An EMP pulse weapon would be detonated hundreds of miles about the ground, how do you figure out the wind direction where that device was detonated after the internet, commercial radio stations, etc have all been knocked offline (assuming your personal electronics survived)

EMP's have numerous causes besides nuclear bombs, perhaps "After the blast" is more appropriate here.

It's probably a better idea to shelter in place for a week, with windows closed and a hepa filter installed.

You wouldn’t get much fallout from EMP. It has to be an upper atmosphere detonation to get the EMP.

yeah, but you can't be moving forever. When you stop and setup a base, you will need something more than a basic walkie-talkie, right?