As some of us know, PBS’ old “blast mapper” page is now effectively defunct, for various reasons. And by that I mean that it won’t let one plug in the exact map location for the blast-map to be superimposed over. Truly, a sad day for all of us who enjoyed “dropping” a 25-MT nuke on our own houses.

But…surely there’s some mathematical formula for calculating fireball. crater, and blast radius, based on explosive tonnage?

Of course, any *perfect* calculations of a nuclear blast’s effects would have to take into account complex variables like detonation altitude, local terrain, atmospheric conditions, etc. But I wouldn’t need an *exact* calculation, just the rough “ballpark” estimate. Probably assuming the blast is a surface detonation.

I don’t suppose it’d be anything so simple as " (y) kilotons of explosive power divided by 3.14 = (y) crater diameter in feet"?