I'd love to know what the TNT equivalents are of this.
There's only about 2 or 3 volcanoes that have had explosions so violent that pressure waves have travelled round the world.
Tambora and Krakatoa come to mind.
Krakatoa was 220 megatons equivalent and the shock wave went round the planet 4 times.
Tsar Bomba the largest nuclear weapon ever detonated. That was detonated in 1961 and it was 51 megatons equivalent and that travelled round the world twice.