December 2025 Forecasts and Discussions

[Bonovox]

All of the ensembles keep showing plentiful high latitude blocking, but always a bit too far west. I guess that's going to be our battle this winter. There's always something. I'll be curious to know what they show by Wednesday/Thursday runs. We kinda want the pieces up stream to start coming together the week of the 15th to set us up for Christmas.

[tyweather]

The pressure difference shown on the GFS over Greenland is pretty crazy.

[AbbyJr]

Very wet day possible on Wednesday as the AR lifts north.

Wednesday 12:00AM to 12:00AM Thursday:

IMG_0091.png

[stuffradio]

It's pretty rainy today in Chilliwack.

[Canada Goose]

14.6°C Victoria YYJ
13.2°C Abbotsford
12.6°C Vancouver YVR

[Canada Goose]

[stuffradio]

#BeginningofJan

[wetcoast91]

All of the ensembles keep showing plentiful high latitude blocking, but always a bit too far west. I guess that's going to be our battle this winter. There's always something. I'll be curious to know what they show by Wednesday/Thursday runs. We kinda want the pieces up stream to start coming together the week of the 15th to set us up for Christmas.

Put it this way...The climate is seriously screwed if we are seeing endless AR's for 3-4 weeks. Odds are we see dry weather in week 3 or 4. Drier with fake cold or drier with arctic cold?

[Canada Goose]

Put it this way...The climate is seriously screwed if we are seeing endless AR's for 3-4 weeks. Odds are we see dry weather in week 3 or 4. Drier with fake cold or drier with arctic cold?

I would just like to point out that we are not (yet) experiencing a very rainy December.

Rainfall since Dec. 1:

99.0 mm Coquitlam-Burke Mountain (monthly normal [2014-2024]: 375.1 mm)
55.4 mm Abbotsford (monthly normal: 179.8 mm)
46.8 mm Vancouver YVR (monthly normal: 158.3 mm)

So that's totally NORMAL so far.

Many seem to forget that December is the 2nd wettest month of the year and that the averages are very high.

[Hawk]

Put it this way...The climate is seriously screwed if we are seeing endless AR's for 3-4 weeks. Odds are we see dry weather in week 3 or 4. Drier with fake cold or drier with arctic cold?

could be really bad timing for a #patternlock

[Hawk]

I would just like to point out that we are not (yet) experiencing a very rainy December.

Rainfall since Dec. 1:

99.0 mm Coquitlam-Burke Mountain (monthly normal [2014-2024]: 375.1 mm)
55.4 mm Abbotsford (monthly normal: 179.8 mm)
46.8 mm Vancouver YVR (monthly normal: 158.3 mm)

So that's totally NORMAL so far.

Many seem to forget that December is the 2nd wettest month of the year and that the averages are very high.

Yes but 374 mm "normal" is a eeeeuge amount of precip. The Similks gets that in one year. Don't move there i guess if you love lots of rain

[Hawk]

whoa, 18z gfs continues the trend with yet another AR ~Dec 23 after a brief slushfestival the day before
ughhh

[Canada Goose]

Yes but 374 mm "normal" is a eeeeuge amount of precip. The Similks gets that in one year. Don't move there i guess if you love lots of rain

Of course, but if the normal is 350 mm, a "wet" month of 250 mm would be well below normal.

If 5 mm of rain falls in Iquique, Chile, that represents six years' worth of rainfall.

It's always important to talk in terms of relative to the average.

[Typeing3]

Put it this way...The climate is seriously screwed if we are seeing endless AR's for 3-4 weeks. Odds are we see dry weather in week 3 or 4. Drier with fake cold or drier with arctic cold?

Quite rare but it can happen on occasion. For example, this is the 100th anniversary of one such December.

December 1925 (New Westminster): https://climate.weather.gc.ca/climate_d ... estminster

December 1925 (Downtown Vancouver): https://climate.weather.gc.ca/climate_d ... pe=navLink

[Hawk]

Pacific Ocean ssta are just torching rn. Compared to Nov 1985 below:

https://www.ospo.noaa.gov/data/sst/mean ... nomaly.gif

Makes sense