“Out in LALA-land, 4.5 would go unnoticed, unfelt, and definitely unremarked. Call in with 6.5 or better.”
I think they are different kinds of earthquakes. The Big One on the New Madrid fault was felt several states away - another big one on the NM will be devastating.
I may also be a carrier! After returning to Maine ... you guessed it .... quake! They even had a baby-quake in FL after I showed up.
That NM shake was unbelievable. Fortunately, practically no one was living out there when the Mississippi changed course, new lakes appeared, and the topography of the entire region was altered.
Lots more of these armageddon-quakes a-building out there: Mammoth in CA. Yellowstone. etc. Just remember that old SF Jug band, "The San Andreas Fault Finders"
IIRC, it was credited with ringing church bells in New England.