The explosion sucks up bits of the ground around the bomb, carries them high into the air, blasts them into tiny particles and irradiates them. These particles can be carried hundreds, or even thousands of miles, as they slowly drift down to earth in a a "fallout cloud." Where the cloud passes and lands, it showers radioactivity. Exposure to uncontrolled radioactivity can be harmful to living organisms. Because winds are very unpredictable, the fallout information shown here is based upon the average winds. Small changes in the wind can cause large changes in the results.
Month of Blast | Average Total Rad.* | Description |
January | 810 Rads |
- 90% to 100% fatal.
- Death (if occurs) in 1 to 6 weeks
- Nausea, loss of appetite
- Malaise, fatigue
- Hair loss
- Life-threatening digestive upset
- Internal bleeding
- Temporary male sterility
- Permanent female sterility
- More susceptible to illness and infection
- Intense medical care required
- Treatment: bone marrow transplant
|
February | 840 Rads |
- 90% to 100% fatal.
- Death (if occurs) in 1 to 6 weeks
- Nausea, loss of appetite
- Malaise, fatigue
- Hair loss
- Life-threatening digestive upset
- Internal bleeding
- Temporary male sterility
- Permanent female sterility
- More susceptible to illness and infection
- Intense medical care required
- Treatment: bone marrow transplant
|
March | 980 Rads |
- 90% to 100% fatal.
- Death (if occurs) in 1 to 6 weeks
- Nausea, loss of appetite
- Malaise, fatigue
- Hair loss
- Life-threatening digestive upset
- Internal bleeding
- Temporary male sterility
- Permanent female sterility
- More susceptible to illness and infection
- Intense medical care required
- Treatment: bone marrow transplant
|
April | 790 Rads |
- 90% to 100% fatal.
- Death (if occurs) in 1 to 6 weeks
- Nausea, loss of appetite
- Malaise, fatigue
- Hair loss
- Life-threatening digestive upset
- Internal bleeding
- Temporary male sterility
- Permanent female sterility
- More susceptible to illness and infection
- Intense medical care required
- Treatment: bone marrow transplant
|
May | 820 Rads |
- 90% to 100% fatal.
- Death (if occurs) in 1 to 6 weeks
- Nausea, loss of appetite
- Malaise, fatigue
- Hair loss
- Life-threatening digestive upset
- Internal bleeding
- Temporary male sterility
- Permanent female sterility
- More susceptible to illness and infection
- Intense medical care required
- Treatment: bone marrow transplant
|
June | 630 Rads |
- 90% to 100% fatal.
- Death (if occurs) in 1 to 6 weeks
- Nausea, loss of appetite
- Malaise, fatigue
- Hair loss
- Life-threatening digestive upset
- Internal bleeding
- Temporary male sterility
- Permanent female sterility
- More susceptible to illness and infection
- Intense medical care required
- Treatment: bone marrow transplant
|
July | 730 Rads |
- 90% to 100% fatal.
- Death (if occurs) in 1 to 6 weeks
- Nausea, loss of appetite
- Malaise, fatigue
- Hair loss
- Life-threatening digestive upset
- Internal bleeding
- Temporary male sterility
- Permanent female sterility
- More susceptible to illness and infection
- Intense medical care required
- Treatment: bone marrow transplant
|
August | 330 Rads |
- 50% fatal.
- Death (if occurs) in 2 to 12 weeks.
- Nausea, loss of appetite
- Malaise, fatigue
- Hair loss
- Digestive upset
- Temporary male sterility
- Probable permanent female sterility
- More susceptible to illness and infection
- Medical care required
- Treatment: blood transfusions, antibiotics
|
September | 630 Rads |
- 90% to 100% fatal.
- Death (if occurs) in 1 to 6 weeks
- Nausea, loss of appetite
- Malaise, fatigue
- Hair loss
- Life-threatening digestive upset
- Internal bleeding
- Temporary male sterility
- Permanent female sterility
- More susceptible to illness and infection
- Intense medical care required
- Treatment: bone marrow transplant
|
October | 670 Rads |
- 90% to 100% fatal.
- Death (if occurs) in 1 to 6 weeks
- Nausea, loss of appetite
- Malaise, fatigue
- Hair loss
- Life-threatening digestive upset
- Internal bleeding
- Temporary male sterility
- Permanent female sterility
- More susceptible to illness and infection
- Intense medical care required
- Treatment: bone marrow transplant
|
November | 800 Rads |
- 90% to 100% fatal.
- Death (if occurs) in 1 to 6 weeks
- Nausea, loss of appetite
- Malaise, fatigue
- Hair loss
- Life-threatening digestive upset
- Internal bleeding
- Temporary male sterility
- Permanent female sterility
- More susceptible to illness and infection
- Intense medical care required
- Treatment: bone marrow transplant
|
December | 370 Rads |
- 50% fatal.
- Death (if occurs) in 2 to 12 weeks.
- Nausea, loss of appetite
- Malaise, fatigue
- Hair loss
- Digestive upset
- Temporary male sterility
- Probable permanent female sterility
- More susceptible to illness and infection
- Medical care required
- Treatment: blood transfusions, antibiotics
|