December 2025 Forecasts and Discussions

[Canada Goose]

Don't forget: A mild November bodes well for December....

[wetcoast91]

Don't forget: A mild November bodes well for December....

That was for our old climate. A mild November bodes well for a mild December and January but also a cold February.

[Rubus_Leucodermis]

That was for our old climate. A mild November bodes well for a mild December and January but also a cold February.

applying the 1990 and 2021 timelines to the upcoming pineapple fest would seem to bode well for a January cold snap.

[HughCorne]

North shore ski hills in a world of hurt, so sad

[Michael1]

North shore ski hills in a world of hurt, so sad

Mt. Washington as well. It's just gruesome up there!

[Rubus_Leucodermis]

8.5˚C at 1500 feet aloft.

Altitude: 1479 ft
Latitude: 49.11°
Longitude: -123.13799999999999°
Temperature: 8.5°C
Wind direction: (missing)
Wind speed: (missing)
Time observed: 2025-12-06T09:17:36-0800
Time received: 2025-12-06T09:19:03-0800
Frequency: 131.725 MHz
Source: .C-GWUX

[AbbyJr]

Looks like another SSW mid month. This time it’s a Siberian event. FWIW, Siberian warmings as of recent have had a solid success rate in sending arctic air into SWBC/PNW. We will see if that trend continues.

IMG_0089.png

IMG_0090.png

[AbbyJr]

Back-to-back-to-back ARs next week will definitely lead to flooding in some parts of the PNW. Still some ambiguity on where they will set up and who will see the most rain.

AR #1 on Monday:
gem_mslp_pcpn_frzn_nwus_fh66-96.gif



AR # 2 Tuesday evening to Wednesday:
gem_mslp_pcpn_frzn_nwus_fh108-132.gif



AR # 3 on Friday:
gem_mslp_pcpn_frzn_nwus_fh168-192.gif



Next Friday is the one to watch for a significant and long lasting snowstorm for the central interior and north coast. Battleground regions between the arctic air to the north and the AR to the south.

So far it looks like Washington and Oregon will take the brunt of the AR’s. But they can shift in track quickly so still some uncertainty.

[HarrisonSasquatchWx]

On another note go Caps go! It's currently 11c @ the lake in Harrison a Nito approved temperature.

[Typeing3]

Looks like another SSW mid month. This time it’s a Siberian event. FWIW, Siberian warmings as of recent have had a solid success rate in sending arctic air into SWBC/PNW. We will see if that trend continues.


IMG_0089.png

IMG_0090.png

Could set us up well for the New Years period.

[HarrisonSasquatchWx]

Could set us up well for the New Years period.

Waz hoping for a snowy Christmas week oh well.

[Hawk]

Don't forget: A mild November bodes well for December....

[Canada Goose]

[Typeing3]

Cold pool in the north and interior... going

[Rubus_Leucodermis]

That +19 departure in Rock Springs, WY.