I just like to keep my oar in, on the Alaska issue. Today's update shows lots of slab action, and I can now say it definitely went up a notch after that last big earthquake. Of interest is that some earthquakes are tickling the armpit, where we expect the next significant burp. I was not expecting any foreshock activity there.
Update: M4.2 just happened, on the north end of the band, depth 56 km.