[Snickering Hound]

I wonder if any of our tests at Yucca Flats ever reached magnitude 6.3? This seems very unusual.

Nope, tubby wants everyone to know he has the H-Bomb.

[lefty-lie-spy]

We did a 5Mt underground test in Alaska in the 1960s. That was big. 6.3 magnitude could well be a megaton or more. I’m guessing a few hundred kilotons at least, and that’s definitely a thermonuclear explosion.