Via One Way Japan.com: Evacuation Plan Prepared For Mt. Fuji Eruption. This seems unlikely, but the article offers a great deal of disturbing information. Excerpt:
Since the Great Tohoku Earthquake of March 2011, scientists have been watching Mt Fuji for signs of activity.
The new readings, taken by the National Research Institute for Earth Science and Disaster Prevention, reveal that the pressure is at 1.6 megapascals, nearly 16 times the 0.1 megapascals it takes to trigger an eruption.
Therefore the pressure in Mount Fuji's magma chamber is now higher than it was in 1707, the last time the nearly 4,000-metre-high Japanese volcano erupted, causing volcanologists to speculate that a disaster is imminent.
According to retired professor Masaaki Kimura ( Professor Emeritus from the Faculty of Science of the University of the Ryukyus, Okinawa, Japan ) this and other recent phenomena indicate an eruption of Mt Fuji should have taken place in 2011 with a four-year margin of error ending in 2015.
In 2000 and 2001 a series of low-frequency earthquakes were recorded beneath the volcano, leading to widespread predictions of an imminent blow. Since the March 2011 tsunami and the 6.4 magnitude earthquake that followed four days later, Japan has been on tenterhooks, and in May 2012 Masaaki Kimura warned that a massive eruption within three years would be likely because of several major factors: steam and gases are being emitted from the crater, water eruptions are occurring nearby, massive holes emitting hot natural gases are appearing in the vicinity and finally, the warning sign that pushed the professor to make the announcement, a 34km-long fault was found underneath the volcano.
The fault, experts suggested, could indicate a total collapse of the mountainside if there is another significant shift, and it would probably cause a collapse in the event of an eruption, leading to huge mud and landslides.
Professor Toshitsugu Fujii, the head of Japan's volcanic eruption prediction panel, says an eruption could cause chaos and carnage all the way to Tokyo.
"Mount Fuji has been resting for 300 years now, and this is abnormal. It usually erupts in some form every 30 years. So the next eruption could be a big-scale explosive eruption If there is a large eruption, the government fears it could cause more than $30 billion in damage to public health and agriculture. Volcanic rocks will fall near the mountain. Ash accumulations in some areas could be as high as 60 centimetres. Even Tokyo, 100 kilometres to the north-east, could be coated in volcanic ash. Tokyo will be covered in a few centimetres of ash. Yokohama will be under 10 centimetres. Trains will stop, planes won't fly and crops will fail. Millions will be affected", said Professor Toshitsugu Fujii.