BCDEFGHIJKLMNOPQRSTUV
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MilesPSIWind SpeedTemperatureRadiation (rem) “roentgen equivalent man.”Effects
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bleaching of the visual pigments and temporary blindness for up to 40 minutes.
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0.3
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1.2Thermal radiation radius (3rd degree burns)
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1.520Urban areas completely levelled (20 psi/140 kPa)
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1.712At 1.7 miles, only some of the strongest buildings — those made of reinforced, poured concrete — are still standing. Ninety-eight percent of the population in this area are dead.
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2500At the 500rem dosage, mortality is between 50% and 90%, although this can be mitigated with prompt and sophisticated medical care
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2.75160Single-family residences within this this area have been completely blown away — only their foundations remain. Fifty percent of the population between the 12 and 5 psi rings are dead. Forty percent are injured. A typical two-story house subjected to 5 psi would feel the force of 180 tons on the side facing the blast.
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3.95160Destruction of most civilian buildings (5 psi/34 kPa)
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4.5Air blast radius (widespread destruction)
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4.71the heat emanating from the fireball will cause a first-degree burn (equivalent to a bad sunburn ) to any exposed skin facing the light.
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51And if you’re five miles away, the thermal radiation will cause third-degree burns — a much more serious injury that would require prompt medical attention.
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61Conflagration
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71
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7.51Third degree burns
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9.31Second degree burns
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10.61Moderate damage to civilian buildings (1 psi/6.9 kPa)
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11.81First degree burns
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3013000Much more than a lethal dose of radiation. Death can occur within hours of exposure. About 10 years will need to pass before levels of radioactivity in this area drop low enough to be considered safe, by U.S. peacetime standards.
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901900A lethal dose of radiation. Death occurs from two to fourteen days.
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1601300Causes extensive internal damage, including harm to nerve cells and the cells that line the digestive tract, and results in a loss of white blood cells. Temporary hair loss is another result.
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250190 Causes a temporary decrease in white blood cells, although there are no immediate harmful effects. Two to three years will need to pass before radioactivity levels in this area drop low enough to be considered safe, by U.S. peacetime standards.
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