San Onofre shutdown will mean tight electricity supplies

[PamW]

100. Not necessarily

AtheistCrusader states:
A 5.3 at 10 km under your ass would get your attention

Not necessarily. I live in earthquake country in northern California.

A little while back, there was a 5.3 magnitude fault on the Calaveras fault at about 10 km.

I didn't feel it at all because I happened to be up walking at the time. People who were quietly sitting did perceive the quake, but it's really too mild to be felt if you are up and moving.

Evidently FBaggins is correct; that you don't understand the implications of the Richter scale being logarithmic.

For example, a 5.8 quake would certainly get one's attention, even if moving about. That's because that additional 0.5 added to the magnitude value results in a quake that is over 3 TIMES larger.

A little remedial high school mathematics study might be in order.

PamW