Volcano news: Lokon
Lokon volcano (North-Sulawesi, Indonesia): continuing seismic unrest
Friday Nov 13, 2015 08:14 AM | BY: T
Seismicity at Lokon volcano during 2015 so far (VSI)The volcano has been relatively calm at the surface, but internal unrest continues to be significant. VSI keeps the alert level at "Siaga" (Alert) or 3 (out of 4), where it has been since July 2011.
A mild gradual increase in seismic activity over the past 2-3 months has been noted. The latest bulletin issued yesterday reminds the public to keep a safety distance of 2.5 km around the Tompaluan crater, where new fractures were formed during and after the eruption on 13 Sep last year. Sudden phreatic or phreatomagmatic explosions (caused by overheated steam and/or contact between water and magma), with associated ballistic ejections, pyroclastic flows and ash falls could occur any time with little to no warning.
Wednesday, Nov 11, 2015
PVMBG reported that during 28 October-5 November observers at the post in Kakaskasen Tomohon (North Sulawesi, 4 km from the crater), saw white plumes rising as high as 125 m above the crater. ... [more]
Monday, Aug 31, 2015
A small eruption occurred again last Saturday, producing an ash plume that rose approx. 2 km and drifted northeast, caused a temporary closure of the Manado airport. ... [more]
Thursday, May 21, 2015
An explosion occurred Wednesday (20 May) at 15:22 local time and produced an ash plume of approx 1.5 km height. The eruption was accompanied by strong explosion sounds, that caused concern in nearby villages and the town of Tomohon. After the initial explosion, mild ash venting continued for a while. ... [more]
Saturday, Sep 13, 2014
Small ash emissions along with white steam plumes have occurred again from the volcano recently. At the moment, there is no indications that they have been caused by new magma near the surface, and could be phreatic in nature, or due to disturbance of the hydrothermal system. [more]
Tuesday, Sep 24, 2013
No more explosions have occurred and degassing also has been much reduced recently. While the latest eruptive phase seems to be thus over, it is only a matter of time when the next one will occur. [more]