Fallout Weather Upper-air winds, read for fallout

Educational tool. Not an emergency alert system or official guidance. In an emergency, follow instructions from authorities.

Where would today's winds carry fallout near Oklahoma City, Oklahoma?

The map below estimates where today's forecast upper-air winds would carry fallout from each potential target near Oklahoma City, and whether any of it could reach the city.

Oklahoma City is itself on this site's list of potential targets (Tinker AFB / Oklahoma City). Close to an explosion, blast and heat are the main dangers, and fallout would begin within minutes whatever the wind.

There are 7 other listed targets in range of Oklahoma City. The nearest is Dallas, about 190 miles to the south-southeast. F.E. Warren missile field is within 600 miles; a missile field would take many ground bursts, and its fallout can travel much further than that of a single explosion.

Winds high above the continental United States blow from the west more often than not, so targets to the west of Oklahoma City are upwind most often: Pantex plant / Amarillo. On any given day the pattern can be quite different, which is what the map below shows.

Listed targets in range of Oklahoma City (illustrative, not a prediction)
Potential targetTypeFrom Oklahoma City
Tinker AFB / Oklahoma City, OKMilitary siteHere
Dallas, TXMetro area190 mi south-southeast
Pantex plant / Amarillo, TXMilitary site228 mi west
Dyess AFB, TXMilitary site250 mi south-southwest
Kansas City, MOMetro area298 mi north-northeast
Barksdale AFB, LAMilitary site301 mi southeast
Whiteman AFB, MOMilitary site314 mi northeast
F.E. Warren missile field, WYMissile field, many ground bursts531 mi northwest

Many factors affect where fallout travels and how dangerous it is. This educational tool takes only three into account: the forecast winds from the ground up to the top of the mushroom cloud, an assumed weapon size, and an assumed burst type (on the ground or in the air). The target list is illustrative, not a prediction. How to read the map.

Official preparedness guidance

This is a summary of public guidance from Ready.gov and the CDC. It does not come from this map, and the map should not be used to make emergency decisions.

  1. Get inside. Official guidance is to get into the nearest solid building, as deep and central as possible: a basement, or the middle of a large building.
  2. Stay inside. Official guidance is to stay sheltered for at least 24 hours unless authorities say otherwise, because fallout radiation is strongest in the first hours and decays quickly.
  3. Stay tuned. Follow official instructions, for example by battery-powered or hand-crank radio.

Read the sources: Ready.gov: Radiation Emergencies and CDC: Radiation Emergencies. Our fuller summary lists each source.