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Wednesday, Aug 15, 2018
Volcanic Ash Advisory Center Washington (VAAC) issued the following report: ... [more]
Wednesday, Jan 10, 2018
Volcanic Ash Advisory Center Washington (VAAC) issued the following report: ... [more]
 

Rincón de la Vieja volcano

Complex volcano 1916 m (6,286 ft)
Costa Rica, 10.83°N / -85.32°W
Current status: normal or dormant (1 out of 5)
Rincón de la Vieja webcams / live data | Reports
Rincón de la Vieja volcano books | Tours
Last update: 15 Aug 2018
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, 6 Oct
Sat, 6 Oct 00:35 UTCM 4.1 / 3 km9 km5 km al Oeste de Aguas Claras, Upala.
Mon, 1 Oct
Mon, 1 Oct 04:56 UTCM 2.8 / 148 km7 km4 km al Este de Bijagua, Upala.
Tue, 18 Sep
Tue, 18 Sep 10:30 UTCM 3.7 / 145 km14 km6 km al Norte de Aguas Claras, Upala.
Fri, 31 Aug
Fri, 31 Aug 16:19 UTCM 2.9 / 6 km8 km2 km al Oeste de Bijagua, Upala.
Wed, 29 Aug
Wed, 29 Aug 15:51 UTCM 3.8 / 6 km42 km9 km al Este de Filadelfia, Guanacaste.
View all recent quakes
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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