Yellowstone Supervolcano Alert: The Most Dangerous Volcano In America Is Roaring To Life
The Yellowstone Caldera is one of nature’s most awesome creations and sits atop North America’s largest volcanic field.
Its name means ‘cooking pot’ or ‘cauldron’ and it is formed when land collapses following a volcanic explosion.
In Yellowstone, some 400 miles beneath the Earth’s surface is a magma ‘hotspot’ which rises to 30 miles underground before spreading out over an area of 300 miles across.
Atop this, but still beneath the surface, sits the slumbering volcano.
Until recently, Bob Smith had never witnessed two simultaneous earthquake swarms in his 53 years of monitoring seismic activity in and around the Yellowstone Caldera.
Now, Smith, a University of Utah geophysics professor, has seen three swarms at once.
Yellowstone’s recent earthquake swarms started on Sept. 10 and were shaking until about 11:30 a.m. Sept. 16.
“A total of 130 earthquakes of magnitude 0.6 to 3.6 have occurred in these three areas, however, most have occurred in the Lower Geyser Basin,” a University of Utah statement said. “Notably much of seismicity in Yellowstone occurs as swarms.”
It would explode with a force a thousand times more powerful than the Mount St Helens eruption in 1980.
Spewing lava far into the sky, a cloud of plant-killing ash would fan out and dump a layer 10ft deep up to 1,000 miles away.
Two-thirds of the U.S. could become uninhabitable as toxic air sweeps through it, grounding thousands of flights and forcing millions to leave their homes.