9999 Yellowstone Eruption
VEI 7 eruption (USGS)
Volcano Yellowstone
Date September 9, 9999
Time 9:09 PM PDT
Eruption type Ultra-Plinian
Location Wyoming, USA
Fatalities No Casualties
Damages $12.5 billion (2017 USD)
Other impacts Pyroclasts, Ash Falls, some lavaflows, global temps cooled 0.7C

The Beginning

The Eruption

The Aftermath


Destruction and Eruption

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