December 2025 Forecasts and Discussions

[Typeing3]

12z GFS ensembles:

ens_image (3).png

00z ECMWF ensembles:

ens_image (4).png

12z GEM ensembles:

ens_image (5).png

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20251212190804-6b914a96c224686b35ad2f88e635ffa29a416d83.png

20251212190751-1cce3a2bc8e3eb9e8f537312fad49ba93bb6daae.png

[Catnip]

Better!

814temp.conus.png

[Hawk]

The EPS carries that trough out to sea. Constant showers with slightly below seasonal temps. Still loads of snow above 1000m but that effectively kills any lowland snow chances in the LR.

Lets be honest now..the models are struggling(as usual) past day 5 or 6.
King GFS with the mid-long range trends lately for sure tho

[stuffradio]

Yeah it's not happening. Too bad so sad. Canucks season will mirror this winter won't it...

OR it will mirror the Whitecaps and it will look like it will happen, but at the end of the day we will end up just short of the championship snowstorms.

[Michael1]

OR it will mirror the Whitecaps and it will look like it will happen, but at the end of the day we will end up just short of the championship snowstorms.

At this point, I'd be happy with heavy frost

[wetcoast91]

Lost in all this is the prospect of a very wet week after tomorrow with potential instability and heavy rains. 200-500mm by next Sunday. It will probably compound flood relief.

[Catnip]

Lost in all this is the prospect of a very wet week after tomorrow with potential instability and heavy rains. 200-500mm by next Sunday. It will probably compound flood relief.

[Hawk]

on a more positive note, the 18z GFS is running now

[stuffradio]

on a more positive note, the 18z GFS is running now

Better catch it!

[PortKells]

on a more positive note, the 18z GFS is running now

Even if it’s great I’m not buying it when every other model looks mediocre at best. We know the gfs has an amplified bias for our region.

[Catnip]

I could be wrong but this could be going somewhere....

gfs-500h_anom-na-2025121218-177.png

[AbbyJr]

Lost in all this is the prospect of a very wet week after tomorrow with potential instability and heavy rains. 200-500mm by next Sunday. It will probably compound flood relief.

Thankfully, it's not modelled to fall all at once but still looks like a very wet week ahead.

ecmwf-deterministic-vancouverski-total_precip_mm-6340000.png

gem-all-vancouverski-total_precip_mm-6340000.png

[Catnip]

Ummm.....

gfs-500h_anom-na-2025121218-207.png

[Catnip]

-14 850s

gfs-850th-us_nw-2025121218-237.png

[Catnip]

You could tell fairly early on that this was going to be a good run.