Gamalama – stratovolcano, Indonesia

Eruption history

VEI – Volcanic Explosivity Index: 0 = lava outpouring, 4 = like Eyjafjallajökull 2010, 6 = like Pinatubo 1991, 7 = like Tambora 1815. The scale is logarithmic – each step is about 10 times more material.

Start	End	VEI	Vent and dating
4 October 2018	6 October 2018	1	Summit crater · Observations: Reported
3 August 2016	4 August 2016	1	Summit crater · Observations: Reported
16 July 2015	8 September 2015	2	Summit crater · Observations: Reported
18 December 2014	25 December 2014	2	Summit crater · Observations: Reported
15 September 2012	17 September 2012	1	Summit crater · Observations: Reported
5 December 2011	23 December 2011	2	Summit crater · Observations: Reported
31 July 2003	2 October 2003	2	Observations: Reported
2 July 1996	—	2	Observations: Reported
16 January 1994	15 October 1994	2	Observations: Reported
6 May 1993	21 May 1993	2	Observations: Reported
25 April 1990	26 April 1990	3	Observations: Reported
12 February 1988	16 March 1988	2	Observations: Reported
9 August 1983	12 August 1983	3	Observations: Reported
4 September 1980	23 September 1980	2	Observations: Reported
31 December 1962	2 January 1963	2	East flank · Observations: Reported
8 September 1938	8 September 1938	2	Observations: Reported
12 November 1933	—	2	Observations: Reported
10 November 1932	13 November 1932	2	Observations: Reported
13 April 1923	6 May 1923	2	Observations: Reported
16 August 1918	4 September 1918	1	Observations: Reported
2 September 1911	6 September 1911	1	Observations: Reported
17 November 1907	20 November 1907	2	Observations: Reported
14 May 1898	28 May 1898	2	Observations: Reported
7 September 1897	24 September 1897	1	Observations: Reported
19 December 1895	19 December 1895	1	Observations: Reported
16 May 1884	16 May 1884	2	Observations: Reported
7 August 1871	25 September 1871	2	Observations: Reported
13 November 1868	10 February 1869	2	Observations: Reported
13 March 1868	13 March 1868	1	Observations: Reported
27 December 1864	2 January 1865	2	Observations: Reported
20 January 1864	17 February 1864	2	Observations: Reported
15 July 1862	16 October 1862	2	Observations: Reported
27 November 1849	19 November 1850	2	Observations: Reported
7 September 1847	7 September 1847	?	Observations: Reported
7 February 1847	7 February 1847	2	Observations: Reported
19 May 1846	19 May 1846	2	Observations: Reported
10 April 1843	27 May 1843	2	Observations: Reported
6 October 1842	31 December 1842	1	Observations: Reported
2 February 1840	29 September 1840	3	Observations: Reported
29 January 1839	26 March 1839	2	Observations: Reported
26 February 1838	16 May 1838	2	Observations: Reported
4 January 1835	—	2	Observations: Reported
15 June 1833	—	2	Observations: Reported
27 May 1831	27 June 1831	2	Observations: Reported
27 November 1814	28 November 1814	2	Observations: Reported
7 September 1812	7 September 1812	2	Observations: Reported
1 February 1811	16 May 1811	2	Observations: Reported
20 August 1775	6 November 1775	3	Summit and NW flank (100 m) · Observations: Reported
21 October 1773	22 January 1774	2	Observations: Reported
2 February 1773	7 February 1773	2	Observations: Reported
28 August 1771	9 October 1772	3	Observations: Reported
6 July 1770	9 December 1770	3	Observations: Reported
1763	—	2	North flank · Observations: Reported
1739	—	2	Observations: Reported
10 March 1737	13 March 1737	2	Observations: Reported
10 May 1687	11 May 1687	3	Observations: Reported
September 1686	13 October 1686	2	Observations: Reported
31 December 1676	—	2	Observations: Reported
June 1659	—	2	Observations: Reported
31 December 1653	—	3	Observations: Reported
15 June 1648	18 June 1648	2	Observations: Reported
29 March 1635	—	2	Observations: Reported
18 July 1608	19 July 1608	3	Observations: Reported
May 1605	—	2	Observations: Reported
31 December 1561	—	2	Observations: Reported
1538	—	3	Observations: Reported
1510 ± 10 years	—	3	Observations: Reported

Data: Global Volcanism Program, Smithsonian Institution (#268060)