Available Weekly Reports
15 May-21 May 2013
CVGHM reported that during 1-19 May diffuse white plumes rose 10 m above Sangeang Api's crater. Both the lava dome and surrounding areas showed no changes since November 2012. Seismicity had increased on 26 April and remained high. The Alert Level was raised to 3 (on a scale of 1-4) on 19 May. Residents and tourists were advised not to approach the craters within a radius of 5 km.
Sources: Center of Volcanology and Geological Hazard Mitigation (CVGHM)
15 May 2013Back to Top
26 December 2012Back to Top
10 October 2012Back to Top
3 June 2009Back to Top
Summary of eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|[ 2009 May 1 ]||[ 2009 Jun 3 ]||Uncertain|
|1985 Jul 30||1988 Feb||Confirmed||3||Historical||Doro Api|
|1966 Feb 28||1966 Nov||Confirmed||2||Historical|
|1964 Jan 29||1965 Dec 1 ± 30 days||Confirmed||2||Historical||Doro Api|
|1954 Nov 4||Unknown||Confirmed||2||Historical|
|1954 Apr 26||Unknown||Confirmed||2||Historical|
|1953 Mar 19||1953 May 15 (in or after)||Confirmed||3||Historical||Doro Api|
|1911 Feb 13||1911 Mar 2||Confirmed||2||Historical||Doro Api|
|1860 Sep 11||1860 Oct||Confirmed||2||Historical|
|1821 Mar 23||Unknown||Confirmed||2||Historical|
Sangeang Api volcano, one of the most active in the Lesser Sunda Islands, forms a small 13-km-wide island off the NE coast of Sumbawa Island. Two large trachybasaltic-to-tranchyandesitic volcanic cones, 1949-m-high Doro Api and 1795-m-high Doro Mantoi, were constructed in the center and on the eastern rim, respectively, of an older, largely obscured caldera. Flank vents occur on the south side of Doro Mantoi and near the northern coast. Intermittent historical eruptions have been recorded since 1512, most of them during in the 20th century.