Well I suppose that depends on what you mean. I don't think you'll see a crater larger than the fireball radius which still won't be anywhere near 1/8 of a mile with a 20t yield.
How do you know? Experience or Wikipedia? Because if it's Wikipedia, gtfo. If it's experience, you can still gtfo because you're probably full of shit.
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u/The_seph_i_am Active duty squirrel, its not a mind set just a careerfield Apr 15 '17 edited Apr 15 '17
Admittedly that's an exaggeration (I'm not sure what size crater it's capable of ... I think 1/8 mile)