Map of UK's strategic nuclear targets

[NorthernRaider]

Wind direction is the least of your concerns chaps because you are working on the way outmoded concept of ground burst and subterranian burst weapons in the multi megaton range. Nearly everyone cept a few third world nations now use almost entirely air burst multi KILO ton devices. Still kills lots of enemy people with enhanced radiation output, but does not damage the ground or create much in the line of partical fallout. Its basically the nightmare of neutron bombs with a big EMP burst killing people and destroying electronics but not destroying the surface.. The days of raining huge numbers of multi megaton cities busters is now slight ( though not completely gone), its now well targeted accurate kiloton weapons aimed at stategic targets and nbearly all going off for enhanced EMP effect. Indeed the UK could be paralised by only 3 small airburst weapons detonated up in the ionisphere.