Semeru volcano news & eruption updates
Wednesday, Jul 25, 2012
The lava dome of Semeru volcano, East Java, is active and growing slowly our recent expedition group observed on 18-19 July during our trekking tour Volcanoes of Java. ...more
The active lava dome inside Semeru's summit crater as seen on 19 July (Photo: Andi / VolcanoDiscovery)
Tuesday, 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. ...more
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.
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. ...more [read all]
Thursday, Sep 15, 2011
Tuesday, May 17, 2011
Friday, Oct 31, 2008
The Darwin VAAC reported that a ash plume from Semeru that rose to an altitude of 4.3 km and drifted WSW on 22 October.
Monday, Oct 20, 2008
I was on a flight yesyerday from Jember to Surabaya with 2 friends and saw Mt Semeru explode at app. 09.37 on the 18 Oct 2008. We were about 20 km from the mountain when I noticed the the top had a small gray mushroom at the top with in a minute or so i was extremley greater in size. I would not be able to guess how high it rose but it was larger than the clouds around. I'm just sending this message as I did not read anything in the news. ...more [read all]
Thursday, Jun 12, 2008
Small pyroclastic flows and rockfall avalanches have been observed at Semeru since 22 May. The pyroclastic flows travelled a maximum distance of 2.5 km from the active crater. ...more
Thursday, May 22, 2008
Semeru's activity is increasing and VSI has increased the alert level to 3 (out of 4), recommending to keep at least 4 km away from the summit. ...more
Friday, Apr 25, 2008
Based on pilot observations, the Darwin VAAC reported that a plume from Semeru rose vertically to an altitude of 6.1 km (20,000 ft) a.s.l. on 21 April.
Thursday, Sep 27, 2007
A pilot reported a ash plume that rose up to 7 km on 22 September but there wasn´t ash detected on satellite images.
Saturday, May 12, 2007
Based on satellite imagery and information from CVGHM, the Darwin VAAC reported diffuse ash plumes from Semeru at an altitude of 4.6 (15,000 ft) a.s.l. during 3-5 May. The plumes drifted SW.
Thursday, Feb 15, 2007
Based on a news report, eruption plumes from Semeru drifted E on 10 and 11 February. Ashfall was reported from areas including the town of Lumajang, about 35 km E.
Thursday, Nov 30, 2006
Based on a pilot report, the Darwin VAAC reported an ash plume riging to 7.6 km (25,000 ft) on 22 November, drifting to the S. Various other reports and news sources indicate that the crater's typical strombolian is relatively powerful these days and that blocks and bombs are frequently ejected outside the crater.
Friday, Oct 27, 2006
Based on a pilot report, the Darwin VAAC reported that on 18 October, an eruption plume from Semeru reached 4.6 km (15,000 ft) a.s.l.
Thursday, Sep 28, 2006
Semeru volcano appears to be in a relatively active phase. based on satellite radar data, plumes from its ash eruptions have reached nearly 11 km a.s.l. during the past week.
Friday, Aug 18, 2006
Strombolian activity at Semeru was observed to be weak during the past days when our group observed and climbed the volcano. Ash emissions are taking place at irregular intervals of 5-20 minutes and rarely exceed 300-500 m in height. During the night, only little incandescent bombs and blocks are visible.
Thursday, Aug 10, 2006
Eruption plumes from Semeru were visible on satellite imagery on 2 August. They reached a maximum altitude of 5.2 km (17,000 ft) a.s.l.
Wednesday, Aug 09, 2006
According to the Darwin VAAC, on 24-25 and 31 July small plumes from Semeru were visible on satellite imagery and reached unknown altitudes.
Sunday, Jul 02, 2006
Based on a pilot report, the Darwin VAAC reported that an ash plume from Semeru reached 5.5 km (18,000 ft) a.s.l. on 25 June.
Monday, Jun 19, 2006
According to the Darwin VAAC, satellite imagery showed small ash plumes from Semeru on 6 and 12 June and minor ash-and-steam plumes on 11 and 13 June, all at unknown altitudes.
Friday, Jun 09, 2006
According to the Darwin VAAC, a pilot reported multiple minor eruptions from Semeru on 4 June. Small ash plumes were detected on satellite imagery on 5-6 June.
Thursday, May 18, 2006
An ash plume from Semeru at a height of 6.1 km (20,000 ft) a.s.l. was observed on satellite imagery.
Sunday, Aug 14, 2005
Semeru is in a state of high activity as observed by the VolcanoDiscovery team during the past days. Strong strombolian activity is taking place at frequent intervals of 5-10 minutes, producing billowing ash clouds of 1-2 km height and showering much of the summit cone with fresh gray ash.