there is one strange factor that might give warning of a major quake.
they are called Earth Lights
http://en.wikipedia.org/wiki/Earthquake_light
Even USGS agrees they exist.
Thanks, I’ve never even heard of them!
You seem to know a lot about earthquakes. I just felt my first one last month on “the madrid fault” scared the hell out of me. I am just curious about quakes, always have been, since my science teacher taught me how close I live to a major fault.
Thanks