There are some that no information will be given and earthquake will occur and this can differ from country to country. The only thing is that earthquake does not just come at once, it will first come for some seconds which should be a warning that people should leave their house or the building that they are to a level ground which are the safest places at the time. The earthquake will then come in full force after some minutes which can destroy buildings that are not very strong.
Agree that's what mostly happened.
That's why when the first earthquake come, you need to have a good reflect to run and grab your seed phrase, then get our from your house. You need to leave your seed phrase in a place that not really hard and not require a lot time to get it.
It's similar to cell phone and wallet, whenever something happen, they will try to grab their cell phone and wallet first.