Yeah I've been reading about that. At first when I saw the 6.4 number on the CWB site, I thought, well, that's big, but nothing too unusual. Apparently the depth and location made a difference. I suppose it might be scientifically difficult to prove any connection between atmosphere and earthquakes, but it's intuitively attractive. I can see ocean variances in temperature and currents perhaps playing a role as well. It is one big system, after all.