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What was erupting in the year...?

There were 80 confirmed eruptions at some point during 2012 from 74 different volcanoes; 38 of those were new eruptions that started during the year. A stop date with "(continuing)" indicates that the eruption was considered to be ongoing as of the date indicated. Data is reported through the last data update (11 July 2019). Information about more recent eruptions can be found in the Smithsonian / USGS Weekly Volcanic Activity Report.

Volcano Country Eruption Start Date Eruption Stop Date Max VEI
San Cristobal Nicaragua 2012 Dec 26 2012 Dec 28 2
Copahue Chile-Argentina 2012 Dec 22 2013 Dec 10 2
Langila Papua New Guinea 2012 Dec 1 2012 Dec 5 1
Tolbachik Russia 2012 Nov 27 2013 Sep 5 ± 10 days 4
Tongariro New Zealand 2012 Nov 21 2012 Nov 21 2
Chirpoi Russia 2012 Nov 11 2016 Oct 18 (?) 0
Ulawun Papua New Guinea 2012 Nov 6 2012 Dec 11 1
Pagan United States 2012 Oct 30 2012 Dec 11 (?) 2
Rincon de la Vieja Costa Rica 2012 Oct 17 2012 Oct 17 1
Paluweh Indonesia 2012 Oct 8 2013 Oct 31 ± 7 days 2
Alaid Russia 2012 Oct 5 2012 Dec 12 2
Marapi Indonesia 2012 Sep 26 2012 Sep 26 1
Lokon-Empung Indonesia 2012 Sep 15 2013 Sep 9 2
Gamalama Indonesia 2012 Sep 15 2012 Sep 17 1
San Cristobal Nicaragua 2012 Sep 8 2012 Sep 15 2
Heard Australia 2012 Sep 5 ± 4 days 2019 Jun 10 (continuing) 0
Klyuchevskoy Russia 2012 Sep 1 (?) 2013 Jan 28 ± 3 days 1
Soputan Indonesia 2012 Aug 26 2012 Sep 19 3
Etorofu-Yakeyama [Grozny Group] Japan - administered by Russia 2012 Aug 16 2012 Aug 25 2
White Island New Zealand 2012 Aug 7 2013 Oct 11 2
Tongariro New Zealand 2012 Aug 6 2012 Aug 7 2
Monowai New Zealand 2012 Aug 3 2012 Aug 4 0
Havre Seamount New Zealand 2012 Jul 17 2012 Jul 19 1
Saunders United Kingdom 2012 Jun 30 (?) 2012 Nov 22 (?) 0
Karangetang Indonesia 2012 May 14 2013 Sep 5 2
Galeras Colombia 2012 May 13 2014 Jan 30 ± 1 days 2
Sirung Indonesia 2012 May 8 2012 May 12 2
Ulawun Papua New Guinea 2012 May 7 2012 May 31 1
Witori Papua New Guinea 2012 May 3 2012 Jul 11 2
Masaya Nicaragua 2012 Apr 30 2012 Jun 8 1
Marapi Indonesia 2012 Mar 1 ± 3 days 2012 May 18 1
Nevado del Ruiz Colombia 2012 Feb 22 2013 Jul 12 (?) 3
Rincon de la Vieja Costa Rica 2012 Feb 19 2012 Apr 14 1
Kanaga United States 2012 Feb 18 2012 Feb 18 2
Ioto Japan 2012 Feb 10 2012 May 2 1
Karkar Papua New Guinea 2012 Feb 1 2012 Feb 1 3
Turrialba Costa Rica 2012 Jan 12 2012 Jan 18 2
Lewotolo Indonesia 2012 Jan 2 2012 Jan 14 1
Zubair Group Yemen 2011 Dec 18 2012 Jan 12 2
Tungurahua Ecuador 2011 Nov 27 2016 Mar 16 3
Nyamuragira DR Congo 2011 Nov 6 2012 Mar 16 (?) 2
Hierro Spain 2011 Oct 10 2012 Mar 5 2
Krakatau Indonesia 2011 Jul 31 2012 Sep 9 ± 1 days 2
Cleveland United States 2011 Jul 19 ± 7 days 2015 Aug 18 2
Lokon-Empung Indonesia 2011 Jun 26 2012 May 1 2
Ol Doinyo Lengai Tanzania 2011 Jun 22 (in or before) 2014 Jul 15 ± 10 days 0
Nabro Eritrea 2011 Jun 13 2012 Jun 3 (?) 4
Sangay Ecuador 2011 Jun 6 2012 Sep 19 2
Puyehue-Cordon Caulle Chile 2011 Jun 4 2012 Apr 21 (?) 5
Semeru Indonesia 2011 May 13 2012 Jul 20 (?) 2
Tengger Caldera Indonesia 2010 Nov 26 2012 Jun 13 3
Kizimen Russia 2010 Nov 11 (?) 2013 Sep 13 (?) 3
Merapi Indonesia 2010 Oct 26 2012 Jul 15 4
Etna Italy 2010 Aug 25 2013 Apr 27 1
Manam Papua New Guinea 2010 Aug 10 (?) 2013 Dec 15 (in or after) 2
Bezymianny Russia 2010 May 21 (?) 2019 Jul 7 (continuing) 3
Villarrica Chile 2009 Nov 22 2012 Apr 20 1
Poas Costa Rica 2009 Nov 16 ± 15 days 2014 Oct 13 1
Nevado del Huila Colombia 2008 Oct 26 (?) 2012 Jan 14 (?) 3
Reventador Ecuador 2008 Jul 27 2019 Jul 11 (continuing) 2
Ambrym Vanuatu 2008 May 23 2018 Dec 17 2
Ibu Indonesia 2008 Apr 5 2019 Jul 11 (continuing) 1
Batu Tara Indonesia 2007 Jan 17 (?) 2015 Nov 26 2
Soufriere Hills United Kingdom 2005 Apr 15 2013 Feb 5 3
Popocatepetl Mexico 2005 Jan 9 2019 Jul 11 (continuing) 2
Suwanosejima Japan 2004 Oct 23 2019 Jul 11 (continuing) 2
Tofua Tonga 2004 Mar 19 2014 Oct 18 1
Nyiragongo DR Congo 2002 May 17 (?) 2019 Jul 11 (continuing) 2
Fuego Guatemala 2002 Jan 4 2019 Jul 11 (continuing) 3
Karymsky Russia 2001 Nov 15 2016 Apr 1 3
Bagana Papua New Guinea 2000 Feb 28 (in or before) 2019 Jul 7 (continuing) 2
Sheveluch Russia 1999 Aug 15 2019 Jul 11 (continuing) 4
Kilauea United States 1983 Jan 3 2018 Sep 5 3
Erebus Antarctica 1972 Dec 16 (in or before) ± 15 days 2019 Jul 8 (continuing) 2
Erta Ale Ethiopia 1967 Jul 2 (in or before) ± 182 days 2019 Jul 7 (continuing) 0
Aira Japan 1955 Oct 13 2016 Aug 22 3
Stromboli Italy 1934 Feb 2 2019 Jul 11 (continuing) 2
Dukono Indonesia 1933 Aug 13 2019 Jul 11 (continuing) 3
Santa Maria Guatemala 1922 Jun 22 2019 Jul 11 (continuing) 3
Yasur Vanuatu 1774 Jul 2 (in or before) ± 182 days 2019 Jul 11 (continuing) 3

List of Questions

Global Volcanism Program, 2013. Volcanoes of the World, v. 4.8.2. Venzke, E (ed.). Smithsonian Institution. Downloaded 25 Aug 2019. https://doi.org/10.5479/si.GVP.VOTW4-2013