“a lengthy quake of significant magnitude”
Significant magnitude?
That’s no more than a squrrel fart here in Southern California!
Well when the squirrel farts big enough and California drops in the ocean, we will all cheer for you. You finally got a big one.
We are blessed with multiple faults that break up, dampen and scatter vibration.
They are on a solid plate that can ring like a bell.
Significance is relative to preparedness in a given area. A tornado in California equal in size of one in tornado country would have higher impact because people in California do not have readiness, basements (so much), etc. Similarly, a quake in California may seem insignificant due to California having infrastructure which was built with quakes in mind. Rain in Oregon, is experienced as nothing, same rain in Texas may have people sliding all over the road. A drought or heat wave in Oregon would have them cowering, same thing in Texas would be brushed off as nothing. So, everything is relative. Lived in all those places, so first hand experience.
Significance is relative to preparedness in a given area. A tornado in California equal in size of one in tornado country would have higher impact because people in California do not have readiness, basements (so much), etc. Similarly, a quake in California may seem insignificant due to California having infrastructure which was built with quakes in mind. Rain in Oregon, is experienced as nothing, same rain in Texas may have people sliding all over the road. A drought or heat wave in Oregon would have them cowering, same thing in Texas would be brushed off as nothing. So, everything is relative. Lived in all those places, so first hand experience.