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 | 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
|
| February | 290 Rads |
- 35% fatal
- Death (if occurs) in 2 to 12 weeks
- Nausea, loss of appetite
- Malaise, fatigue
- Temporary reduced immune system functioning
- Temporary male sterility
- More susceptible to illness and infection
- Medical care required
- Treatment: blood transfusions, antibiotics
|
| March | 290 Rads |
- 35% fatal
- Death (if occurs) in 2 to 12 weeks
- Nausea, loss of appetite
- Malaise, fatigue
- Temporary reduced immune system functioning
- Temporary male sterility
- More susceptible to illness and infection
- Medical care required
- Treatment: blood transfusions, antibiotics
|
| April | 290 Rads |
- 35% fatal
- Death (if occurs) in 2 to 12 weeks
- Nausea, loss of appetite
- Malaise, fatigue
- Temporary reduced immune system functioning
- Temporary male sterility
- More susceptible to illness and infection
- Medical care required
- Treatment: blood transfusions, antibiotics
|
| May | 860 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 | 480 Rads |
- 60 to 90% fatal.
- Death (if occurs) in 2 to 12 weeks.
- Nausea, loss of appetite
- Malaise, fatigue
- Hair loss
- Serious digestive upset
- Temporary male sterility
- Permanent female sterility
- More susceptible to illness and infection
- Intense medical care required
- Treatment: blood transfusions, antibiotics
|
| July | 660 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 | 710 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
|
| September | 470 Rads |
- 60 to 90% fatal.
- Death (if occurs) in 2 to 12 weeks.
- Nausea, loss of appetite
- Malaise, fatigue
- Hair loss
- Serious digestive upset
- Temporary male sterility
- Permanent female sterility
- More susceptible to illness and infection
- Intense medical care required
- Treatment: blood transfusions, antibiotics
|
| October | 490 Rads |
- 60 to 90% fatal.
- Death (if occurs) in 2 to 12 weeks.
- Nausea, loss of appetite
- Malaise, fatigue
- Hair loss
- Serious digestive upset
- Temporary male sterility
- Permanent female sterility
- More susceptible to illness and infection
- Intense medical care required
- Treatment: blood transfusions, antibiotics
|
| 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 | 830 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
|