Izalco

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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 13.813°N
  • 89.633°W

  • 1950 m
    6396 ft

  • 343030
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

There are no activity reports for Izalco.



 Available Weekly Reports

There are no Weekly Reports available for Izalco.

Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1966 Oct 28 1966 Nov Confirmed 0 Historical Observations SSE flank (550 m below summit)
1948 Nov 4 1957 Dec 1 ± 30 days Confirmed 3 Historical Observations Summit, SW and NE flanks
1939 Feb 1948 Feb Confirmed 2 Historical Observations Summit and SSE flank
1937 (?) 1938 (?) Confirmed 2 Historical Observations
1933 Nov 30 1934 Jan 12 (in or after) Confirmed 2 Historical Observations
1931 Mar 31 ± 90 days Unknown Confirmed 2 Historical Observations
1930 Apr Unknown Confirmed 0 Historical Observations Outer slope of eastern summit crater
1927 1928 (?) Confirmed 2 Historical Observations
1925 Dec 26 1927 Jan Confirmed 3 Historical Observations
1924 Mar Unknown Confirmed 2 Historical Observations
1920 Oct 29 1921 Apr 10 Confirmed 2 Historical Observations SE flank
1912 Jan 16 1916 Jan 26 Confirmed 2 Historical Observations Summit and NE flank
1903 Nov 1905 Mar Confirmed 2 Historical Observations Summit and east flank
1902 May 10 1902 Dec 30 Confirmed 2 Historical Observations Summit and NE flank
1899 Dec 31 1900 Mar Confirmed 2 Historical Observations
1891 1898 Jul Confirmed 2 Historical Observations
1890 Mar 26 ± 5 days 1890 Apr 20 Confirmed 0 Historical Observations Summit and upper east flank
1887 1889 Confirmed 2 Historical Observations
1885 Unknown Confirmed 2 Historical Observations
1884 Mar 9 1884 Mar 10 Confirmed 2 Historical Observations
1883 Sep 5 ± 4 days 1883 Nov 13 Confirmed 2 Historical Observations
1882 Jul 12 Unknown Confirmed 2 Historical Observations
1881 Jan 1 Unknown Confirmed 0 Historical Observations
1879 Dec 25 1880 Mar Confirmed 2 Historical Observations
1878 Unknown Confirmed   Historical Observations
[ 1874 ] [ 1875 ] Uncertain    
1872 Dec 1873 Mar 19 (in or after) Confirmed 2 Historical Observations
[ 1870 May 19 ] [ Unknown ] Uncertain 2  
1869 Mar 1 (?) 1869 Jun 18 (in or after) Confirmed 2 Historical Observations Summit and east flank
1868 Feb 16 1868 Feb 17 Confirmed 2 Historical Observations
1867 Apr 1867 Aug Confirmed 2 Historical Observations
1866 Apr 27 1866 Aug 15 ± 5 days Confirmed 2 Historical Observations
1864 May 15 ± 2 days 1865 Jun 15 ± 5 days Confirmed 2 Historical Observations Summit and NE flank
1863 Unknown Confirmed 0 Historical Observations
1859 Dec 8 1860 Jan 22 Confirmed 0 Historical Observations
1858 Feb 6 1859 Jul Confirmed 2 Historical Observations
1857 Feb 15 1857 Feb 19 (in or after) Confirmed 2 Historical Observations
1856 May 24 1856 Sep 1 ± 1 days Confirmed 2 Historical Observations Summit and south flank
1854 May 13 1854 Jun 8 Confirmed 2 Historical Observations
1850 Unknown Confirmed 2 Historical Observations
1844 Jun 1844 Oct Confirmed 2 Historical Observations
1842 Unknown Confirmed 2 Historical Observations
1838 1840 Confirmed 2 Historical Observations
1836 Unknown Confirmed 2 Historical Observations
1825 Unknown Confirmed 2 Historical Observations
1817 Unknown Confirmed 2 Historical Observations
1805 1807 Confirmed 2 Historical Observations
1802 1803 Confirmed 2 Historical Observations
1798 Apr Unknown Confirmed 2 Historical Observations
1793 Mar 29 1793 Sep Confirmed 2 Historical Observations
1783 Jul (?) Unknown Confirmed 0 Historical Observations
1772 (?) Unknown Confirmed 2 Historical Observations
1770 Feb 23 Unknown Confirmed 2 Historical Observations
[ 1636 ] [ Unknown ] Discredited    

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Carr M J, Pontier N K, 1981. Evolution of a young parasitic cone towards a mature central vent; Izalco and Santa Ana volcanoes in El Salvador, Central America. J Volc Geotherm Res, 11: 277-292.

Halsor S P, Rose W I, 1988. Common characteristics of paired volcanoes in northern Central America. J Geophys Res, 93: 4467-4476.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Mooser F, Meyer-Abich H, McBirney A R, 1958. Central America. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 6: 1-146.

Pullinger C, 1998. Evolution of the Santa Ana volcanic complex, El Salvador. Unpublished MSci thesis, Michigan Tech Univ, 151 p.

Sapper K, 1925. The Volcanoes of Central America. Halle: Verlag Max Niemeyer, 144 p.

Woodruff L G, Rose W I Jr, Rigot W, 1979. Contrasting fractionation patterns for sequential magmas from two calc-alkaline volcanoes in Central America. J Volc Geotherm Res, 6: 217-240.

Volcán de Izalco, El Salvador's youngest volcano, was born in in 1770 CE on the southern flank of Santa Ana volcano. Frequent strombolian eruptions from Izalco provided a night-time beacon for ships, causing the volcano to be known as El Faro, the "Lighthouse of the Pacific." During the two centuries prior to the cessation of activity in 1966, Izalco built a steep-sided, 650-m-high stratovolcano truncated by a 250-m-wide summit crater. Izalco has been one of the most frequently active volcanoes in North America, and its sparsely vegetated slopes contrast dramatically with neighboring forested volcanoes. Izalco's dominantly basaltic-andesite pyroclasts and lava flows are geochemically distinct from those of both Santa Ana and its fissure-controlled flank vents. Lava flows were mostly erupted from flank vents and deflected southward by the slopes of Santa Ana, traveling as far as about 7 km from the summit of Izalco.