After months of unrest at Hakone a small eruption has taken place at some point between Monday evening and Tuesday. The alert level was raised to 3 on the Japanese Meteorological Agencies 5 point scale, after ash fall was notice in the area. At 6.56 am local time a magnitude 3.3 occurred in the area which is the strongest felt there since activity increased in April.
Hakone has not erupted since some point between the 13th and 14th centuries and eruptive style has not be well studies so there are increased worries of how this will play out especially with the nation’s capital Tokyo just 80 km to the north.
I will update when more news comes through.