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What was erupting in the year...?

Statistics for volcanoes and eruptions since 1991; data for 2021 is through the last data update (19 August 2021). Click on each year for the full list of volcanoes and additional details for that year (opens a new tab). Total eruptions counts activity that took place during any (or all) of that year. Eruptions that started as new activity are included in the total eruptions count. Data subject to change or correction due to ongoing research. Columns showing the Volcanic Explosivity Index (VEI) values reflect the maximum VEI for the overall eruption and are assigned to the year in which the eruption started.

Year Eruptions
Started (New)
Eruptions
Ended
Eruptions
Total
Volcanoes
Active
Countries VEI <= 2 VEI 3 VEI 4 VEI 5 VEI 6
2021 21 18 68 68 29 21 0 0 0 0

2020 27 26 73 68 29 20 5 2 0 0
2019 26 28 74 72 28 22 2 2 0 0
2018 37 32 80 75 28 31 6 0 0 0
2017 32 31 74 71 29 26 6 0 0 0
2016 34 43 85 74 28 29 5 0 0 0
2015 40 37 88 83 31 34 4 2 0 0
2014 40 31 79 72 30 30 9 1 0 0
2013 35 38 77 72 29 30 4 1 0 0
2012 38 38 80 74 27 33 4 1 0 0
2011 35 34 76 70 27 29 3 2 1 0
2010 33 36 77 69 24 24 7 2 0 0
2009 31 31 75 68 25 28 2 1 0 0
2008 46 40 87 80 28 37 6 3 0 0
2007 36 38 81 76 29 30 6 0 0 0
2006 44 41 86 76 29 39 4 1 0 0
2005 46 38 83 75 28 39 7 0 0 0
2004 49 42 81 71 27 41 7 1 0 0
2003 30 33 66 63 25 25 5 0 0 0
2002 42 35 75 66 25 36 4 2 0 0
2001 35 38 72 65 26 29 6 0 0 0
2000 39 38 75 67 29 34 4 1 0 0
1999 39 31 70 67 26 34 4 1 0 0
1998 32 23 59 56 24 27 5 0 0 0
1997 26 25 56 52 23 22 4 0 0 0
1996 35 26 61 59 25 29 6 0 0 0
1995 33 36 65 62 29 29 4 0 0 0
1994 33 28 62 58 22 28 4 1 0 0
1993 28 29 61 58 24 26 1 1 0 0
1992 27 26 63 57 24 24 2 1 0 0
1991 38 29 69 65 27 32 4 0 1 1

List of Questions

Global Volcanism Program, 2013. Volcanoes of the World, v. 4.10.2 (24 Aug 2021). Venzke, E (ed.). Smithsonian Institution. Downloaded 21 Sep 2021. https://doi.org/10.5479/si.GVP.VOTW4-2013.