How far to evacuate?

[NorthernRaider]

Air temp, ground temp, wind direction, barometric pressure, ground geography, forested or unforested, build up or rural all affect stuff as varied as nuke blast, fallout paterns or chemical dispersant patterns. nearly all accepted versions of safe estimated areas went out the window after the Mt St Helens blast cos the mud flows, ash clouds and pyroclastic flows all went different directions. And that Japanese husband and wife team of vulcanologists got wiped out in asia when they thought they had reached the generally accepted rule of thumb safe distance. The topgraphy actually increased the range of the pyroclastic gas blast and the scientists all died. On RT yesterday they reported on the effects of the French nukes in French polynesia in 1974 every one of their forcast dispersal patterns turned out to be horrible wrong because there are just to many chaotic principles that can alter events.
so estimating safe areas for natural events is difficult.
So then we move onto man made issues like terror attacks or warfare.

The Germans used to bomb London, so many civvies fled, The IRA and Al Quaeda learned from this and planted small diversionary devices in one place, detonated them thus causing the people to flee to another area, but THAT is where the terrs actually planted their big bombs thus increasing the amount of casualties.

The yanks drove the Iraqis back into Iraq from Kuwait and used bombing runs and missile attacks to push the Iraqi forces nearly all onto one particular highway, thats where the Americans waited with their A10 Warthogs and totally exterminated thousands of Iraqis troops and vehicles.

In London some experts clame the 7/7 tube / bus attack was coordinated that way, IE set off the bombs on the tubes and drive the commuters up to the surface and onto the buses where more bombers waited.

In Japan the terror group whose name I forget did some attacks that caused a change in commuter travel patterns and then launched the Sarin attack on their underground system.

In todays world "Safe distance" often now means out of the fireplace and into the fire.

In Britains enhanced, diverse, inclusive, multi cultural socialist paradise of 2013 I dont know if we can afford the luxury of safe distance any more. Anyway as we have so often discussed until we end up offending each other its not really applicable to rural preppers any more who have learned to avoid cities, and the urban preppers who stay put regardless of the evidence.