[color:"red"] "What are the chances of getting any warning? None." [/color]
I have a less fatalistic view. There are warnings systems in place for hurricanes, volcanic, tornadic and tsunami activities. New Orleans had warnings; had people been better prepared with BOB's their circumstances could have been much better. If I lived in Portland Oregon, and Mt St. Helen's started spewing (again). I'd grab a BOB and plan a camping trip.
[color:"red"] "What are the chances of getting out of Dodge alive with nuclear debris falling for three days or so? Slim." [/color]
All the better reason to have plans in place and an acute understanding of your surroundings. Wind direction, traffic patterns, secondary road options.... how about a motorcycle? There's options......
I agree, don't live in a city that may attract terrorist, that's an option for many. And don't bug out if you don't have to, but, be prepared to bug-out if it is an option.
[color:"red"] "You can't escape from Mother Nature........." [/color]
In many cases you can escape Mother Nature but only if you choose not live in a path of destruction, (or below sea level, duh) and believe in the warning systems that are in place.