Back in the days when I was active on research in what we call Environmental Geology (geology that impacts people, usually negatively - like earthquakes, volcanic eruption, land subsidence, natural radiation , etc.) we found an interesting conclusion from studying the after-effect of an earthquake felt over a large area (it was a left coast quake):
The most serous effect was psychological. The largest 'cost' was paid at hospitals and dr. offices.
According to the psychologist on our 'team,' we all like to believe in something 'concrete (pun intended). Like, the earth is solid and we can count on 'the rock is our salvation.' when the ground shakes, it may shake our psyche as much as our body. So if a person is not used to a ground shake, it can seriously affect many folks.
I personally can relate to that. With a geologist companion, we were monitoring a well to calibrate the reaction of the water table to a massive earthquake. Now, you usually can't predict the exact timing of an earthquake - but this one we could!
Countdown - 7,6,5,4,3,2,1 - BOOM! We were one mile from the epicenter - the closest people allowed there - we had a chopper a hundred feet above us ready to evacuate us if necessary. And the largest thermonuclear device ever detonated (it was underground) in the continental US went off. So big, they couldn't use the Nevada Test Site - too close to Vegas.
Waves like surf rolled toward us cracking the frozen ground. We stood, feet braced wide apart as the waves rolled and lifted us. A nearby
mountain shook like a dog and huge boulders rolled down the flanks leaving high dust trails.
It was awesome (real use of that overused word). I still awaken sometimes at night remembering the experience - and we knew it was about to occur! Imagine if it was a surprise!
I served on a national geological committee to evaluate whether geologists should inform the public of an earthquake prediction (as we get better at predicting the time of an event). We suggested "no - our prediction accuracy is nowhere near good enough - and panic could be caused by such a prediction and folks hurt. Also, calling 'wolf' when you can't be sure there is one is not a good scientific idea."
So, geologists try to be informative of where earthquakes have happened - and the general probabilities of another event - but a good scientist tries to restrain ourselves in saying 'when.'
Enough - just understand the right coasties - nobody wants the surprise of ground suddenly moving - left coasties might be more used to it, but I'll bet (if you are really honest) everyone's heart rate gives a jump - or so said the psychologist on our team - and I know mine does!