Ontake-san volcano news & activity updates:
Ontake-san volcano (Honshu, Japan) activity update: steaming, low seismic activity
Thursday Dec 18, 2014 16:02 PM | BY: TOMPFEIFFER
White steam plumes were observed during the past week. JMA reports seismic activity remained low, but maintains alert level 3, as sudden phreatic explosions could occur again.
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Previous news
Friday, Nov 14, 2014
JMA reported that cloud cover often prevented visual observations of Ontakesan during 5-11 November; white plumes rose 200-300 m above the crater rim and drifted NE, E, and SE. ... [more]
Friday, Nov 07, 2014
White plumes rose 100-300 m above the crater rim and drifted NE and SE during 29-30 October and 4 November. The Alert Level remained at 3 (on a scale of 1-5). ... [more]
Friday, Oct 24, 2014
The volcano continues to produce white steam plumes rising a few 100 m above the crater. According to press articles, 7 people are still missing from the 27 Sep eruption, but search and rescue operations are being suspended until springtime because of the winterly conditions. The Alert Level remained at 3 (on a scale of 1-5). [more]
Saturday, Oct 04, 2014
The volcano continues to emit plumes of steam and possibly some ash Tokyo VAAC reports. ... [more]
Wednesday, Oct 01, 2014
The death toll from Saturday's powerful, and deadly explosion of the volcano has now climbed to 48, press reports. The eruption was a sudden, unexpected (and unpredictable) phreatic explosion, i.e. caused by sudden evaporation of overheated water in the hydrothermal system of the volcano. ...
[more]
