reply to post by mopusvindictus
exodus will not occur immediately after the event, rather it will be a continuous flow of people out of urban regions and will vary substantially with
regards to the urban regions' size (particularly the expanse of its built up hinterlands, sprawl or whether it is connected to other urban centres)
as well as climatic conditions and geographic landforms.
90% of a population is a good bet as to the amount that will never leave an urban area prior to surcoming to death in whatever form it might be;
however, with large, continuous developed areas with populations in excess of 10million, that 10% that escapes will be substantial in numbers.
Albeit it will be spread out and diluted as the population moves in a centrifugal fashion away from the original population centre, but you should
still expect to see groups in their thousands most certainly in their hundreds.
How far they will go before either dying or simply stopping will depend on a lot of things, but being more than 300 kilometers from the nearest major
population centre will ensure your safety, at least for the first 6 months or so.

