Major changes from NOAA:
The forecast next week will hinge on the strong 500 MB low over Baja
California/northern Mexico and the interaction with the copious
amount of upper level energy coming out of the Gulf of Alaska and
then digging southeast through the Pacific Northwest Sunday Evening.
Good clustering of the Euro ensembles with the surface low tracking
north-northeast through Iowa/Minnesota on Tuesday, but then likely
translating southeast. Significant differences for the mid/late week
in how strong the system ends up being and the amount of cold air
infusion, as the Canadian and Euro have trended colder, with 850 MB
temps of -6 to -8 C cold enough for snow underneath the cold cold/mid
level circulation, but that looks to be just south, over the Ohio
Valley at the present time.
It's crazy to see how badly the models are digesting the high lat blocking. The immense shifts in the EPS and GEFS are an understatement..however, the AIFS might have had the right idea all along with the 2nd storm tracking into the GL's.