December 2023 Forecasts and Discussions

[Pomoman]

Doubt I’d get 15 on the ground but fun to watch it fall if true.

[Typeing3]

00z GFS ensembles:

ens_image (4).png

00z ECMWF ensembles:

ens_image (5).png

00z GEM ensembles:

ens_image (6).png

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20231208143740-3789acde1e0cee01b0f0fd1ad2977731fe2a967e.png

20231208143715-50b460d5129074be67f1063c821420fc8c6b6cc6.png

[Hawk]

EC is on board with up to 4cms at "Higher elevations".
So vague..but looks like Catnip Hill will be all white

[SouthSardiswx]

Got some hail this morning falling @ the pond in south Sardis and 5c.

[Nordelian]

EC is on board with up to 4cms at "Higher elevations".
So vague..but looks like Catnip Hill will be all white

They are more specific in the alert, which essentially says areas above ~300 m elevation

[Nordelian]

Got some hail this morning falling @ the pond in south Sardis and 5c.

You mean graupel

[SouthSardiswx]

You mean graupel

Yes Nords l thought of that for accurate terminology.

[Rubus_Leucodermis]

They are more specific in the alert, which essentially says areas above ~300 m elevation

Actually the only mention of any specific elevation is where it explicitly states that “wet snow may reach sea level.”

Overall, it is very close to what I have been saying for the last day or so.

SPECIAL WEATHER STATEMENT

5:18 AM PST Friday 8 December 2023

Snow with 2 to 4 cm of accumulation over higher terrain is possible.

When: Saturday afternoon.

Where: Metro Vancouver.

Remarks: On Saturday, a frontal system will move onto the South Coast. Rain will begin Saturday morning and become mixed with snow Saturday afternoon. Wet snow may reach sea level but, generally, no significant accumulation is expected for most areas. Accumulations of 2 to 4 cm are possible over higher elevations of Metro Vancouver, such as the North Shore, Coquitlam, and Burnaby Mountain.

Strong warming is expected Saturday evening and any snow will transition back to rain as freezing levels rise to near 2000 metres.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to BCstorm@ec.gc.ca or tweet reports using #BCStorm.

[Catnip]

6z Euro

I think the banana belt is clearly shown here?

euro.png

[SouthSardiswx]

Actually the only mention of any specific elevation is where it explicitly states that “wet snow may reach sea level.”

Overall, is is very close to what I have been saying for the last day or so.

Who wrote the part about strong warming El Neetzy.

[wetcoast91]

6z Euro

I think the banana belt is clearly shown here?



euro.png

Right over T3

[Rubus_Leucodermis]

Kuchera snowfall maps:

ecmwf-deterministic-vancouverski-total_snow_kuchera_cm-2209600.png

gfs-deterministic-vancouverski-total_snow_kuchera_cm-2209600.png

[Rubus_Leucodermis]

And just for completeness, the GEM.

gem-all-vancouverski-snow_24hr_kuchera_cm-2209600.png

[Rubus_Leucodermis]

Short-term models:

hrrr-vancouverski-snow_24hr_kuchera_cm-2209600.png

nam-nest-vancouverski-snow_24hr_kuchera_cm-2209600.png

hrdps-vancouverski-snow_24hr_kuchera_cm-2209600.png

[VanCitySouth]

And just for completeness, the GEM.

gem-all-vancouverski-snow_24hr_kuchera_cm-2209600.png

Trust this to be the one time the GEM nails it for showing basically nothing except for terrain bleed