A large area of low pressure will form in the Gulf of Alaska this week and will send the first wave of moisture into the West Coast Wednesday. This is a fast moving piece of energy that should drop a quick 3-6 inches of snow Wed-Wed night at the base with 6-9 inches possible up top.
Then we should have a bit of a break on Thursday as the main low pressure area pushes slowly towards the West coast and begins to draw in copius amounts of subtropical moisture. The precip should pick up again sometime on Friday. The snow levels may start as low as 7000 ft. but will climb up to 8000 ft. as the heaviest precip pushes in through Saturday.
The forecast models are currently showing 8-10 inches of liquid possible next weekend. On the upper half of the mountain there could be impressive amounts of heavy snow, you may need a couple yard sticks to measure it. It could be wet at the base of the mountain for the first half of next weekend.
There will be cold air working in at some point, most likely sometime next Sunday. There should be enough precip left to drop a decent amount of snow even down to the base. We will continue to fine tune the details on the snow levels and precip amounts all week.
The forecast models diverge beyond week 1 with some showing low pressure continuing to spin off of the Pacific NW coast and continuing the storms into CA, while others build a ridge keeping us dry for a week. Stay tuned for updates. BA