This just in from our friend Larry Schick, the Grand Poobah of Pow over at Ski Washington:
Long range computer models indicate an evolving La Nina induced weather pattern. The hallmark of La Nina for the NW is cool and wet — which translates to abundant , quality Cascade snow.
A La Nina winter will tend to nudge the storm track toward a cool and wet pattern. This is what I am seeing develop toward the middle and end of the week ahead. La Nina global circulation patterns over the North Pacific will favor this pattern during the winter. It does not mean the pattern will be continuous all winter. We will see this La Nina character come in surges – especially later in December January and February.
This week, a low pressure off the BC coast will couple with arctic air well to the north of the low. The system will slide south near Washington state with lowering snow levels and new snowfall.
Right now (depending on slope, aspect & elevation) We have a trace/ or nothing to probably 1-3 ft (upper elevations, north facing slopes). As stated before, we usually need 2-5 feet to open, as a minimum.
Later this week: I am confident in the “cold ” part of this pattern coming up. Snow levels will drop from 3000 feet on Wednesday down to 500ft Friday and Saturday. I am struggling with how much snow will fall , but I am sure everything that does fall on the ski slopes will be snow. Right now I’d guess ( Wed-Sat) 6-18″ new, minimum — upside potential: 1- 3ft is not unreasonable.
Grand Pubah of Powder