I've seen that it could correlate with +PNA activity going forward. Will be interesting to see if that happens, because the -PNA has been so strong this year. It actually started right when the ENSO subsurface went negative in mid February, and the subsurface was in "Moderate Nina" range all year until recently. Now the subsurface has neutralized, and there isn't really a -PNA for the next 15 or so days..