At that point, the resulting fires over an area of between 100 and 150 square miles on Earth would efficiently heat large volumes of air near and above the ground. The energy released by this mass fire would be 15 to 50 times greater than the energy produced by the nuclear detonation. The rising hot air would reach wind speeds of 300 miles per hour and be so intense they would knock airplanes above the fire zone from the sky.
This “chimney effect” would pull cool air from outside the fire zone towards the center of the fire at speeds of hundreds of miles per hour. These superheated ground-winds of more than hurricane force would further intensify the fire....
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