December 2025 Forecasts and Discussions

[Typeing3]

EPS looks decent as well.



IMG_0334.jpeg

Pretty strong signal despite being in the 10-15 day range. Very classic Nina looking. Hell of a lot better than what we're seeing now of course.

That brutally cold air in Yukon and NWT will be reloading over and over again over the next couple weeks. Having that as a (relatively) nearby source if the 500mb pattern cooperates down the line is good to see at this point.

[Typeing3]

Cold patterns have produced big low elevation snowfalls in the past. January 1954 is an extreme example. A deeply entrenched arctic airmass over the south coast met up with a low that stalled offshore for a week. Abbotsford recorded over 100cm with multiple back to back snowstorms.

January 1954 is another example of a stable pattern, caused by a Rex Block. The reanalysis image (from January 1954) and an example image below:

1954011512.gif

rex_block-1.png

[AbbyJr]

Source: https://forecast.weather.gov/showsigwx. ... n=-122.265

Flood Warning...CORRECTED
National Weather Service Seattle WA
1023 PM PST Tue Dec 9 2025

...The National Weather Service in Seattle WA has issued a Flood
Warning for the following rivers in Washington...

South Fork Nooksack River At Saxon Bridge affecting Whatcom
County.

Nooksack River At North Cedarville affecting Whatcom County.

.Phase 2 of this storm event has begun with moderate to heavy rain
expected. This will drive up the Nooksack higher than yesterday, up
to moderate flood category. This amount of flow in the mainstem
Nooksack could lead to an Everson overflow flood event that would
also impact Nooksack, Sumas, into Abbotsford BC Canada.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Motorists should not attempt to drive around barricades or drive
cars through flooded areas.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Additional information is available at www.weather.gov.

The next statement will be issued by Wednesday morning at 630 AM PST.

&&

WAC073-101430-
/O.COR.KSEW.FL.W.0047.251210T2028Z-251212T0306Z/
/NRKW1.2.ER.251210T2028Z.251211T0600Z.251211T1805Z.NO/
1023 PM PST Tue Dec 9 2025

...FLOOD WARNING IN EFFECT FROM WEDNESDAY AFTERNOON TO THURSDAY
EVENING...

* WHAT...Moderate flooding is forecast.

* WHERE...Nooksack River at North Cedarville.

* WHEN...From Wednesday afternoon to Thursday evening.

* IMPACTS...At 148.0 feet, the Nooksack River will cause widespread
flooding downstream through Lynden...with swift waters covering
some farm lands and roads. Erosion may affect some river banks.

* ADDITIONAL DETAILS...
- At 9:15 PM PST Tuesday the stage was 141.8 feet.
- Flood stage is 146.5 feet.
- Forecast...The river is expected to rise above flood stage
early tomorrow afternoon to a crest of 148.4 feet late
tomorrow evening. It will then fall below flood stage late
Thursday morning.
- Flood History...This crest compares to a previous crest of
148.1 feet on 12/13/2010.
- http://www.weather.gov/safety/flood

[Bc_trucker]

Source: https://forecast.weather.gov/showsigwx. ... n=-122.265

Well I'm on the way back from Seattle I hope I can get home LOL

[Weather101]

That's when I'm back. Maybe I'm bringing the snow and cold back with me? The clipper today is packing a punch in Toronto snow wise, and it's been non-stop cold. Hopefully, I bring it back home

[Hawk]

Pretty strong signal despite being in the 10-15 day range. Very classic Nina looking. Hell of a lot better than what we're seeing now of course.

That brutally cold air in Yukon and NWT will be reloading over and over again over the next couple weeks. Having that as a (relatively) nearby source if the 500mb pattern cooperates down the line is good to see at this point.

This is "brutally cold weather" in the West in December..except its hung up North, sadly.
Yay

[Hawk]

EC update for Abby for the next 6 days:
Rain with H9-12c and L 5-9c

[Hawk]

Similks is just taking a ferocious beating too. Showers over the same span with H5-7c and L 0-5c. Just brutal.
Normals are: Max-2°C. Min-9°C.

[John]

Rain is definitely here with a vengeance!

[Hawk]

06z gfs update:
Cooler and showery precip in the long term...not much snow, sorry butt lickerees. Short and mid is rain and a cupla more AR's.
Onto the 12z!

[Hawk]

lots of "Level Orange" warnings for rainfall this morning. It will be nice when we get "Red Warnings" for snowfall..like back in the 80's and 90's on TV

[John]

Skagit river is said to flood to a new historic level

[Canada Goose]

EC update for Abby tonight:
Low of 11c

Always trust in EC...

Capture d’écran 2025-12-10 à 06.58.01.jpg

[John]

Always trust in EC...


Capture d’écran 2025-12-10 à 06.58.01.jpg

11° temperatures are only 5 miles south in Ferndale impossible to get that exactly right

[Canada Goose]

11° temperatures are only 5 miles south in Ferndale impossible to get that exactly right

Come on... And that was supposedly the expected low. Total failure, as usual.

Capture d’écran 2025-12-10 à 07.26.03.jpg

Otherwise, -52.6°C in Braeburn, YT.