Effects of One Megaton (Van size) bomb in Downtown Dallas, Texas

ASSUMPTIONS:

Wind speed: 15 mph

Wind direction: due east

Tirne Frame: 7 days

KEY:

3,000 Rem

Distance: 30 miles

Much more than a lethal dose of radiation. Death can occur within hours of exposure.

About ten years will need to pass before levels of radioactivity

 in this area drop low enough to be considered safe, by U.S. peacetime standards.

900 Rem

Distance: 90 miles

A lethal dose of radiation. Death occurs from two to fourteen days.

RADIATION – Emitted as a result of a nuclear explosion or meltdown at a power plant.

Symptoms of radiation poisoning: Nausea, vomiting, diarrea, fever,

 loss of appetite, malaise, hair loss, and hemorrhaging. In moderate cases,

 recovery generally occurs in about 3 months, if there are no complications.

Victims who experience the first symptoms of radiation poisoning within

 four hours after exposure will most likely die within 30 days.

300 Rem

Distance 160 miles

Causes extensive internal damage, including harm to the nerve cells and the cells

 that line the digestive tract. Also results in a loss of white blood cells and temporary hair loss.

90 Rem

Distance: 250 miles

No immediate harmful effects, but does result in tempory decrease in white blood cells.

Two or three years need to pass before radioactivity lowers enough to be “safe”.

One Kiloton Effects on Austin Texas

COLOR KEY:

Red -- Anybody within a 20 mile radius of the blast would be at risk of receiving lethal doses

 of radioactive fallout and would need to find adequate shelter within one hour of the initial blast.
Black -- Anybody between 20 and 40 miles from the initial blast would be at risk of receiving

 dangerous doses of radioactive fallout and would need to find adequate shelter within

 one hour of the initial blast.

Actual fallout patterns would depend on the prevailing winds.

One Kiloton Effects on Dallas, Texas

BLACK -  -- Anybody within a 20 mile radius of the blast would be at risk of receiving lethal doses

 of radioactive fallout and would need to find adequate shelter within one hour of the initial blast.
RED -  -- Anybody between 20 and 40 miles from the initial blast would be at risk of receiving

 dangerous doses of radioactive fallout and would need to find adequate shelter within

 one hour of the initial blast.