On the D7 Canadian from 0z which I posted last night—notice how the Jet splits before hitting North America. That’s what we need to see more of. BUT its going to be hard to get a sustained +PNA pattern or REX BLOCKING along the west coast and in the EPAC w/ the strong Aleutian low unless the SSTA configuration changes and the warm pool re-develops in the GOA.
The strong warm pool NW of HI which we were dealing w/ much of last month and the first week of this month has weakened, dispersed to a degree, and moved off to the east NOT NE into the GOA. It is significant since you get for the most part a fast zonal flow over that region (enhanced PAC JET) instead of the SW to NE flow you would see IF there were a pronounced Aleutian low in place.
Bottom line, the PAC set-up is looking more and more like 1968-69.
BTW heck of a SVR wx outbreak coming for AR/MS/LA/TX TUE and WED as the potent closed h500 low and associated vort max creates an environment favorable for strong large scale forcing/ upward motion over the region enhanced by divergence in the left exit region of a strong h300 jet streak rounding the base of the negatively tilted trough.
Gravity wave formation MAY also occur. Notice the jet maximum rounding the base of the trough and propagating toward the ridge axis and pronounced diffluence over the region w/ the SFC warm front to the south.