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Semeru, the highest volcano on Java, and one of its most active, lies at the southern end of a volcanic massif extending north to the Tengger caldera. Semeru, a favourite mountain trekking destination, has been in almost continuous eruption since 1967. It is known for its regular ash explosions that typically occur at intervals of 10-30 minutes.
Stratovolcano 3676 m (12,060 ft)
East Java, Indonesia, -8.11°S / 112.92°E
Current status: erupting (4 out of 5)
Semeru webcams / live data | ReportsSemeru volcano videosSemeru volcano books | Tours
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
Typical eruption style:Explosive. Near constant strombolian activity, occasionally stronger explosions, lava flows and pyroclastic flows.
Last earthquakes nearby
Semeru volcano toursFrom Krakatau to Bali (16-days study and photo tour to Java, Indonesia) Volcanoes of Java (17-days walking and trekking tour on Java) Volcanoes of East Java (4-5 days walking tour to Bromo, Semeru and Ijen) Bromo, Semeru, Ijen (trekking tour to Semeru, Bromo, Ijen volcanoes (East Java))
Latest satellite images 
Semeru volcano news & eruption updates
Semeru volcano (East-Java, Indonesia): large pyroclastic flow
Sunday Feb 14, 2016 09:57 AM | BY: T
Pyroclastic flow at Semeru yesterday (image: Leopold Kennedy Adam @LeopoldAdam / twitter)
A pyroclastic flow (hot avalanche of fragmented volcanic material) occurred on the volcano's southern side yesterday morning, reaching 4.5 km length and producing an ash plume that rose to 26,000 ft (8 km) altitude. Darwin VAAC raised the aviation color code to RED.
Another, smaller flow seems to have occurred today.
The pyroclastic flow(s) were probably caused by sudden collapse of accumulated lava on the steep upper flank - inside the volcano's breached summit crater, a flat lava dome has been growing steadily during the past months and overspilling as viscous flow into the upper part of the ravine.
Previous news
Monday, Nov 09, 2015
The lava dome inside the summit crater continues to grow slowly. Andi climbed the volcano a few days ago and observed continuous degassing, sometimes followed by minor explosions.
[more]
Thursday, Oct 08, 2015
PVMBG reported that during August-29 September both white plumes and gray-to-brownish plumes from Semeru were observed rising as high as 600 m above the crater and drifting in multiple directions; inclement weather sometimes prevented observations. ...
[more]
Monday, Jun 15, 2015
Japa's highest volcano has resumed its typical, intermittent ash-righ explosions. ...
[more]
Wednesday, Nov 26, 2014
A recent visit at the summit of the volcano by our expedition leader Andi and Markus confirmed that "Semeru's lava dome is growing bigger and wider, and now has a diameter of 100-200 m. ...
[more]
Sunday, Sep 21, 2014
Our recent tour group on Java observed mild ongoing strombolian activity in the volcano's summit crater. ...
[more]
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