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Latest news from Turrialba volcano:

Saturday, Aug 04, 2018
Volcanic Ash Advisory Center Washington (VAAC) issued the following report: ... [more]
Satellite image of Turrialba volcano on  2 Aug 2018
Thursday, Aug 02, 2018
Volcanic Ash Advisory Center Washington (VAAC) issued the following report: ... [more]
 

Turrialba volcano

Stratovolcano 3340 m (10,958 ft)
Costa Rica, 10.03°N / -83.77°W
Current status: minor activity or eruption warning (3 out of 5)
Turrialba webcams / live data | Reports
Turrialba volcano books | Tours
Last update: 4 Aug 2018
Typical eruption style: Explosive.
Turrialba volcano eruptions: 1723(?), 1847(?), 1853, 1855, 1861(?), 1864-65, 1866, 2010 (Jan 4) - ongoingTurrialba volcano seen from Irazu
TimeMag. / DepthDistanceLocation
Mon, 13 Aug
Mon, 13 Aug 08:45 UTCM 3.0 / 11 km20 km2 km al Sur de Alegria, Siquirres.
Thu, 9 Aug
Thu, 9 Aug 07:33 UTCM 3.0 / 3 km4 km12 km al Noroeste de Santa Cruz, Turrialba.
Tue, 7 Aug
Tue, 7 Aug 21:38 UTCM 3.5 / 11 km32 km COSTA RICA
Tue, 7 Aug 15:20 UTCM 2.8 / 14 km34 km5 km al Norte de Santa Maria de Dota.
Sun, 5 Aug
Sun, 5 Aug 23:10 UTCM 2.7 / 5 km10 km1 km al Sureste de Cot, Oreamuno.
View all recent quakes
Turrialba (3340 m) is the easternmost of Costa Rica's active volcanoes. It is a large stratovolcano with a complex of 3 summit craters and its flanks mostly covered by farmland and forest. vegetation. After its previous eruption in 1866, signs of unrest started in 2006 and new phreatic activity began on Jan 4, 2010.

Background:

Turrialba is the easternmost of Costa Rica's active volcanoes and a large vegetated basaltic-to-dacitic stratovolcano. It is located opposite Irazú volcano, both being separated by a broad saddle.
Together with Irazú, Turrialba is one of Costa Rica's largest volcanoes. During the past 3500 years in prehistoric times, it has had at least 5 larger explosive eruptions. The top of Turrialba has 3 craters at the upper SW end of a broad 800 x 2200 m wide summit depression breached to the NE.
Eruptions from Turrialba occurred mostly from the summit craters, although two flank cones are found on the SW flank. During the 19th century, a few eruptions occurred that produced pyroclastic flows. Since an eruption in 1866 and until 2006, Turrialba was quiescent, but showed strong fumarolic activity at the central craters.
Since 2006, increased fumarolic and seismic activity were noted. On Jan 4, 2010, two new vents that later merged into a fissure aligned along the tectonic trend of the summit area opened in its western crater and started to erupt large amounts of sulphur dioxide gas and occasional lithic ash. This phreatic activity was accompanied by strong tremors and continued for a few days, but declined since Jan 8. Ash fall in the surroundings of the volcano and acid rain caused damage to agriculture and prompted evacuation of about 30 inhabitants living in the immediate vicinity of the volcano.


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