Board Thread:Wiki Management/@comment-27123758-20190314010201/@comment-25603146-20190413125959

That would just be CAPE.

Assuming the horizon is 4.7 kilometers away (as per the viewing distance for a 1.75 meter tall person), the area of the storm would be 6.94e+7 meters, and with a cloud height of 8000 m the total cloud volume would be 5.552e+11 m^3. Assuming strong (but not tornado level) instability (4000 J/kg), and you would get 2.2208e+15 Joules, or 530.78 Kilotons of TNT.