Apologies if the post comes off sensationalist. I am not currently actively taking these steps as I don't perceive a significant threat. That's as a lay person. Having said that, it may be helpful to have something in mind if the unthinkable occurs.
In case of issues with gov infrastructure, here are two more backup links:
https://web.archive.org/web/20190101153955/https://www.ready...
https://nuclearadvice.org/