You asked for earthquake medals, and I have one to add. This commemorates the October 1989 California quake that struck just as the first game of the baseball World Series was about to get underway between the San Francisco Giants and the Oakland Athletics.
I designed it for the 1990 medal issue of Liberty Numismatic Society, and my initials are nearly concealed in place of columns above the oblique clock image facing left.
One bit of trivia: at the time of the jolt the flag on San Francisco's ferry building had already been lowered for the day, and that is how I drew the image seen on the medal. Another society member convinced me that it would sell better with the flag flying gloriously, so that's how it came to be added at the engraving stage.
When the quake struck I had just emerged from a BART train station and was walking up some steps. A young couple in front of me lost their balance and started to fall back into me. I saw them coming and was just able to lean forward a bit to prevent them from sending us all down the stairs. There were only about five steps, but it would have smarted just the same. The only damage at home was one broken coin exhibiting trophy.
Here are photos of another 1964 Alaska earthquake medal, from one of my recent eBay sales (it sold for $27.60).