What was erupting in the year...?
There were 69 confirmed eruptions at some point during 1973 from 65 different volcanoes; 41 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 (16 August 2024). 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 |
|---|---|---|---|---|
| Concepcion | Nicaragua | 1973 Dec 24 | 1974 Jan 12 | 2 |
| Fukutoku-Oka-no-Ba | Japan | 1973 Dec 18 | 1974 Feb 16 | 2 |
| Fernandina | Ecuador | 1973 Dec 9 | 1973 Dec 16 ± 1 days | 2 |
| Iliwerung | Indonesia | 1973 Dec 5 | 1974 Aug 22 | 2 |
| Reventador | Ecuador | 1973 Nov 16 ± 15 days | 1974 Jul 16 ± 15 days | 3 |
| Pavlof | United States | 1973 Nov 12 | 1973 Nov 13 | 2 |
| Kuchinoerabujima | Japan | 1973 Nov 5 | 1973 Nov 19 | 2 |
| Ruapehu | New Zealand | 1973 Oct 31 | 1974 Oct 25 | 1 |
| Paluweh | Indonesia | 1973 Oct 27 | 1973 Oct 28 | 2 |
| Rumble III | New Zealand | 1973 Oct 15 | 1973 Oct 17 | 0 |
| Gaua | Vanuatu | 1973 Oct 9 | 1974 Jan 21 | 2 |
| Ulawun | Papua New Guinea | 1973 Oct 4 | 1973 Oct 19 | 2 |
| Fukujin | United States | 1973 Sep 27 | 1974 Mar 5 | 1 |
| Lokon-Empung | Indonesia | 1973 Sep 15 | 1974 Dec 16 ± 15 days | 1 |
| Atka Volcanic Complex | United States | 1973 Aug 25 ± 2 days | Unknown | 0 |
| Slamet | Indonesia | 1973 Aug 16 ± 15 days | Unknown | 1 |
| Chikurachki | Russia | 1973 Aug 10 | 1973 Sep 28 | 2 |
| Kolokol Group | Russia | 1973 Jul 25 | 1973 Jul 26 (?) | 1 |
| Marapi | Indonesia | 1973 Jul 24 | 1973 Jul 24 | 2 |
| Nevados de Chillan | Chile | 1973 Jul 16 ± 15 days | 1986 Jul 2 ± 182 days | 2 |
| Chachadake [Tiatia] | Japan - administered by Russia | 1973 Jul 14 | 1973 Jul 28 | 4 |
| Curacoa | Tonga | 1973 Jul 11 | 1973 Jul 16 | 3 |
| Vailulu'u | United States | 1973 Jul 10 | 1973 Jul 10 | 0 |
| Etorofu-Yakeyama [Grozny Group] | Japan - administered by Russia | 1973 May 16 | 1973 May 17 | 2 |
| Raung | Indonesia | 1973 May 16 ± 15 days | 1973 Oct 16 ± 15 days | 1 |
| Piton de la Fournaise | France | 1973 May 10 | 1973 Sep 5 (?) | 2 |
| Long Island | Papua New Guinea | 1973 Apr 16 ± 15 days | 1974 Feb 28 | 2 |
| Iliboleng | Indonesia | 1973 Apr 16 ± 15 days | 1974 Apr 16 ± 15 days | 2 |
| Ambrym | Vanuatu | 1973 Apr 15 ± 5 days | 1976 Oct 14 | 3 |
| Nishinoshima | Japan | 1973 Apr 12 | 1974 May 5 ± 4 days | 2 |
| Akutan | United States | 1973 Mar 16 (?) ± 15 days | 1973 May 16 ± 15 days | 2 |
| Langila | Papua New Guinea | 1973 Feb 24 ± 4 days | 2000 Oct 16 (in or after) ± 15 days | 3 |
| Fuego | Guatemala | 1973 Feb 23 | 1973 Mar 23 | 2 |
| Okataina | New Zealand | 1973 Feb 22 | 1973 Feb 22 | 1 |
| Asamayama | Japan | 1973 Feb 1 | 1973 May 24 | 2 |
| Dempo | Indonesia | 1973 Jan 24 | 1973 Jan 25 | 2 |
| Vestmannaeyjar | Iceland | 1973 Jan 23 | 1973 Jun 28 | 3 |
| Etorofu-Yakeyama [Grozny Group] | Japan - administered by Russia | 1973 Jan 16 ± 15 days | 1973 Jan 16 ± 15 days | 1 |
| Asosan | Japan | 1973 Jan 16 ± 15 days | 1975 Jun 16 ± 15 days | 2 |
| Jan Mayen | Norway | 1973 Jan 15 ± 45 days | Unknown | 1 |
| Soputan | Indonesia | 1973 Jan 6 | 1973 May 27 | 2 |
| Erebus | Antarctica | 1972 Dec 16 (in or before) ± 15 days | 2024 Aug 16 (continuing) | 2 |
| Tongariro | New Zealand | 1972 Nov 22 | 1974 Aug 19 | 3 |
| Paluweh | Indonesia | 1972 Oct 22 | 1973 Jan 16 | 3 |
| Ruapehu | New Zealand | 1972 Oct 22 | 1973 Jan 10 | 1 |
| 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 |
| Krakatau | Indonesia | 1972 Jun 10 ± 3 days | 1973 Jul 1 ± 30 days | 2 |
| Piton de la Fournaise | France | 1972 Jun 9 (?) | 1973 Jan 16 (?) | 2 |
| Poas | Costa Rica | 1972 Feb 9 | 1973 Sep 8 | 2 |
| Karangetang | Indonesia | 1972 Jan 16 ± 15 days | 1976 Apr 5 | 3 |
| Klyuchevskoy | Russia | 1971 Nov 16 ± 15 days | 1973 Dec 16 ± 15 days | 1 |
| Etna | Italy | 1971 Sep 19 | 1979 Mar 16 (?) ± 15 days | 2 |
| Bezymianny | Russia | 1971 Mar 16 ± 15 days | 1974 Dec 16 (in or after) ± 15 days | 3 |
| Karymsky | Russia | 1970 May 11 | 1982 Oct 11 | 3 |
| Kilauea | United States | 1969 Feb 22 | 1974 Sep 19 | 0 |
| 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 | 2024 Aug 16 (continuing) | 0 |
| Masaya | Nicaragua | 1965 Oct 10 (?) | 1985 Apr 16 (?) ± 15 days | 1 |
| Pacaya | Guatemala | 1965 Jul 4 | 1989 Mar 10 | 3 |
| Suwanosejima | Japan | 1956 Nov 16 ± 15 days | 1984 May 16 ± 15 days | 2 |
| Aira | Japan | 1955 Oct 13 | 2016 Aug 22 | 3 |
| Sangay | Ecuador | 1934 Aug 8 | 2011 Mar 2 | 3 |
| Stromboli | Italy | 1934 Feb 2 | 2024 Aug 16 (continuing) | 2 |
| Dukono | Indonesia | 1933 Aug 13 | 2024 Aug 16 (continuing) | 3 |
| Nyiragongo | DR Congo | 1927 Mar 16 ± 15 days | 1977 Jan 10 | 1 |
| Santa Maria | Guatemala | 1922 Jun 22 | 2024 Aug 16 (continuing) | 3 |
| Yasur | Vanuatu | 1270 ± 110 years | 2024 Aug 16 (continuing) | 3 |
List of Questions
Global Volcanism Program, 2024. [Database] Volcanoes of the World (v. 5.2.3; 20 Sep 2024). Distributed by Smithsonian Institution, compiled by Venzke, E. https://doi.org/10.5479/si.GVP.VOTW5-2024.5.2
