This was the year I got married, and the day before, I experienced the Adirondacks earthquake. That earthquake was a great waker-upper, but we didn't learn much from it. Now, Coalinga, that was a beauty!
On the surface, it was a typical disaster, with lots of buildings destroyed. Ground motions were estimated at 20-60%g by those nasty people who only think of PGA! I estimate the PGV at about 0.5 to 1 m/s. It's something that would knock you off your feet on the soft ground. It was an M6.7 earthquake, fairly close.
But the detailed study showed that only the usual suspects (loose brick) were destroyed! Anything that had the tiniest thought of resisting earthquakes did quite well. This was one of the major earthquakes that led the new discipline of 'Seismic Experience', which, as I have told you before, has been buried by self-interest groups. As usual, they found that pipes were never damaged.
The aftershocks were notable, mainly that there was an M6.0 right under a steam plant. Not a speck of damage! This earthquake alone convinced me that all those seismic analysis people were quacks! But they have the big money, and the next nuclear reactor will cost a billion dollars more because of it.