Ahh, I see the problem. You are looking at the USGS listing of California events.
I am looking at the same version through SCSN. Usually these are identical, but
for some reason, USGS is not listing any events in Southern California today, while
the SCSN version is. I suppose these will show up later. But cannot explain the
difference. According to personnel at Caltech, they should be identical.

Compare these:

SCEC California earthquake listing:

http://www.scecdc.scec.org/recenteqs/Quakes/quakes0.html

USGS California earthquake listing:

http://quake.usgs.gov/recenteqs/Quakes/quakes0.html

• SCEC California earthquake listing