Scientists do not know when. Contrary to popular belief the volcano does not erupt at regular intervals. Scientists have not monitored the volcano for long enough to get a good idea of its general behavior. However, it is highly unlikely that it will erupt in our lifetimes.
There is no reason to believe Yellowstone will erupt any time in the next century.
no
Yes. Yellowstone National Park is a recently discovered supervolcanoe. It has erupted before and is supposed to erupt soon.
There is no scientific evidence to suggest that Yellowstone will erupt in 2018. The volcano is closely monitored by experts, and any potential eruption would likely be preceded by warning signs.
I consider an eruption in Yellowstone in 2012 VERY unlikely, mostly because it's now 2013.
It is extremely unlikely. Currently, there is no indication that something is developing.
Yes. It erupted 3 time in the last 2.1 million years
Yellowstone's last magma eruption was about 70,000 years ago. The last super eruption was approximately 640,000 years ago.
2012
The super volcano at Yellowstone National Park is 35 miles by 45 in diameter. It is one of the largest volcanoes in the world and when it does erupt it will likely cause a mass extinction.
Yes. It's only a question of when, which is why the supervolcano's caldera is closely monitored.
It will erupt for the same reason that all volcanoes erupt: magma is collecting in the magma chamber and pressure is increasing. This will eventually reach a breaking point and result in an eruption. The chances of that occuring in our lifetimes however, are very small.