I think this is my last answer to this riddle. I am driving myself nuts! (have I mentioned I am not good at them?)

I liked the USK, sandpoint, Kalispell, continential divide connection. This led me to think west coast quake that divides the continent.

Then I thought well if it divides the continent that seems more like it would be New Madrid. So I looked at the new madrid fault line and sandy hook to see if there's any connection. I did find what appears to be the major natural gas lines, majority of which is under new madrid, seem to come to a point and then split off around Sandy Hook, Newtown, CT.

I also looked into Sandy Hook, Kentucky but it was a little east of the fault and I didn't see a connection.

Given the recent gas explosions in the madrid zone, the planetary changes and the fact the illuminati need something really big to try and push their plans through, I believe that this warning is that the New Madrid will go off on Christmas Eve and possibly the San Andreas as well splitting the continent apart, which is why the poster told us to stay safe.

I will even throw in a little mayan calendar which ends on the 23rd. So it makes sense the illuminati would pull something big on Christmas eve!

Here's to hoping I'm wrong because that would be horrific!