A new simulation of Yellowstone supervolcano shows that a supereruption would blanket the US with ash.
Results demonstrate that ash could be transported up to 1500 km! So look at the map below to determine in which hazard area you are!
The interesting study predicts different deposit thicknesses according to geography:
- Decimeters to meters of ash in the northern Rocky Mountains
- Centimeters to decimeters of ash in the northern Midwest
- Millimeters to centimeters of ash along the East, West, and Gulf Coasts.
The last Yellowstone eruption occurred about 640,000 years ago, covering North America and southern Canada with roughly 330 cubic kilometers of ash. A similar eruption would bury the entire US in more than a meter (about 40 inches) of volcanic debris and rocks.
In summary, everybody in the US would have a very bad time if the Yellowstone supervolcano would erupt! Take care!