OP posted this yesterday, and today..

Thread: Earth Quakes... NOW ALL IN Puerto Rico !

[link to earthquake.usgs.gov]

2.7
6km NW of The Geysers, California
2014-01-12 22:05:48 UTC2.0 km deep

2.5
7km W of Cobb, California
2014-01-12 20:36:03 UTC2.5 km deep

2.6
4km WNW of Cobb, California
2014-01-12 20:26:38 UTC2.8 km deep

4.5
6km NW of The Geysers, California
2014-01-12 20:24:46 UTC2.5 km deep

... earlier ...

3.4
46km NNE of Old Faithful Geyser, Wyoming
2014-01-12 01:46:59 UTC8.8 km deep

And this is magnitude 2.5 or higher. In the other thread they examine all of the tremors (and there are a lot).