The effects of EMP (the *three* types inherent to an extra-atmospheric nuclear detonation) have indeed been tested/ demonstrated. We have NOT of course ever demonstrated the ACTUAL 3-phase effects of a high-altitude nuclear detonation designed for EMP optimization (X-ray emphasis).
Even with the assumption that “One Second After” and similar novels overstate the risk and the damage, I find it reasonable to presume enough of the overall complex infrastructure and supply chain would be sufficiently cascade-disrupted such that the overall ‘just-in-time’/ 3-day supply chain *WOULD* be at least temporarily completely shut down in affected areas.
YOU make the call. I recommend you at worst have a plan to survive 3-hour, 3-day, 3-week, 3-month complete failures of modern infrastructures and supply chains. If longer than 3 months - survival will be feudal. (gallows humor)
The direct effects might pale in comparison to the indirect effects on social stability and civility, even if the direct effects seem ‘minor.’
IMHO.
The thing that concerns me is the Northeast Power blackout of 2003.
For those who don’t think there could be far reaching consequences from an EMP, all we have to do is see what should have been a manageable local blackout turned into cause it cascade through the system.
My son has a friend who is aware of the issues of overloading the grid and warns that things like the Earth hour, where everyone turns off their lights for an hour and then they would naturally turn them back on all about the same time, could theoretically overload the system causing stations to trip and then the other stations would also trip from their increased load, and so it goes.
If that Northeast Power black out happened from just that, then I would consider it feasible that an EMP could take down a chunk of the grid and cause the same problem.
One Second After is a good book as well as One Year after.
They are both very plausible, IMO.
Kimmy has neither the missiles nor the warhead ... fake news/click bait.