A child does not need the forecast, the science, or the worst-case version. They need a short, true sentence about what is going to happen to them, and someone calm saying it.
Whatever the event, the same three things do almost all of the calming: name what they will feel or hear before they experience it, tell them who is with them, and give them something to do with their hands. Every page in this guide is a version of that.
What changes between a hurricane, a power outage and an earthquake is the detail, not the approach.
What to actually say, and the sentence that does the calming.
The dark and the quiet, not the outage, are what actually unsettle them.
The order that works once it has already happened.
Why thunder is worse at bedtime, and what actually settles it.
What it feels like from a small child's height, and how to talk about aftershocks.
The sirens and the broken routine are the hard part, not the event.