Costa Rica Volcanoes
Costa Rica has 10 Holocene volcanoes. Note that as a scientific organization we provide these listings for informational purposes only, with no international legal or policy implications. Volcanoes will be included on this list if they are within the boundaries of a country, on a shared boundary or area, in a remote territory, or within a maritime Exclusive Economic Zone. Bolded volcanoes have erupted within the past 20 years. Suggestions and data updates are always welcome ().
Volcano Name | Location | Last Eruption | Primary Volcano Type |
---|---|---|---|
Arenal | Costa Rica | 2010 CE | Stratovolcano |
Barva | Costa Rica | 6050 BCE | Complex |
Irazu | Costa Rica | 1977 CE | Stratovolcano |
Miravalles | Costa Rica | 1946 CE | Stratovolcano |
Orosi | Costa Rica | Unknown - Evidence Uncertain | Stratovolcano(es) |
Platanar | Costa Rica | Unknown - Evidence Credible | Stratovolcano(es) |
Poas | Costa Rica | 2019 CE | Stratovolcano |
Rincon de la Vieja | Costa Rica | 2022 CE | Complex |
Tenorio | Costa Rica | Unknown - Evidence Credible | Stratovolcano(es) |
Turrialba | Costa Rica | 2022 CE | Stratovolcano |
Chronological listing of known Holocene eruptions (confirmed or uncertain) from volcanoes in Costa Rica. Bolded eruptions indicate continuing activity.
Volcano Name | Start Date | Stop Date | Certainty | VEI | Evidence |
---|---|---|---|---|---|
Turrialba | 2021 Nov 3 | 2022 Mar 17 (continuing) | Confirmed | Historical Observations | |
Rincon de la Vieja | 2021 Jun 28 | 2022 Mar 17 (continuing) | Confirmed | Historical Observations | |
Turrialba | 2021 Jun 13 | 2021 Jul 23 | Confirmed | Historical Observations | |
Turrialba | 2020 Jun 18 | 2020 Aug 24 | Confirmed | 1 | Historical Observations |
Rincon de la Vieja | 2020 Jan 30 | 2020 Dec 13 | Confirmed | 2 | Historical Observations |
Poas | 2019 Feb 7 | 2019 Sep 30 | Confirmed | 2 | Historical Observations |
Rincon de la Vieja | 2018 Jul 28 | 2019 Jun 11 | Confirmed | 1 | Historical Observations |
Rincon de la Vieja | 2017 May 23 | 2018 Mar 15 ± 3 days | Confirmed | 2 | Historical Observations |
Poas | 2017 Apr 12 | 2017 Nov 6 | Confirmed | 1 | Historical Observations |
Poas | 2016 Jun 5 | 2016 Aug 16 | Confirmed | 1 | Historical Observations |
Rincon de la Vieja | 2015 Jun 16 | 2016 May 1 | Confirmed | 1 | Historical Observations |
Turrialba | 2015 Mar 8 | 2019 Dec 7 | Confirmed | 2 | Historical Observations |
Turrialba | 2014 Oct 29 | 2014 Dec 8 | Confirmed | 2 | Historical Observations |
Rincon de la Vieja | 2014 Sep 17 | 2014 Oct 24 | Confirmed | 1 | Historical Observations |
Turrialba | 2013 May 21 | 2013 Jun 4 | Confirmed | 2 | Historical Observations |
Rincon de la Vieja | 2012 Oct 17 | 2012 Oct 17 | Confirmed | 1 | Historical Observations |
Rincon de la Vieja | 2012 Feb 19 | 2012 Apr 14 | Confirmed | 1 | Historical Observations |
Turrialba | 2012 Jan 12 | 2012 Jan 18 | Confirmed | 2 | Historical Observations |
Rincon de la Vieja | 2011 Aug 22 | 2011 Sep 27 | Confirmed | 1 | Historical Observations |
Turrialba | 2011 Jan 14 | 2011 Jan 14 | Confirmed | 1 | Historical Observations |
Turrialba | [2010 Jul 24] | [2010 Aug 15] | Uncertain | ||
Turrialba | 2010 Jan 5 | 2010 Mar 7 (?) | Confirmed | 2 | Historical Observations |
Poas | 2009 Nov 16 ± 15 days | 2014 Oct 13 | Confirmed | 1 | Historical Observations |
Poas | 2009 Jan 12 | 2009 Mar 21 (?) | Confirmed | 1 | Historical Observations |
Poas | 2008 Jan 13 | 2008 Jan 13 | Confirmed | 1 | Historical Observations |
Poas | 2006 Sep 25 | 2006 Dec 16 | Confirmed | 1 | Historical Observations |
Poas | 2006 Mar 24 | 2006 Mar 24 (?) | Confirmed | 1 | Historical Observations |
Rincon de la Vieja | 1998 Feb 15 | 1998 Sep 16 ± 15 days | Confirmed | 2 | Historical Observations |
Poas | 1996 Apr 8 | 1996 Apr 8 | Confirmed | 1 | Historical Observations |
Rincon de la Vieja | 1995 Nov 6 | 1995 Nov 13 | Confirmed | 2 | Historical Observations |
Irazu | [1994 Dec 8] | [1994 Dec 8] | Uncertain | ||
Poas | 1994 Mar 16 (?) ± 15 days | 1994 Oct 16 (?) ± 15 days | Confirmed | 2 | Historical Observations |
Poas | 1992 Oct 16 ± 15 days | 1993 Sep 16 ± 15 days | Confirmed | 0 | Historical Observations |
Poas | 1992 Feb 16 ± 15 days | 1992 Mar 16 ± 15 days | Confirmed | 1 | Historical Observations |
Rincon de la Vieja | 1991 May 7 | 1992 Sep 16 ± 15 days | Confirmed | 2 | Historical Observations |
Poas | 1991 Mar 6 | 1991 Sep 16 ± 15 days | Confirmed | 1 | Historical Observations |
Poas | 1987 Jun 16 ± 15 days | 1990 Jun 16 ± 15 days | Confirmed | 2 | Historical Observations |
Rincon de la Vieja | 1987 Apr 1 | 1987 Apr 1 | Confirmed | 1 | Historical Observations |
Rincon de la Vieja | 1986 Dec 31 | 1986 Dec 31 | Confirmed | 1 | Historical Observations |
Rincon de la Vieja | 1985 Sep 16 ± 15 days | 1986 Apr 16 ± 15 days | Confirmed | 1 | Historical Observations |
Rincon de la Vieja | 1984 Mar 31 | 1984 Apr 16 ± 15 days | Confirmed | 2 | Historical Observations |
Rincon de la Vieja | 1983 Feb 6 | 1983 Feb 21 | Confirmed | 1 | Historical Observations |
Poas | 1981 Mar 16 ± 15 days | 1981 May 16 ± 15 days | Confirmed | 1 | Historical Observations |
Poas | 1980 Dec 26 | 1980 Dec 26 | Confirmed | 1 | Historical Observations |
Poas | 1980 Sep 12 | 1980 Sep 12 | Confirmed | 1 | Historical Observations |
Poas | 1979 Sep 8 | 1980 Jan 16 ± 15 days | Confirmed | 1 | Historical Observations |
Poas | 1978 Sep 22 | 1978 Dec 16 ± 15 days | Confirmed | 1 | Historical Observations |
Poas | 1977 Dec 18 | 1978 Jun 15 | Confirmed | 2 | Historical Observations |
Poas | 1977 May 16 ± 15 days | 1977 Jul 16 (?) ± 15 days | Confirmed | 1 | Historical Observations |
Irazu | 1977 Mar 3 | Unknown | Confirmed | 1 | Historical Observations |
Poas | 1976 Jun 21 | 1976 Nov 16 ± 15 days | Confirmed | 2 | Historical Observations |
Poas | 1974 Sep 11 | 1975 Feb 16 ± 15 days | Confirmed | 2 | Historical Observations |
Poas | 1972 Feb 9 | 1973 Sep 8 | Confirmed | 2 | Historical Observations |
Rincon de la Vieja | 1970 Aug 14 | 1970 Aug 15 | Confirmed | 1 | Historical Observations |
Poas | 1970 Jul 16 ± 15 days | Unknown | Confirmed | 1 | Historical Observations |
Rincon de la Vieja | 1969 Sep 20 | 1969 Oct 16 | Confirmed | 2 | Historical Observations |
Poas | 1969 May 3 | 1969 Jun 3 | Confirmed | 2 | Historical Observations |
Rincon de la Vieja | 1969 Apr 22 | 1969 May 16 ± 15 days | Confirmed | 2 | Historical Observations |
Arenal | 1968 Jul 29 | 2010 Dec 16 (?) ± 15 days | Confirmed | 3 | Historical Observations |
Poas | 1968 Jul 2 ± 182 days | Unknown | Confirmed | 1 | Historical Observations |
Poas | 1967 Jan 1 | Unknown | Confirmed | 1 | Historical Observations |
Rincon de la Vieja | 1966 Nov 6 (?) | 1967 Dec 16 ± 15 days | Confirmed | 3 | Historical Observations |
Poas | 1964 Dec 25 | 1965 Mar 16 ± 15 days | Confirmed | 2 | Historical Observations |
Poas | 1963 May 23 | 1963 Jul 2 | Confirmed | 2 | Historical Observations |
Irazu | 1963 Mar 13 | 1965 Feb 13 | Confirmed | 3 | Historical Observations |
Poas | 1958 Jul 2 ± 182 days | 1961 Jul 3 (?) | Confirmed | 2 | Historical Observations |
Poas | 1952 Mar 23 | 1957 Dec 25 | Confirmed | 2 | Historical Observations |
Poas | 1948 | 1951 Jul 2 ± 182 days | Confirmed | 1 | Historical Observations |
Poas | 1946 Nov 4 ± 4 days | Unknown | Confirmed | 1 | Historical Observations |
Miravalles | 1946 Sep 14 | 1946 Sep 14 | Confirmed | 1 | Historical Observations |
Poas | 1941 | 1946 | Confirmed | 1 | Historical Observations |
Irazu | 1939 May 18 | 1940 Feb | Confirmed | 2 | Historical Observations |
Irazu | 1933 Mar 22 (?) | 1933 Jul 25 | Confirmed | 2 | Historical Observations |
Poas | 1932 | 1934 | Confirmed | 1 | Historical Observations |
Irazu | 1930 Oct | Unknown | Confirmed | 2 | Historical Observations |
Poas | 1929 | Unknown | Confirmed | 1 | Historical Observations |
Irazu | 1928 Feb 14 | 1928 May 26 ± 5 days | Confirmed | 2 | Historical Observations |
Poas | 1925 | Unknown | Confirmed | 1 | Historical Observations |
Irazu | 1924 Mar | 1924 Apr | Confirmed | 2 | Historical Observations |
Arenal | 1922 Oct 5 (?) | 1922 Oct 23 (?) | Confirmed | 2 | Historical Observations |
Rincon de la Vieja | 1922 Apr 11 (in or before) | 1922 Jun 4 | Confirmed | 2 | Historical Observations |
Irazu | 1917 Sep 27 | 1921 | Confirmed | 3 | Historical Observations |
Rincon de la Vieja | [1917] | [Unknown] | Uncertain | ||
Poas | 1916 | Unknown | Confirmed | 2 | Historical Observations |
Arenal | [1915 Feb 5] | [Unknown] | Uncertain | ||
Poas | 1914 Oct 8 | 1915 May 15 (in or after) | Confirmed | 2 | Historical Observations |
Poas | 1914 May 30 | Unknown | Confirmed | 2 | Historical Observations |
Irazu | [1914 Feb 21] | [Unknown] | Uncertain | ||
Rincon de la Vieja | 1912 Jun 14 | Unknown | Confirmed | 3 | Historical Observations |
Poas | 1910 Sep 12 | 1910 Oct 14 | Confirmed | 1 | Historical Observations |
Poas | 1910 Jan 25 | 1910 Feb | Confirmed | 2 | Historical Observations |
Irazu | [1909] | [Unknown] | Uncertain | ||
Rincon de la Vieja | [1902 Jun 22] | [Unknown] | Uncertain | ||
Poas | 1898 Dec 29 | 1907 Dec 31 ± 365 days | Confirmed | 1 | Historical Observations |
Poas | 1895 | Unknown | Confirmed | 1 | Historical Observations |
Poas | 1888 Jan | 1891 | Confirmed | 1 | Historical Observations |
Irazu | 1886 | Unknown | Confirmed | 2 | Historical Observations |
Irazu | 1885 | Unknown | Confirmed | 2 | Historical Observations |
Irazu | [1882] | [Unknown] | Uncertain | ||
Poas | 1880 | Unknown | Confirmed | 1 | Historical Observations |
Poas | [1879] | [Unknown] | Uncertain | ||
Irazu | 1875 ± 5 years | Unknown | Confirmed | 2 | Historical Observations |
Barva | [1867 Mar] | [Unknown] | Uncertain | ||
Turrialba | 1866 Jan | 1866 May 8 | Confirmed | 3 | Historical Observations |
Irazu | 1864 Sep 16 | 1864 Sep 17 | Confirmed | 2 | Historical Observations |
Turrialba | 1864 Aug 17 | 1865 Mar | Confirmed | 2 | Historical Observations |
Turrialba | [1861] | [Unknown] | Uncertain | ||
Poas | 1860 | Unknown | Confirmed | 1 | Historical Observations |
Turrialba | 1855 May | Unknown | Confirmed | 2 | Historical Observations |
Rincon de la Vieja | 1854 | 1863 Aug | Confirmed | 2 | Historical Observations |
Rincon de la Vieja | 1853 | Unknown | Confirmed | 2 | Historical Observations |
Turrialba | 1853 | Unknown | Confirmed | 2 | Historical Observations |
Rincon de la Vieja | [1851] | [Unknown] | Uncertain | ||
Rincon de la Vieja | 1849 | Unknown | Confirmed | 2 | Unknown |
Irazu | 1847 May 18 | Unknown | Confirmed | 2 | Historical Observations |
Turrialba | [1847] | [Unknown] | Uncertain | ||
Rincon de la Vieja | 1844 May | Unknown | Confirmed | 2 | Unknown |
Irazu | [1844 May] | [Unknown] | Uncertain | ||
Irazu | 1842 | Unknown | Confirmed | 2 | Historical Observations |
Poas | [1838] | [Unknown] | Uncertain | ||
Poas | 1834 | Unknown | Confirmed | 2 | Historical Observations |
Poas | 1828 | Unknown | Confirmed | 1 | Historical Observations |
Irazu | [1826] | [Unknown] | Uncertain | ||
Irazu | 1823 | Unknown | Confirmed | 2 | Historical Observations |
Irazu | 1822 May 7 | Unknown | Confirmed | 2 | Historical Observations |
Irazu | [1821 May] | [Unknown] | Uncertain | ||
Irazu | 1775 (?) | Unknown | Confirmed | 2 | Historical Observations |
Rincon de la Vieja | 1765 | Unknown | Confirmed | 2 | Historical Observations |
Arenal | 1750 ± 50 years | Unknown | Confirmed | 0 | Tephrochronology |
Poas | 1747 | Unknown | Confirmed | 2 | Historical Observations |
Irazu | 1726 May | Unknown | Confirmed | 2 | Historical Observations |
Irazu | 1723 Feb 16 | 1724 Feb (?) | Confirmed | 3 | Historical Observations |
Turrialba | [1723] | [Unknown] | Uncertain | ||
Irazu | 1560 ± 75 years | Unknown | Confirmed | 3 | Radiocarbon (corrected) |
Rincon de la Vieja | [1529] | [Unknown] | Uncertain | ||
Arenal | 1440 (?) | Unknown | Confirmed | 2 | Radiocarbon (uncorrected) |
Arenal | 1400 (?) | Unknown | Confirmed | 4 | Radiocarbon (uncorrected) |
Turrialba | 1350 (?) | Unknown | Confirmed | Radiocarbon (uncorrected) | |
Poas | 1280 (?) | Unknown | Confirmed | Tephrochronology | |
Irazu | 1110 ± 100 years | Unknown | Confirmed | 3 | Radiocarbon (corrected) |
Arenal | 1030 (?) | Unknown | Confirmed | 4 | Tephrochronology |
Arenal | 1020 (?) | Unknown | Confirmed | 4 | Tephrochronology |
Arenal | 0750 ± 50 years | Unknown | Confirmed | 4 | Anthropology |
Arenal | 0700 (?) | Unknown | Confirmed | 4 | Tephrochronology |
Irazu | 0690 ± 40 years | Unknown | Confirmed | 3 | Radiocarbon (corrected) |
Arenal | 0650 ± 100 years | Unknown | Confirmed | 4 | Radiocarbon (corrected) |
Turrialba | 0640 ± 40 years | Unknown | Confirmed | Radiocarbon (corrected) | |
Arenal | 0550 (?) | Unknown | Confirmed | 4 | Tephrochronology |
Rincon de la Vieja | 0430 ± 100 years | Unknown | Confirmed | Radiocarbon (corrected) | |
Irazu | 0430 ± 500 years | Unknown | Confirmed | 3 | Radiocarbon (corrected) |
Arenal | 0400 (?) | Unknown | Confirmed | 4 | Anthropology |
Poas | 0210 (?) | Unknown | Confirmed | Tephrochronology | |
Turrialba | 0040 ± 50 years | Unknown | Confirmed | 4 | Radiocarbon (corrected) |
Arenal | 0170 BCE ± 200 years | Unknown | Confirmed | 4 | Radiocarbon (corrected) |
Arenal | 0270 BCE (?) | Unknown | Confirmed | 4 | Tephrochronology |
Arenal | 0380 BCE ± 200 years | Unknown | Confirmed | 4 | Radiocarbon (corrected) |
Irazu | 0640 BCE ± 500 years | Unknown | Confirmed | 3 | Radiocarbon (corrected) |
Poas | 0760 BCE ± 200 years | Unknown | Confirmed | Radiocarbon (corrected) | |
Arenal | 0830 BCE ± 500 years | Unknown | Confirmed | 0 | Tephrochronology |
Turrialba | 0830 BCE ± 150 years | Unknown | Confirmed | Radiocarbon (corrected) | |
Turrialba | 1120 BCE ± 200 years | Unknown | Confirmed | Tephrochronology | |
Arenal | 1250 BCE ± 200 years | Unknown | Confirmed | 4 | Radiocarbon (corrected) |
Turrialba | 1420 BCE ± 300 years | Unknown | Confirmed | Radiocarbon (corrected) | |
Arenal | 1450 BCE (?) | Unknown | Confirmed | 4 | Tephrochronology |
Arenal | 1650 BCE (?) | Unknown | Confirmed | 4 | Tephrochronology |
Arenal | 1770 BCE ± 100 years | Unknown | Confirmed | Radiocarbon (corrected) | |
Rincon de la Vieja | 1820 BCE ± 150 years | Unknown | Confirmed | 4 | Radiocarbon (corrected) |
Arenal | 2250 BCE (?) | Unknown | Confirmed | 4 | Tephrochronology |
Arenal | 2800 BCE (?) | Unknown | Confirmed | 4 | Tephrochronology |
Arenal | 3190 BCE ± 100 years | Unknown | Confirmed | Radiocarbon (uncorrected) | |
Arenal | 3350 BCE (?) | Unknown | Confirmed | 4 | Tephrochronology |
Arenal | 3900 BCE (?) | Unknown | Confirmed | 4 | Tephrochronology |
Poas | 3950 BCE (?) | Unknown | Confirmed | Radiocarbon (corrected) | |
Arenal | 4450 BCE (?) | Unknown | Confirmed | Tephrochronology | |
Miravalles | 5050 BCE (?) | Unknown | Confirmed | Tephrochronology | |
Arenal | 5060 BCE ± 150 years | Unknown | Confirmed | 4 | Radiocarbon (corrected) |
Poas | 5590 BCE ± 100 years | Unknown | Confirmed | Radiocarbon (uncorrected) | |
Barva | 6050 BCE ± 2000 years | Unknown | Confirmed | 4 | Tephrochronology |
Turrialba | 7260 BCE ± 300 years | Unknown | Confirmed | Radiocarbon (corrected) | |
Poas | 7620 BCE ± 100 years | Unknown | Confirmed | Radiocarbon (uncorrected) | |
Poas | 7920 BCE ± 75 years | Unknown | Confirmed | Radiocarbon (uncorrected) |
There are 181 photos available for volcanoes in Costa Rica.

Photo by William Melson, 1986 (Smithsonian Institution).

Photo by Ichio Moriya (Kanazawa University).

Photo by Federico Chavarria Kopper, 2000.

Photo by William Melson, 1968 (Smithsonian Institution).

Photo by Cindy Stine, 1989 (U.S. Geological Survey).

Copyrighted photo by Katia and Maurice Krafft, 1983.

Photo by Tom Simkin, 1968 (Smithsonian Institution).

Photo by Eliecer Duarte, 2001 (OVSICORI-UNA).

Photo by William Melson, 1985 (Smithsonian Institution).

Photo courtesy of Jorge Barquero (Universidad Nacional Costa Rica), 1956.

Photo by Jorge Barquero, 1998 (OVSICORI-UNA).

Photo by Jorge Barquero, 1998 (OVSICORI-UNA).

Photo by Federico Chavarria Kopper, 1999 (courtesy of Eduardo Malavassi, OVSICORI-UNA).

Photo by Mike Carr, 1982 (Rutgers University).

Photo by Guillermo Alvarado, (Instituto Costarricense de Electricidad).

Photo by Cindy Stine, 1989 (U.S. Geological Survey).

Copyrighted photo by Katia and Maurice Krafft, 1983.

Photo by William Melson, 1990 (Smithsonian Institution)

Photo by M. Esquivel, 1963 (published in Barquero, 1998).

Photo by Olger Aragón, 1992.

Aerofoto S. A., 1994 (published in Barquero, 1998).

Photo by William Melson, 1986 (Smithsonian Institution).

Photo by Gerardo Soto, 1989 (Instituto Costarricense de Electridad).

Photo by José Enrique Valverde Sanabria, 1999 (courtesy of Eduardo Malavassi, OVSICORI-UNA).

Photo by Bill Rose, 1982 (Michigan Technological University).

Photo by Jorge Barquero, 1985 (Universidad Nacional Costa Rica).

Photo by Mike Carr (Rutgers University).

Photo by William Melson (Smithsonian Institution).

Photo by Lee Siebert, 1998 (Smithsonian Institution).

Copyrighted photo by Katia and Maurice Krafft, 1983.

Photo by Jorge Barquero, 1998 (OVSICORI-UNA).

Photo by William Melson, 1970 (Smithsonian Institution).

Photo by Guillermo Alvarado (Instituto Costarricense de Electricidad).

Photo by Guillermo Alvarado (Instituto Costarricense de Electricidad).

Photo by William Melson, 1992 (Smithsonian Institution)

Photo by Federico Chavarria Kopper, 1999 (courtesy of Eduardo Malavassi, OVSICORI-UNA).

Photo by Stan Williams (Arizona State University, courtesy of Mike Carr, Rutgers University).

Photo by William Melson, 1993 (Smithsonian Institution).

Photo by Federico Chavarria Kopper, 1999 (courtesy of Eduardo Malavassi, OVSICORI-UNA).

Photo by Guillermo Alvarado (Instituto Costarricense de Electricidad).

Photo by Y. Monestel, 1968 (courtesy of Jorge Barquero, OVSICORI-UNA).

Photo by National Aeronautics and Space Administration (NASA), 1982.

Copyrighted photo by Katia and Maurice Krafft, 1983.

Photo courtesy of Tom Simkin, 1968 (Smithsonian Institution).

Copyrighted photo by Katia and Maurice Krafft, 1983.

Photo by Federico Chavarria Kopper, 1999.

Photo by José Enrique Valverde Sanabria, 1994 (courtesy of Eduardo Malavassi, OVSICORA-UNA).

Photo by Dick Stoiber, 1963 (Dartmouth College).

Photo by Guillermo Alvarado, 1987 (Instituto Costarricense de Electricidad).

Photo by Eliecer Duarte (OVSICORI-UNA).

Photo by Erick Fernandez, 1993 (OVSICORI-UNA).

Photo by William Melson, 1990 (Smithsonian Institution).

Photo by Dick Stoiber, 1963 (Dartmouth College).

Photo by Jorge Barquero, 1998 (OVSICORI-UNA).

Photo by William Melson, 1990 (Smithsonian Institution).

Photo by Guillermo Alvarado, 1985 (Instituto Coastarricense de Electricidad).

Photo by William Melson, 1988 (Smithsonian Institution).

Photo by Federico Chavarria Kopper, 1999.

Photo by Lee Siebert, 1998 (Smithsonian Institution).

Photo by Mike Carr, 1983 (Rutgers University).

Photo by Federico Chavarria Kopper, 1999 (courtesy of Eduardo Malavassi, OVSICORI-UNA).

Photo by William Melson, 1987 (Smithsonian Institution)

Photo by S. Racchini, 1977 (Universidad Nacional Costa Rica, courtesy of Jorge Barquero).

Photo by Ichio Moriya (Kanazawa University).

Photo by Paul Kimberly, 1988 (Smithsonian Institution).

Photo by Guillermo Alvarado (Instituto Costarricense de Electricidad).

Photo by Guillermo Alvarado, 1993 (Instituto Costarricense de Electricidad).

Photo by Olger Aragón, 1998.

Photo by Paul Kimberly, 1998 (Smithsonian Institution).

Photo by José Enrique Valverde Sanábria, 1998 (courtesy of Eduardo Malavassi, OVSICORI-UNA).

Copyrighted photo by Katia and Maurice Krafft, 1983.

Photo by Gerardo Soto, 1988 (Instituto Costarricense de Electridad).

Photo by Eliecer Duarte (OVSICORI-UNA).

Photo by Jorge Barquero (Universidad Nacional Costa Rica).

Photo by William Melson, 1969 (Smithsonian Institution)

Photo by Raul Mora, 2002 (University of Costa Rica).

Photo by William Melson, 1968 (Smithsonian Institution).

Photo by Federico Chavarria Kopper, 1995 (courtesy of Eduardo Malavassi, OVSICORI-UNA).

Photo by Ichio Moriya (Kanazawa University).

Photo by Federico Chavarria Kopper, 1999.

Photo by Eliecer Duarte (OVSICORI-UNA).

Photo by Federico Chavarria Kopper, 1998.

Photo by Federico Chavarria Kopper, 1999.

Photo by Paul Kimberly, 1998 (Smithsonian Institution).

Photo by Eliecer Duarte (OVSICORI-UNA).

Photo by Federico Chavarria Kopper, 2001.

Photo by Eliecer Duarte (OVSICORI-UNA).

Photo by Federico Chavarria Kopper, 2004.

Photo by Paul Kimberly, 1998 (Smithsonian Institution).

Photo by William Melson, 1989 (Smithsonian Institution)

Photo by S. Mora, 1988 (courtesy of Guillermo Alvarado, Instituto Costarricense de Electricidad).

Photo by Guillermo Alvarado, 1987 (Instituto Costarricense de Electricidad).

Photo by Tom Simkin, 1968 (Smithsonian Institution).

Photo by Guillermo Alvarado (Instituto Costarricense de Electricidad).

Photo by McDiarmid, 1991 (courtesy of William Melson, Smithsonian Institution).

Photo by Cindy Stine, 1989 (U.S. Geological Survey).

Photo by William Melson, 1990 (Smithsonian Institution)

Photo by Dick Berg, 1969 (courtesy of William Melson, Smithsonian Institution).

Photo by Eliecer Duarte (OVSICORI-UNA).

Photo by William Melson, 1968 (Smithsonian Institution).

Photo by Jorge Barquero, 1998 (OVSICORI-UNA).

Photo by Jorge Barquero (OVSICORI-UNA).

Photo by Eliecer Duarte, 2003 (OVSICORI-UNA).

Photo by Eliecer Duarte (OVSICORI-UNA).

Photo by Jorge Barquero, 1989 (Universidad Nacional Costa Rica).

Photo by William Melson, 1988 (Smithsonian Institution)

Copyrighted photo by Katia and Maurice Krafft, 1983.

Photo by S. Racchini, 1977 (Universidad Nacional Costa Rica, courtesy of Jorge Barquero).

Photo by Lee Siebert, 1998 (Smithsonian Institution).

Photo by Federico Chavarria Kopper, 1999 (courtesy of Eduardo Malavassi, OVSICORA-UNA).

Photo by Gerardo Soto, 1989 (Instituto Costarricense de Electricidad, published in Alvarado, 1989).

Photo by Erick Fernandez, 1998 (OVSICORI-UNA).

Photo by William Melson, 1968 (Smithsonian Institution).

Photo by Lee Siebert, 1998 (Smithsonian Institution).

Photo by William Melson, 1969 (Smithsonian Institution).

Photo by Eliecer Duarte (OVSICORI-UNA).

Photo by Federico Chavarria Kopper, 2000.

Photo by E. Valverde, 1988 (published in Barquero, 1998)

Photo by William Melson, 1981 (Smithsonian Institution).

Photo by José Enrique Valverde Sanabria, 1996 (courtesy of Eduardo Malavassi, OVSICORI-UNA).

Photo by William Melson, 1968 (Smithsonian Institution)

Photo by Lee Siebert, 1998 (Smithsonian Institution).

Photo by Federico Chavarria Kopper, 1999.

Photo by Ichio Moriya (Kanazawa University).

Photo by Dick Berg, 1969 (courtesy of William Melson, Smithsonian Institution).

Photo by Lee Siebert, 1998 (Smithsonian Institution).

Photo by William Melson, 1969 (Smithsonian Institution).

Photo by U.S. Geological Survey, 1964.

Copyrighted photo by Katia and Maurice Krafft, 1983.

Photo by Lee Siebert, 1998 (Smithsonian Institution).

Photo by William Melson, 1993 (Smithsonian Institution)

Photo by Lee Siebert, 1998 (Smithsonian Institution).

Photo by José Enrique Valverde Sanabria, 1987 (courtesy of Eduardo Malavassi, OVSICORA-UNA).

Photo by William Melson, 1986 (Smithsonian Institution).

Photo by William Melson, 1985 (Smithsonian Institution).

Anonymous, 1917 (published in Alvarado, 1989).

Photo by William Melson, 1968 (Smithsonian Institution)

Photo by Olger Aragón, 1997.

Anonymous photo (published in Alvarado, 1989).

Photo by William Melson, 1986 (Smithsonian Institution).

Photo by Federico Chavarria Kopper, 1999.

Photo by Eliecer Duarte (OVSICORI-UNA).

Photo by Paul Kimberly, 1998 (Smithsonian Institution).

Photo by Eduardo Malavassi, 1981 (OVSICORA-UNA)

Photo by William Melson, 1968 (Smithsonian Institution).

Photo by Guillermo Alvarado (Instituto Costarricense de Electricidad).

Photo by Guillermo Alvarado, 1986 (Instituto Costarricense de Electricidad).

Photo by R. Fernandez Peralta, 1915 (courtesy of Jorge Barquero, Universidad Nacional Costa Rica).

Photo by Ichio Moriya (Kanazawa University).

Photo by William Melson, 1968 (Smithsonian Institution).

Photo by W. Schaer (published in Barquero, 1998).

Photo by W. Schaer (published in Barquero, 1998).

Photo by Dick Berg, 1968 (courtesy of William Melson, Smithsonian Institution).

Photo by Federico Chavarria Kopper, 1996.

Photo by Paul Kimberly, 1998 (Smithsonian Institution).

Photo by Paul Kimberly, 1998 (Smithsonian Institution).

Photo by Cindy Stine, 1989 (U.S. Geological Survey).

Copyrighted photo by Katia and Maurice Krafft, 1983.

Photo by Guillermo Alvarado (Instituto Costarricense de Electricidad).

Photo by National Aeronautical and Space Administration (NASA), 1982.

Photo by Mike Carr, 1983 (Rutgers University).

Photo by Guillermo Alvarado (Instituto Costarricense de Electricidad).

Anonymous, 1964 (published in Alvarado, 1989).

Photo by Ichio Moriya (Kanazawa University).

Photo by Gerardo Soto (published in Alvarado, 1989).

Photo by Federico Chavarria Kopper, 1999.

Photo by José Enrique Valverde Sanabria, 1996 (courtesy of Eduardo Malavassi, OVSICORI-UNA).

Photo by M. Esquivel (published in Barquero, 1998).

Copyrighted photo by Katia and Maurice Krafft, 1983.

Photo by Federico Chavarria Kopper, 1999 (courtesy of Eduardo Malavassi, OVSICORI-UNA).

Photo by Jorge Barquero, 1994 (Universidad Nacional Costa Rica).

Photo by Jorge Barquero, 1987 (OVSICORI-UNA).

Photo by Ichio Moriya (Kanazawa University).

Photo by José Tristan, 1922 (courtesy of Jorge Barquero).

Photo by Eliecer Duarte, 2003 (OVSICORI-UNA).

Photo by William Melson, 1988 (Smithsonian Institution)

Photo by Eliecer Duarte, 2003 (OVSICORI-UNA).

Photo by Jorge Barquero, 1990 (Universidad Nacional Costa Rica).

Photo by Jorge Barquero (Universidad Nacional Costa Rica).

Photo by Lee Siebert, 1998 (Smithsonian Institution).

Photo by William Melson, 1992 (Smithsonian Institution).
This is a compilation of Costa Rica volcano information sources, such as official monitoring or other government agencies.
Volcanic Ash Advisory Center | |
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Washington Volcanic Ash Advisory Center (VAAC) | |
- Washington VAAC Archive | |
- Washington VAAC Notices |