Google, Apple, Facebook and the telcos would have a good idea as to who has actually evacuated and where to. It would be very interesting to see that data, on a map, anonymised to a heat map. It is not clear where people are supposed to evacuate to, the reality would be most interesting, maybe it would just reflect a general heatmap of where people lived.<p>I am sure the NSA could pull up this information too but I don't imagine that town planning times and disaster emergency planners have access to accurate information. How do you find out who lives somewhere and where they are now? The Googles of this world know this information.