Yellowstone would not be another Pompeii. It's a supervolcano. The closest analog would be Krakatoa, which was much, much smaller. Krakatoa noise was detected all over the World, and the sound traveled three times around the Globe.
Interestingly, if Yellowstone blows, it would stop Global Warming, in its tracks. Unfortunately, at the price of the destruction of most of the USA Civilization. The cooling would last for years. Since we just crossed 2° C ( from the 1750 baseline), it would be very interesting to study the aftermath, if it didn't cause millions of dead and dying citizens.
Interestingly, if Yellowstone blows, it would stop Global Warming, in its tracks. Unfortunately, at the price of the destruction of most of the USA Civilization. The cooling would last for years. Since we just crossed 2° C ( from the 1750 baseline), it would be very interesting to study the aftermath, if it didn't cause millions of dead and dying citizens.
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