From what I’ve read, the vast majority of damage will be line of sight and travels like FM radio waves and happen instantly. Also, the further away the source is the less concentrated the energy is because it goes in all directions similar to the Sun’s energy.
There are other forms of energy transmitted and I can’t remember all of the details. There is a lot of information out there to research.
“lots of info to research”
So I’ve found but can’t seem to find this specific question answered. I’m a little surprised that so many Freepers would want to flame this simple question. I like to think that I’ve prepared my family for many emergency scenarios but fear in this instance I wouldn’t be able to get them to safety.