An estimate of the size with the damage due to the 16 kt and 21 kt atomic bombings of Hiroshima and Nagasaki. The large temperatures and radiation result in gasoline to move outward radially in a thin, dense shell named "the hydrodynamic front". The front functions just like a piston https://codylgvwn.wikibriefing.com/3337177/rumored_buzz_on_zone_radiative_soleil