Semeru volcano news & eruption updates
Semeru volcano (East Java, Indonesia): alert level raised to 3 due to an increase of activity
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.
Mon, 6 Feb 2012, 11:3011:30 AM | BY: TP
Only small to moderate eruptions had been occurring over most of the past year. Between 29 December and 15 January, 8 explosions were counted which produced ash clouds up to 600 m high. One explosion threw incandescent bombs to a distance of 300 m from the Jonggring Seloko crater. During 15-29 January, only weak explosions were recorded and a small steam and ash plume rising 25-50 m was observed.
Between 30 and 31 January, 5 explosions were recorded. They produced incandescent fallout in up to 400 m distance. On 2 February at 07:47 local time, a stronger explosion produced incandescent bombs that reached 750 m distance and caused a small avalanche of blocks rolling down a distance of up to 2.5 km (note: no pyroclastic flows). The heightened activity triggered the raise in alert level the following day.
At its present status level of 3, PVMBG recommends to stay away at least 4 km from the summit on the SE side of the volcano and climbers are advised not to approach the Jonggring Seloko crater less than 1 km.
As of 6 February, no significant changes to its activity have been reported by our correspondent on location.
Links / Sources:
Links / Sources:
- Peningkatan Status G. Semeru dari Waspada menjadi Siaga (Pusat Vulkanologi dan Mitigasi Bencana Geologi, PVMBG)
Thu, 15 Sep 2011, 06:43
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. ... read all
Tue, 17 May 2011, 21:54
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. ... read all
Fri, 31 Oct 2008, 14:42
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. ... read all
Mon, 20 Oct 2008, 16:28
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. read all
Thu, 12 Jun 2008, 09:39
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. ... read all