4-stage ash fall response plan compiled to prep for Mount Fuji eruption

"At the time, eruptions continued for 16 days, leaving a layer of volcanic ash about 4 cm thick in current-day central Tokyo, according to historical records."

You are only addressing about ashes but were there any casualties?

My. Fuji is a few hundred years overdue for an eruption. The more overdue it is the greater the likely hood of it being a major catastrophic eruption. It’s great to see a plan for ash rain but I fear it’s going to be much more including pyroclastic flow and choking clouds of smoke. There are nearly 5 million people living within 20 kilometers of the volcano.

My. Fuji is a few hundred years overdue for an eruption.

It isn't, It last erupted in 1707.

Mt. Fuji's eruptions do not follow a regular pattern I'm afraid.

It could also be Mount Fuji never erupts again. No one knows.

Is this photo for real? Looks like two photos combined in Photoshop.

The eruption cycle for Mt Fuji is estimated to be between 250 and 500 years so one might say "due" buy"overdue" is a stretch. I live at Yamanakako mura, the closest urban area to the mountain. We receive regular updates on evacuation procedures.

By the way, if you view Fuji from Gotemba you can see the crater on the side from the 1707 eruption. That was the largest vent but not the only one. It's referred to as the "Heie eruption".

It's only a naming plan, no concrete action hs been assigned other than the possibility of evacuation. THey'll need another panel to work on that!

When Mt. Fuji blows, evacuation plans will likely fall apart rather quickly. You think the ash ain't gonna fall on the roads? You think people are gonna be able to breathe with all that ash in the air?

Yeah...no.

Volcanoes almost never spontaneously erupt. Activity preceded by swelling on the mountain or slopes, pressure building up in the magma chamber and swarm earthquakes. All of these are closely monitored. So a sudden BOOM is highly unlikely.

The 1707 eruption was preceded by a massive shift along the entire Nankai Trough.

Awesome Photo / View but that tower is a major TURN OFF, it has to go.

That patch of snow below the snowcap is about 5 km from my condo.

@Eugene

Volcanoes almost never spontaneously erupt.

There was no warning before the 2014 eruption of Mt. Ontake that killed 60 people. That mountain was and is monitored.

"Mt. Fuji is a few hundred years overdue for an eruption. The more overdue it is the greater the likely hood of it being a major catastrophic eruption. It’s great to see a plan for ash rain but I fear it’s going to be much more including pyroclastic flow and choking clouds of smoke. There are nearly 5 million people living within 20 kilometers of the volcano."

Thanks Lindsay, it seems you have better information dissemination skills than JT by far.

T

Ontake eruption investigation:

The government said that the Japan Meteorological Agency had not raised the warning level even though earthquake levels were slightly elevated, because the warning level was based on additional data and historical activity.

That looks like an old photo/rendering. It's missing the Azabudai Hills Mori Tower.

Another good reason to ban people climbing up the ruddy thing.

Those photos of a huge Mt. Fuji mislead people visiting Japan for the first time and they expect to see Mt. Fuji this huge. I believe some surrealist artist create these photos and they are passed around like this is how huge Mt. Fuji is

Actually that is the exact same view as on the old ¥1000 note so taken from Motosuko.

The worst-case scenario would be a Great Kanto Earthquake triggering an eruption of Mount Fuji. In fact, the two phenomena have occurred together before.

The government must prepare for further disasters.

However, 19 million people live in the Kanto region alone, and evacuation efforts may not be easy.

Japan's LDP government urges to caution about natural disaster but almost ignores nuclear disaster risk despite lessons from 2011.