East and West snow through Christmas

Tomer’s Take: The next storm system for the Northeast arrives on/around 12/23 but might be too warm with rain initially then snow.

>Out West, an Arctic front 12/20-12/22 spreads snow north to south through ID, UT, MT, WY, CO.

>Then a NW type flow develops 12/23-12/26 favoring WY, ID, MT, CO, PNW, BC, Banff.

• Killington is reporting 22″ in 24 hours.
• Sunday River is reporting 22″ in 24 hours.

My forecast video 12/17:

Current Setup

Water vapor satellite shows a quiet period for the West. It turns more active on/after 12/20 with an Arctic front.

Orange/red = drier air aloft.

Forecast Pattern

Forecast jet stream valid 12/17/2022. A quiet period for the West.

Forecast jet stream valid 12/25/2022. A NW type flow develops 12/23-12/26 favoring PNW, BC, Banff, MT, ID, WY, CO.

Forecast Timing

Forecast radar/satellite valid 12/17-12/22.

Forecast Totals

Forecast snow totals (inches) valid 12/17-12/19.

Forecast snow totals (inches) valid 12/20-12/22. An Arctic front drags snow north to south.

Forecast snow totals (inches) valid 12/23-12/26. A NW flow develops forcing snow through PNW, BC, Banff, ID, MT, WY, CO.

Forecast snow totals (inches) valid 12/17-12/22. Most of this accumulation occurs as residual snow from the big snowstorm 12/16-12/17. Lake effect is also likely 12/18-12/19.

Forecast snow totals (inches) valid 12/23-12/26. A large storm system hits on/around 12/23, but it might be too warm with rain initially then snow.