[antidisestablishment]

We’d probably hear it in Florida. Lava isn’t an issue with this volcano. The ejecta estimates range from 10^11 to 10^12 CM. Given the location; significant earthquakes and possibly other eruptions could be triggered throughout the country. It’s explosive index is 7-8:

https://sizes.com/units/volcanic_explosivity_index.htm

Krakatoa was a six; it ejected over 11 cubic miles of ejecta, was heard 3000 miles away and caused a 1.3C drop in global temperature:

http://mentalfloss.com/article/67852/10-facts-about-krakatoas-1883-eruption

[ProtectOurFreedom]

Wait a sec there. Krakatoa ejected 10¹ CM but Yellowstone could eject 10¹¹ CM? TEN Orders of Magnitude more?

The volume of the entire earth is 260*10⁹ CM. It would be quite a feat to eject the entire earth's volume and then some. Guess it would be like a balloon deflating.