Forgot to add there wasa Mag 7 earthquake that May: Tonga A magnitude 7.4 earthquake struck Tonga on May 23.

And then there was this thing:
A magnitude 8.3 earthquake struck the Sea of Okhotsk on May 24; so, as you might imagine, I was not doing too well with the code then. That was it until a magnitude 7.3 earthquake struck South Georgia and the South Sandwich Islands, on July 15.

http://en.wikipedia.org/wiki/Earthquakes_in_2013#May