Unless it’s over 6.5 it isn’t nothing.
That depends on where you are, if you're on thixotropic soil the number is lower, if you're in an area crisscrossed by multiple faults, each of which acts like a circuit breaker for the motion, the number is higher.
That all depends on where you are. If you are on sandy, water soaked ground it is like being on quick sand.
No, no. Any earthquake large enough to be felt across the large central and eastern US - from Oklahoma east, is so rare that is they matter. They rarely do a lot of damage, nor are they “important” other than as reminders of the massive New Madrid earthquakes, but they do matter.
“Unless it’s over 6.5 it isn’t nothing.”
Our local Emergency Management Director states that an earthquake larger than a 4.2 in Hendersonville would condemn the entire downtown.