Recent earthquake activity question?

Since the Mexico earthquake on Easter, I have seen a steady increase in the amount of earthquakes California has been having. I have also noticed that the earthquakes seem to be moving north up the faults connected to and branching off from the fault the Mexico earthquake was on. With all this activity, do you think a large earthquake is definite? See recent quake activity I am referring to at - a href="http://quake.usgs.gov/recenteqs/" rel="nofollow"http://quake.usgs.gov/recenteqs//a