I liived on the West coast for many years in LA,SF andSeattle, went through a lot of quakes. Those of us who were “natives” got very good at knowing the magnitude:
“That was a 3.8.” “That was a 4.6”
Such a useful skill...(sarcasm alert)
I was in Seattle for the Nisqually quake of ‘01. That one was a very impressive 6.8. The effect on people who had never felt one before was nothing less than traumatic. What will happen when the Great Cascadia quake hits is difficult to imagine.