Parts of USA - especially New England down into Mid-Atlantic...
Remember this:
https://en.wikipedia.org/wiki/Northeast_blackout_of_2003
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My area is on it's own circuit using Nuke power. It is where that cascade outage stopped.
We had a blip and back on.
The rest of the area - including a lot of SE Michigan were out for several days. Gas stations could not pump fuel.
Do you have 3 - 10 days of fuel, food, generated electricity... cause your phone won't stay charged for that long.