I can think of 2 fairly recently: the one off California where someone posted a pic of the coastline throwing up smoke clouds, and the one near Jeffrey Epstein's island: both of those had the explosion waveform instead of a normal EQ long rumble waveform.
I think so (opinion). am trying to find the waveform image someone else posted for that earthquake; it looked just like the one for that other island, which happened maybe a week or less before then.
This is the waveform comparison for the southern CA EQ of the photo (all images from other anons)
sorry, back when I found the EQ details I tried but I couldn't get the site to work for me. https:// www.iris.edu/hq/inclass/software-web-app/iris_earthquake_browser