User blog comment:Spinosaurus75DinosaurFan/Shaking a town/@comment-31165326-20181216021752

Actually, while Meteorcalcs are pretty okay, there are better ways to do this, like just calculating Richter Magnitude and using that to determine joules.

(4)+1.1644+.0048*.804672 is 5.1682624256, 10^(1.5*(5.1682624256)+4.8) is 3.5677436e+12 Joules, 852.711190666 Tons, Multi City Block level