And it's vitally important to read what the Chafetz Chaim said about earthquakes (and other disasters) in far away places and what it means for us.
You've probably received emails and read abundant articles and quotes about what the Chafetz Chaim said, why Hashem brings earthquakes to the world, and so on.
And yes, there are segulot and practical steps to take to help oneself and others during an earthquake, chas v'shalom.
But if you're starting to feel overwhelmed, just take a step back and bring it down to basics: temimut/temimus.
Be tamim with Hashem.
In our daily morning prayer service, the following is found in most Orthodox prayer books (and yeah, the English translation for line 3 got switched with line 4, but the Hebrew is fine):