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What was erupting in the year...?

There were 63 confirmed eruptions at some point during 1985 from 54 different volcanoes; 29 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 (17 March 2022). 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
Etna Italy 1985 Dec 19 1985 Dec 31 1
Kavachi Solomon Islands 1985 Dec 9 1986 Feb 28 ± 3 days 1
Concepcion Nicaragua 1985 Dec 2 ± 1 days 1986 Apr 20 (?) 1
Ulawun Papua New Guinea 1985 Nov 17 1985 Nov 22 3
San Miguel El Salvador 1985 Nov 16 ± 15 days 1986 Feb 16 (in or after) ± 15 days 1
Ruapehu New Zealand 1985 Nov 15 1985 Nov 15 1
Kanlaon Philippines 1985 Oct 5 1985 Dec 7 1
Suwanosejima Japan 1985 Sep 16 ± 15 days 1987 Jun 16 ± 15 days 2
Rincon de la Vieja Costa Rica 1985 Sep 16 ± 15 days 1986 Apr 16 ± 15 days 1
Nevado del Ruiz Colombia 1985 Sep 11 1991 Jul 13 3
Raung Indonesia 1985 Aug 23 1986 Feb 28 2
Klyuchevskoy Russia 1985 Aug 16 1986 Jan 21 3
Sangeang Api Indonesia 1985 Jul 30 1988 Feb 16 ± 15 days 3
El Misti Peru 1985 Jul 2 ± 182 days Unknown 1
Colima Mexico 1985 Jul 2 ± 182 days 1986 Jan 5 ± 4 days 1
Tokachidake Japan 1985 Jun 19 1985 Jun 22 1
Piton de la Fournaise France 1985 Jun 14 1988 Dec 29 1
Bezymianny Russia 1985 Jun 12 1985 Dec 14 3
Sheveluch Russia 1985 May 26 1985 Oct 25 2
Ruapehu New Zealand 1985 May 21 (in or before) 1985 Jun 9 (?) 1
Soputan Indonesia 1985 May 19 1985 May 20 2
Guagua Pichincha Ecuador 1985 May 16 ± 15 days 1985 Jun 16 ± 15 days 1
Niuafo'ou Tonga 1985 Mar 21 1985 Mar 22 0
Kanlaon Philippines 1985 Mar 13 1985 Mar 14 1
Etna Italy 1985 Mar 8 1985 Jul 13 1
Paluweh Indonesia 1985 Feb 3 1985 Feb 3 1
Heard Australia 1985 Jan 14 1987 Jan 16 (?) ± 15 days 2
Teahitia France 1985 Jan 10 1985 Jan 25 0
Jan Mayen Norway 1985 Jan 6 1985 Jan 9 0
Ulawun Papua New Guinea 1984 Dec 30 1985 Jan 27 1
Nevado del Ruiz Colombia 1984 Dec 22 1985 Mar 19 (?) 1
Lascar Chile 1984 Dec 16 ± 15 days 1985 Jul 16 ± 15 days 0
Concepcion Nicaragua 1984 Dec 16 ± 15 days 1985 Jan 2 2
Villarrica Chile 1984 Aug 11 1985 Nov 18 2
Gorely Russia 1984 Aug 4 1986 Sep 21 (?) 2
Etna Italy 1984 Jul 20 1986 Sep 24 3
Ambrym Vanuatu 1984 Jul 2 ± 182 days 1986 Mar 8 (in or after) 2
Tinakula Solomon Islands 1984 Jun 3 (in or before) 1985 Jun 13 (in or after) 2
Asosan Japan 1984 Apr 13 ± 3 days 1985 Jun 24 1
Klyuchevskoy Russia 1984 Mar 10 1985 Jan 28 3
Karangetang Indonesia 1983 May 16 ± 15 days 1988 Dec 31 (in or after) 3
Kilauea United States 1983 Jan 3 2018 Sep 5 3
Ol Doinyo Lengai Tanzania 1983 Jan 1 1993 Sep 24 2
Pagan United States 1981 May 15 1985 May 1 (in or after) 4
St. Helens United States 1980 Mar 27 1986 Oct 28 ± 3 days 5
Etna Italy 1979 Jul 3 1992 Dec 16 ± 15 days 2
Manam Papua New Guinea 1974 Mar 4 (?) 1999 Nov 9 (?) 3
Nevados de Chillan Chile 1973 Jul 16 ± 15 days 1986 Jul 2 ± 182 days 2
Langila Papua New Guinea 1973 Feb 24 ± 4 days 2000 Oct 16 (in or after) ± 15 days 3
Erebus Antarctica 1972 Dec 16 (in or before) ± 15 days 2022 Mar 17 (continuing) 2
Merapi Indonesia 1972 Oct 6 1985 Mar 16 ± 15 days 2
Bagana Papua New Guinea 1972 Jul 2 ± 182 days 1995 Jul 2 (in or after) ± 182 days 2
Arenal Costa Rica 1968 Jul 29 2010 Dec 16 (?) ± 15 days 3
Semeru Indonesia 1967 Aug 31 2009 Mar 15 3
Erta Ale Ethiopia 1967 Jul 2 (in or before) ± 182 days 2022 Mar 17 (continuing) 0
Masaya Nicaragua 1965 Oct 10 (?) 1985 Apr 16 (?) ± 15 days 1
Pacaya Guatemala 1965 Jul 4 1989 Mar 10 3
Aira Japan 1955 Oct 13 2016 Aug 22 3
Sangay Ecuador 1934 Aug 8 2011 Mar 2 3
Stromboli Italy 1934 Feb 2 2022 Mar 17 (continuing) 2
Dukono Indonesia 1933 Aug 13 2022 Mar 17 (continuing) 3
Santa Maria Guatemala 1922 Jun 22 2022 Mar 17 (continuing) 3
Yasur Vanuatu 1774 Jul 2 (in or before) ± 182 days 2022 Mar 17 (continuing) 3

List of Questions

Global Volcanism Program, 2013. Volcanoes of the World, v. 4.10.6 (24 Mar 2022). Venzke, E (ed.). Smithsonian Institution. Downloaded 25 May 2022. https://doi.org/10.5479/si.GVP.VOTW4-2013.