Welcome to the boards.
No one here can do either but my answer would be if you are properly prepared, it will not matter. I am not saying that to be some chest-beating survivalist (not with this sunburn), but to say that we all gather here to help one another prepare for such events, which increases our quality of life (not supresses it), by leveraging one another's strengths and diluting our weaknesses.
If you properly prepare, which is always ongoing, then bank closures do not matter (or matter "as much").
But to answer your question, there is no one here that will confirm that statement your neighbor made, which seems to be very much a rumor. Those rumors always seem to peg a date to them to sound official.