Volcanoes & Earthquakes - new app for Android
Guaranteed tours
8-16 May 2021: From Stromboli to Etna - Sicila and Eolian Islands (Italy)
24 Jun - 8 Jul 2021: Colors of Iceland: Fire, Earth, Ice and Water - Iceland
30 Jul - 13 Aug 2021: Colors of Iceland: Fire, Earth, Ice and Water - Iceland
: spaces available / : guaranteed / : few spaces left / : booked out
Semeru volcano
Stratovolcano 3676 m (12,060 ft)
East Java, Indonesia, -8.11°S / 112.92°E
Current status: erupting (4 out of 5) 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.

Semeru volcano tours:
From 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))

Semeru volcano (East-Java, Indonesia): large pyroclastic flow

Sun, 14 Feb 2016, 09:57
09:57 AM | BY: T
Pyroclastic flow at Semeru yesterday (image: Leopold Kennedy Adam ‏@LeopoldAdam / twitter)
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
Mon, 9 Nov 2015, 16:58
The active lava dome inside Semeru's crater in early Nov 2015 (image: Andi / VolcanoDiscovery Indonesia)
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. ... read all
Thu, 8 Oct 2015, 11:05
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. read all
Mon, 15 Jun 2015, 11:05
Eruption from Semeru on 11 June 2015 (photo: Aris Yanto)
Japa's highest volcano has resumed its typical, intermittent ash-righ explosions. read all
Wed, 26 Nov 2014, 09:55
The active lava dome of Semeru in late Nov 2014 (photo: Andi / VolcanoDiscovery Indonesia)
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. ... read all
Sun, 21 Sep 2014, 10:02
Strombolian activity in Semeru seen in mid Sep 2014 (photo: Andi / VolcanoDiscovery)
Our recent tour group on Java observed mild ongoing strombolian activity in the volcano's summit crater. read all

More on VolcanoDiscovery

Why is there advertising on this site?
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.