 out of 5)
Poas webcams / live data
Poas 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
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Volcano news: Poás volcano, Costa Rica

Poás volcano (Costa Rica): small phreatic explosions, evacuations

Monday Apr 10, 2017 07:48 AM | BY: T

Recent activity of Poás volcano (image: OVSICORI-UNA)
Recent activity of Poás volcano (image: OVSICORI-UNA)
The activity of the volcano has increased recently. On Saturday, several small phreatic (steam-driven) explosions occurred at the crater lake and scientists measured elevated gas emission rates and raised temperatures.
According to a new article, a large group of tourists was evacuated from the volcano, some of which suffered eye and throat irritations caused by the volcanic gasses.
A new degassing vent had been observed at the shore of the lake which also changed color.
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Links / Sources:
Previous news
Thursday, Jul 28, 2016
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. [more]
Phreatic explosion at Poás last week (OVSICORI-UNA)
Sunday, Jul 10, 2016
The volcano remains highly restless, the hydrothermal system probably being disturbed by a shallow magma body. ... [more]
Small explosion plume from Poás yesterday
Monday, Jun 06, 2016
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. [more]
Today's phreatic eruption of Poás volcano (OVSICORI-UNA webcam)
Tuesday, Oct 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. ... [more]
The first of 3 phreatic explosions at Poás
Friday, 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. [more]

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