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 |
|---|---|---|---|
| 3 October 2015 | continuing | 1 | Santiago crater · Observations: Reported |
| 30 April 2012 | 8 June 2012 | 1 | Santiago Crater · Observations: Reported |
| 29 April 2008 | 17 December 2008 | 1 | Santiago · Observations: Reported |
| 4 August 2006 | 25 October 2006 | 1 | Santiago · Observations: Reported |
| 4 March 2005 | 30 March 2005 | 1 | Santiago · Observations: Reported |
| 22 September 2003 | 12 December 2003 | 1 | Santiago · Observations: Reported |
| 23 April 2001 | 25 April 2001 | 1 | Santiago · Observations: Reported |
| 22 November 1999 | 2 March 2000 | 1 | Santiago · Observations: Reported |
| 14 September 1998 | 14 September 1998 | 1 | Santiago · Observations: Reported |
| 3 June 1997 | 17 November 1997 | 1 | Santiago · Observations: Reported |
| 5 December 1996 | 5 December 1996 | 1 | Santiago · Observations: Reported |
| 16 June 1993 | 16 November 1994 | 1 | Santiago · Observations: Reported |
| 20 February 1989 | 16 November 1989 | 1 | Santiago · Observations: Reported |
| 15 February 1987 | 22 February 1987 | 1 | Santiago · Observations: Reported |
| 10 October 1965 | 16 April 1985 | 1 | Santiago · Observations: Reported |
| 16 September 1948 | 16 September 1948 | 1 | Santiago · Observations: Reported |
| 16 June 1946 | 16 December 1947 | 1 | Santiago · Observations: Reported |
| 16 April 1925 | — | 2 | Santiago · Observations: Reported |
| 2 July 1919 | 2 July 1924 | 2 | Santiago · Observations: Reported |
| 16 January 1918 | — | 1 | Santiago · Observations: Reported |
| 12 July 1913 | — | 1 | Santiago · Observations: Reported |
| 2 January 1906 | 9 January 1906 | 2 | Santiago and upper NE flank near El Pelón · Observations: Reported |
| 16 May 1904 | 16 June 1904 | 2 | Santiago · Observations: Reported |
| 15 July 1902 | 16 November 1903 | 2 | Santiago · Observations: Reported |
| 10 November 1858 | 27 March 1859 | 2 | Santiago, San Pedro · Observations: Reported |
| 16 December 1856 | 16 January 1857 | 2 | Santiago or San Pedro · Observations: Reported |
| 9 April 1853 | 15 September 1853 | 1 | Santiago · Observations: Reported |
| 16 June 1852 | 16 July 1852 | 2 | Between Masaya and Nindirí Craters · Observations: Reported |
| 16 March 1772 | 25 March 1772 | 2 | North side of Old Masaya Crater · Observations: Reported |
| 1670 | — | 3 | Nindirí · Observations: Reported |
| 1570 | 1586 | 0 | Nindirí · Observations: Reported |
| 1551 | — | 0 | Nindirí · Observations: Reported |
| 1524 | 1544 | 0 | Nindirí · Observations: Reported |
| c. 150 | — | 5 | Correlation: Tephrochronology |
| 170 BCE ± 100 years | — | 5 | Isotopic: 14C (uncalibrated) |
| c. 4,050 BCE | — | 6 | NW of caldera · Correlation: Tephrochronology |
Data: Global Volcanism Program, Smithsonian Institution (#344100)