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Ontake-san volcano
complex volcano 3063 m / 10,049 ft
Honshu, Japan, 35.89°N / 137.48°E
Current status: normal or dormant (1 out of 5) Ontake-san volcano eruptions:
27 Sep 2014, 2007, 1979-80, 774 AD
Typical eruption style:
explosive

Ontake-san volcano news & activity updates:

Ontake-san volcano (Honshu, Japan) activity update: steaming, low seismic activity

Thu, 18 Dec 2014, 16:02
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.
Previous news
Fri, 14 Nov 2014, 07:48
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. read all
Fri, 7 Nov 2014, 13:16
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). read all
Fri, 24 Oct 2014, 14:59
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). ... read all
Sat, 4 Oct 2014, 21:52
The volcano continues to emit plumes of steam and possibly some ash Tokyo VAAC reports. read all
Wed, 1 Oct 2014, 15:21
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. ... read all

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