Semeru volcanoStratovolcano 3676 m (12,060 ft)East Java, Indonesia, -8.11°S / 112.92°E Semeru volcano eruptions: 1818, 1829, 1830, 1832, 1836, 1838, 1842, 1844, 1845, 1848, 1849(?), 1851, 1856, 1857, 1865, 1866(?), 1887, 1887, 1888, 1889-91, 1892, 1893, 1893-94, 1895, 1896, 1897, 1899, 1899, 1900, 1901, 1903, 1904, 1905, 1907, 1908, 1909-10, 1910-11, 1911, 1912, 1913, 1941-42, 1945, 1946, 1946-47, 1950-64, 1967-ongoing (as of 2013) Typical eruption style: Explosive. Near constant strombolian activity, occasionally stronger explosions, lava flows and pyroclastic flows. Semeru webcams / live data Last earthquakes nearby Semeru volcano (East Java, Indonesia) activity update: growing lava dome and ash explosionsWednesday Jul 25, 2012 09:58 AM | BY: T
![]() The active lava dome inside Semeru's summit crater as seen on 19 July (Photo: Andi / VolcanoDiscovery) There is an area of incandescence visible at the SW part of the dome inside the half-open summit crater, and it is producing regular small to moderate ash explosions. Ash venting and small explosions had resumed in 2011.
Previous newsTuesday, May 08, 2012
CVGHM reported that during 1-29 February multiple pyroclastic flows from Semeru traveled 500 and 2,500 m into the Besuk Kembar and Besuk Kobokan rivers (on the S flank), respectively. During 1 February-30 April dense gray-to-white plumes rose 100-500 m above Jongring Seloko crater and drifted W and N. Incandescence was visible up to 50 m above the crater during 1 February-31 March. Seismicity decreased from March to April. Observations indicated that the lava dome grew in April. On 2 May CVGHM lowered the Alert Level to 2 (on a scale of 1-4) and reminded the public not to approach the crater within a 4-km radius. ...
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Thursday, Mar 29, 2012
Our expedition leader Doni just returned from a visit to Semeru and reports that on 27 March, he and our group observed frequent explosions every few minutes, with many powerful enough to eject glowing bombs to produce small glowing avalanches down on the southern flank of the volcano.
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Monday, Feb 06, 2012
A slight increase in activity of Semeru volcano's activity has been observed by the Indonesian Geological Survey in recent weeks and its alert level was raised to 3 (out of 4, "watch") on 3 February 2012, after it had been on level 2 since 16 July 2009. ...
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Thursday, Sep 15, 2011
Our group traveling in East Java just returned from a visit to Semeru volcano and sends the following report: an active lava dome is growing inside the crater and there are 3-4 eruptions per day, and it seems that the size and frequency is increasing in the past days.
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Tuesday, May 17, 2011
As observed during a photo expedition in May, Semeru's activity consisted of a few small to medium ash explosions per day, and over the past weeks, it has been increasing. Access to the summit is open for climbers.
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