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Latest news:

Tuesday, May 03, 2016
OVSICORI-UNA reported that a moderate hydrothermal explosion occurred at 14:37 local time on 1 May in the volcano's crater lake. The seismic network recorded the explosion for 11 minutes. [more]
Sunday, Apr 03, 2016
A smaoo eruption, probably phreatic, occurred on 30 March, ejecting a small ash plume. [more]
 

Rincón de la Vieja volcano

Complex volcano 1916 m (6,286 ft)
Costa Rica, 10.83°N / -85.32°W
Current status: minor activity or eruption warning (3 out of 5)
Rincón de la Vieja webcams / live data
Rincón de la Vieja volcano books | Tours
Last update: 3 May 2016 (sproadic hydrothermal explosions)
Typical eruption style:

Explosive.


Rincón de la Vieja volcano eruptions: 1529(?), 1765, 1844, 1849, 1851(?), 1853-54, 1860, 1861-63, 1902(?), 1912, 1917(?), 1922, 1966-67, 1969, 1969, 1970, 1983, 1984, 1985-86, 1987, 1991-92, 1995, 1998 (Feb.-Sep.), 2011-2012, 2014, 2015-ongoing
TimeMag. / DepthDistanceLocation
Sat, 11 Mar
Sat, 11 Mar 22:44 UTCM 2.3 / 65 km46 km7 km al Oeste de Nacascolo, Guanacaste.
Rincón de la Vieja is the largest volcano in NW Costa Rica and one of its most active ones.

Background:

It is a remote volcanic complex in the Guanacaste Range, consisting of an elongated, arcuate NW-SE-trending ridge that was constructed within the 15-km-wide, about 9,000 years-old Guachipelín caldera, whose rim is exposed on the south side.
Rincón de la Vieja, sometimes known as the "Colossus of Guanacaste," has an estimated volume of 130 cu km and contains at least 9 major eruptive centers.
Activity has migrated to the SE, where the youngest-looking craters are located. The twin cone of 1916-m-high Santa María volcano, the highest peak of the Rincón complex, is located at the eastern end of a smaller, 5-km-wide caldera and has a 500-m-wide crater.
A plinian eruption producing the 0.25 cu km Río Blanca tephra about 3500 years ago was the last major magmatic eruption from the volcano. All subsequent eruptions, including numerous historical eruptions possibly dating back to the 16th century, have been from the prominent crater containing a 500-m-wide acid lake (known as the Active Crater) located ENE of Von Seebach crater.
Source: GVP, Smithsonian Institution


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