December 2025 Forecasts and Discussions

[Catnip]

Honestly, the mountains have the priority.

Ya, hopefully the COF pattern materializes! Snow would start to pile up at elevation.

[AbbyJr]

The GFS is back to its ridiculous snowfall output.

gfs-deterministic-vancouverski-total_snow_kuchera_cm-6102400.png

gfs-deterministic-vancouverski-snow_depth_cm-6102400.png

[Bonovox]

Haha and just like that the 00z Euro doesn’t have the ridge merger in that critical day 7-8 time frame and the westerlies breakthrough. Might be an outlier though.

[Bonovox]

00z AI Euro gets there though.

[AbbyJr]

00z AI Euro gets there though.

Michael Snyder said that the Euro AI has been the best performing model as of recent. So we'll see if it leads the way here.

[Catnip]

Pretty noisy extended… especially that orange Nito one…

IMG_0064.png

[Hawk]

Always potential for snow in Dec in the LR. GFS always has some snow maps in every run. The maps are always nice to look at for sure
Meantime, it looks like a major Nito festival over the next week+
Abby with rain and H8-9c and L 4-5c. Yay

[wetcoast91]

Always potential for snow in Dec in the LR. GFS always has some snow maps in every run. The maps are always nice to look at for sure
Meantime, it looks like a major Nito festival over the next week+
Abby with rain and H8-9c and L 4-5c. Yay

Looks like the models want to carry the energy into the Pacific which means potential for a mild SW flow! Could also lead to storm development.

[Bonovox]

Looks like the models want to carry the energy into the Pacific which means potential for a mild SW flow! Could also lead to storm development.

I wouldn’t call this mild, but you are right, there is a chance it digs too far west.

[wetcoast91]

I wouldn’t call this mild, but you are right, there is a chance it digs too far west.

I trust the Euro which shows a torch leading to a pattern.

[Canada Goose]

[Bonovox]

I trust the Euro which shows a torch leading to a pattern.

Fair, but here is the 12z AI Euro for the same time frame.

Long story short, lots to unpack still.

[HarrisonSasquatchWx]

I trust the Euro which shows a torch leading to a pattern.

It's currently 5c @ the lake in Harrison with showers.

[Bonovox]

More importantly, 12z EPS was a decent run.

[Typeing3]

Fair, but here is the 12z AI Euro for the same time frame.

Long story short, lots to unpack still.

There's that north/interior cold pool sign again. W/NW flow for us down here which translates to lowland rain and lots of mountain snow.