Can you outrun the wind?

I'm not a survivalist myself, I can't be, as I live in the city. If a real SHTF (shit hit the fan) event occurred I'd be screwed and die, with the rest of the city dwellers.

 One of the staples of survivalism is the bug out bag. Essentially three days supplies, enough to get you from where you are to where you want to be. I never thought I'd have the need for one until I read this article, especially the part:

we could see the explosion and diffusion into the North Pacific's winds and ocean currents of 10 times the radioactive material emitted by the Chernobyl disaster - rendering much of Asia, North America and many other corners of the globe uninhabitable for centuries.

So the issue there would be, could I out pedal the wind? You couldn't drive, the roads would be jammed. How far could I get before someone tried to jack the bike? How do you prevent that?

Would authorities let you leave? Government is fucked up, they may think they are "keeping order" by bottling everyone up where they are, even though it's a death sentence.

I assume since they said "North America" that would be U.S. and Canada. How far south would you have to go?

Would the government even TELL you the shit hit the fan, or would they wait until it was too late to "avoid panic"?

My synapses is that even if I was in the shape I was in when I had no car and biked everywhere(waist size was 34, took an athletic cut suit) the odds would be near or at 0. This is not just me being cynical, as stated above I DON'T think government would give people enough notice. This would allow the politicians and their rich friends to clear out without the roads being jammed up.

How fast do the winds travel? That is a HUGE factor and being no meteorologist I don't have a clue as to how much time you have to screw. The winds would probably hit California first as that is closer to Japan, but Mass is a shitty place to be, we are WAY up north, even in NORMAL traffic it takes days of 60mph driving to get to Florida. Mexico would be even worse and that is probably where you need to screw to, so yeah, thinking about it a bicycle is out, no way you could make it in time to avoid the poison rad winds. A wind pattern would be interesting, to find out just how far you'd have to go to avoid rad poisoning.

Well that was cheerful, I now know my intro was right, if that happened there is really no escape. I'd be buying a daisy farm, 6 x 3 ft plot.