The points you mention about preparation, organisation and also being calm are excellent, because in moments of nerves you don't think well at all.
In this post I remembered what happened in the city where I was born a few weeks ago, it was chaos, many people lost everything and many disappeared because of the tornado.
It is normal to have storms there, but not like the one that happened and a proper preparation would have prevented greater evils.
In my case I always like to have the supplies you mention, in fact I have almost all the points up to date, but that is already a habit of mine, I don't know if I do it in case of emergency or because by nature I like to be prepared.
Two months ago there was a fire in the building. In the courtyard on the first floor, but we thought it was in the building itself. My mother got so scared that she couldn't think but I kept calm, reasoned and acted very well calling the fire brigade and so on. Everything turned out well.
All this is very important to keep in mind. Thank you very much!