What was erupting in the year...?
There were 70 confirmed eruptions at some point during 2001 from 65 different volcanoes; 33 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 (19 September 2025). Information about more recent eruptions can be found in the Smithsonian / USGS Weekly Volcanic Activity Report.
| Volcano | Country | Eruption Start Date | Eruption Stop Date | Eruption Type | Max VEI |
|---|---|---|---|---|---|
| Etna | Italy | 2001 Dec 16 (?) ± 15 days | 2003 Nov 9 | Explosive / Effusive | 1 |
| Bezymianny | Russia | 2001 Dec 10 | 2002 Jan 6 (?) | Explosive / Effusive | 2 |
| Kick 'em Jenny | Grenada | 2001 Dec 4 | 2001 Dec 6 | Explosive / Effusive | 0 |
| Guagua Pichincha | Ecuador | 2001 Nov 26 | 2001 Nov 26 | Explosive / Effusive | 1 |
| Walvis Ridge at 33°S | Undersea Features | 2001 Nov 24 | 2002 Mar 16 ± 15 days | Explosive / Effusive | 0 |
| Karymsky | Russia | 2001 Nov 15 | 2016 Apr 1 | Explosive / Effusive | 3 |
| Pacaya | Guatemala | 2001 Oct 31 | 2001 Oct 31 | Explosive / Effusive | 1 |
| Avachinsky | Russia | 2001 Oct 5 | 2001 Oct 5 | Explosive / Effusive | 1 |
| Montagu Island | United Kingdom | 2001 Oct 1 ± 20 days | 2007 Sep 20 | Explosive / Effusive | 1 |
| Unnamed | Tonga | 2001 Sep 27 | 2001 Sep 28 (?) | Explosive / Effusive | 2 |
| Talang | Indonesia | 2001 Sep 25 | 2001 Nov 15 ± 3 days | Explosive / Effusive | 1 |
| Ioto | Japan | 2001 Sep 21 | 2001 Oct 23 | Explosive / Effusive | 1 |
| Ulawun | Papua New Guinea | 2001 Aug 28 | 2001 Aug 28 | Explosive / Effusive | 2 |
| Bezymianny | Russia | 2001 Jul 23 (?) | 2001 Aug 10 (?) | Explosive / Effusive | 3 |
| Krakatau | Indonesia | 2001 Jul 21 | 2001 Sep 17 (?) | Explosive / Effusive | 1 |
| Manam | Papua New Guinea | 2001 Jun 14 | 2001 Jun 25 (?) | Explosive / Effusive | 2 |
| Lopevi | Vanuatu | 2001 Jun 8 | 2001 Jun 19 (on or after) | Explosive / Effusive | 3 |
| Ibu | Indonesia | 2001 May 28 (?) | 2001 Oct 3 (?) | Explosive / Effusive | 0 |
| Kerinci | Indonesia | 2001 May 12 | 2002 Aug 27 (?) | Explosive / Effusive | 2 |
| San Cristobal | Nicaragua | 2001 May 11 (?) | 2001 Dec 9 (?) | Explosive / Effusive | 1 |
| McDonald Islands | Australia | 2001 May 3 ± 150 days | Unknown | 1 | |
| Ahyi | United States | 2001 Apr 24 | 2001 Apr 25 | Submarine | 0 |
| Masaya | Nicaragua | 2001 Apr 23 | 2001 Apr 25 (?) | Explosive / Effusive | 1 |
| Marapi | Indonesia | 2001 Apr 13 | 2001 Jun 5 | Explosive / Effusive | 2 |
| Piton de la Fournaise | France | 2001 Mar 27 | 2001 Jul 7 | Explosive / Effusive | 0 |
| Whakaari/White Island | New Zealand | 2001 Feb 19 | 2001 Feb 19 (?) | Explosive / Effusive | 2 |
| Nyamulagira | DR Congo | 2001 Feb 6 | 2001 Apr 5 ± 4 days | Explosive / Effusive | 2 |
| Cleveland | United States | 2001 Feb 2 (on or before) | 2001 Apr 15 (?) | Explosive / Effusive | 3 |
| Telica | Nicaragua | 2001 Jan 17 | 2001 Dec 19 (?) | Explosive / Effusive | 1 |
| Ulawun | Papua New Guinea | 2001 Jan 16 (?) | 2001 May 3 | Explosive / Effusive | 3 |
| Miyakejima | Japan | 2001 Jan 11 | 2002 Nov 24 | Explosive / Effusive | 2 |
| Inielika | Indonesia | 2001 Jan 11 | 2001 Mar 16 (?) ± 15 days | Explosive / Effusive | 2 |
| Mayon | Philippines | 2001 Jan 8 | 2001 Aug 8 | Explosive / Effusive | 3 |
| Suwanosejima | Japan | 2000 Dec 19 | 2004 Jul 5 (?) | Explosive / Effusive | 3 |
| Tengger Caldera | Indonesia | 2000 Nov 29 | 2001 Jan 15 (on or after) | Explosive / Effusive | 2 |
| Kikai | Japan | 2000 Oct 16 ± 15 days | 2001 Dec 16 ± 15 days | Explosive / Effusive | 1 |
| Pacaya | Guatemala | 2000 Aug 16 ± 15 days | 2001 Jul 5 (?) | Explosive / Effusive | 1 |
| Lascar | Chile | 2000 Jul 20 | 2001 Jan 18 (?) | Explosive / Effusive | 2 |
| Saunders | United Kingdom | 2000 May 13 | 2013 Nov 16 | Explosive / Effusive | 0 |
| Soputan | Indonesia | 2000 May 13 | 2003 Sep 4 (?) | Explosive / Effusive | 2 |
| Lokon-Empung | Indonesia | 2000 May 10 ± 3 days | 2001 Aug 18 | Explosive / Effusive | 2 |
| Toya | Japan | 2000 Mar 31 | 2001 Sep 15 ± 5 days | Explosive / Effusive | 2 |
| Heard | Australia | 2000 Mar 7 (?) | 2001 Feb 16 ± 15 days | Explosive / Effusive | 2 |
| Tinakula | Solomon Islands | 2000 Feb 29 (?) | 2001 May 8 (?) | Explosive / Effusive | 1 |
| Bagana | Papua New Guinea | 2000 Feb 28 (in or before) | 2025 Sep 19 (continuing) | Explosive / Effusive | 2 |
| Kavachi | Solomon Islands | 1999 Nov 16 (?) ± 15 days | 2003 Aug 16 ± 15 days | Explosive / Effusive | 1 |
| Tungurahua | Ecuador | 1999 Oct 5 | 2009 Jul 8 ± 7 days | Explosive / Effusive | 3 |
| Sheveluch | Russia | 1999 Aug 15 | 2025 Sep 19 (continuing) | Explosive / Effusive | 4 |
| Karangetang | Indonesia | 1999 Mar 16 (on or before) ± 15 days | 2003 Oct 28 | Explosive / Effusive | 3 |
| Guagua Pichincha | Ecuador | 1998 Aug 7 | 2001 May 25 | Explosive / Effusive | 3 |
| Villarrica | Chile | 1998 Feb 24 ± 4 days | 2002 Jun 16 (?) ± 15 days | Explosive / Effusive | 1 |
| Colima | Mexico | 1997 Nov 22 | 2011 Jun 21 | Explosive / Effusive | 3 |
| Ambrym | Vanuatu | 1996 Jun 16 (on or before) ± 15 days | 2005 Aug 16 (on or after) ± 15 days | Explosive / Effusive | 1 |
| Popocatepetl | Mexico | 1996 Mar 5 | 2003 Nov 22 (?) | Explosive / Effusive | 3 |
| Rabaul | Papua New Guinea | 1995 Nov 28 | 2001 Sep 5 ± 4 days | Explosive / Effusive | 2 |
| Soufriere Hills | United Kingdom | 1995 Jul 18 | 2003 Oct 8 | Explosive / Effusive | 3 |
| Ol Doinyo Lengai | Tanzania | 1994 Sep 18 | 2006 Jul 16 (?) ± 15 days | Explosive / Effusive | 1 |
| Etna | Italy | 1994 Jun 17 | 2001 Aug 9 | Explosive / Effusive | 3 |
| Merapi | Indonesia | 1992 Jan 20 | 2002 Oct 19 (?) | Explosive / Effusive | 2 |
| Kilauea | United States | 1983 Jan 3 | 2018 Sep 5 | Explosive / Effusive | 3 |
| Erebus | Antarctica | 1972 Dec 16 (on or before) ± 15 days | 2025 Sep 19 (continuing) | Lava Lake | 2 |
| Arenal | Costa Rica | 1968 Jul 29 | 2010 Dec 16 (?) ± 15 days | Explosive / Effusive | 3 |
| Semeru | Indonesia | 1967 Aug 31 | 2009 Mar 15 | Explosive / Effusive | 3 |
| Erta Ale | Ethiopia | 1967 Jul 2 (in or before) ± 182 days | 2025 Sep 19 (continuing) | Explosive / Effusive | 0 |
| Aira | Japan | 1955 Oct 13 | 2016 Aug 22 | Explosive / Effusive | 3 |
| Sangay | Ecuador | 1934 Aug 8 | 2011 Mar 2 | Explosive / Effusive | 3 |
| Stromboli | Italy | 1934 Feb 2 | 2025 Sep 19 (continuing) | Explosive / Effusive | 2 |
| Dukono | Indonesia | 1933 Aug 13 | 2025 Sep 19 (continuing) | Explosive / Effusive | 3 |
| Santa Maria | Guatemala | 1922 Jun 22 | 2025 Sep 19 (continuing) | Explosive / Effusive | 3 |
| Yasur | Vanuatu | 1270 ± 110 years | 2025 Sep 19 (continuing) | Explosive / Effusive | 3 |
List of Questions
Global Volcanism Program, 2025. [Database] Volcanoes of the World (v. 5.3.3; 26 Nov 2025). Distributed by Smithsonian Institution, compiled by Venzke, E. https://doi.org/10.5479/si.GVP.VOTW5-2025.5.3
