I accidently contacted two live contacts in the Edison base of the close light socket. The screwdriver tip melted in a nice bright spark. [I was tightening loose contacts]
I was streaming audio to the computer, and the router, which is 10 feet away (in 3d measurement, and through 4 layers of drywall-if that has any attenuation properties?), just stopped working.
I had to unplug/re-plug, lucky for my wallet, it worked.
So for WW3, I imagine the Russians will attempt a simultaneous, or near simultaneous exo-atmospheric detonation of their biggest EMP device, ~200 miles up over Salt Lake City, Utah & Indianapolis, Indiana.
That gets everybody, and the middle strip: ND, SD, NB, KS, OK, TX twice, but at a slightly lower intensity.
If you are in Alaska & Hawaii, well, you had better already be self-sufficient before the party starts.