December 2019 Forecasts and Discussions

[Catnip]

Not much showing up on the GFS, low pressure wise, but that sure looks like a windstorm pattern. Still watching around Thursday

18D9DC46-1595-4A92-91B3-FAA609E304E3.png

Gem:

gem_mslp_pcpn_frzn_nwus_15.png

[Catnip]

500mb.png

850temp.png

[Monty]

Gem:

gem_mslp_pcpn_frzn_nwus_15.png

965mb. Probably overdone. But certainly a pattern where I would expect some type of low pressure development

[wetcoast91]

965mb. Probably overdone. But certainly a pattern where I would expect some type of low pressure development

I would be worried about the firehose shifting further north if we see any rapid cyclogenesis in the models. Mount Washington gets burried.

500mb shows decent progression although fuzzy on any jet consolidation once we see amplification. 850mb temps appear to show weak splitting. Dry and cold?

[Catnip]

Snow at SFU

A1230858-6829-4289-814E-06D399EE8E0F.jpeg

[Canada Goose]

Moderate snow on the North Shore mountains.

Grouse.jpg

[Monty]

I would be worried about the firehose shifting further north if we see any rapid cyclogenesis in the models. Mount Washington gets burried.

500mb shows decent progression although fuzzy on any jet consolidation once we see amplification. 850mb temps appear to show weak splitting. Dry and cold?

Mt Washington needs it. Just a 25cm base there.

Too soon to say anything with certainty, but this has felt like a season that may feature some extended dry cold snaps.

[wetcoast91]

E Winds picked up. Precip changed to wet snow in Fraser Heights. Precip looks to cut off soon though.

[Hawk]

How much snow could Mt Wash get Nito? If the firehose heads north?

[wetcoast91]

How much snow could Mt Wash get Nito? If the firehose heads north?

50-100cm as it stands. Too far north? Maybe negative amounts since it will be all rain.

Looks like a really mild storm along the entire coast. You usually see a pocket of cold air with heavy snow on the NE of these things but there is no source or cold air in the region to tap into.

[Canada Goose]

[wetcoast91]

.

Signals are there for a potential snowy cold pattern. Little bit too much energy behind the NPAC ridge. Kona low a bit weak too but pattern evolution showing potential in the 7-10 day period.

[Abby_wx]

https://pbs.twimg.com/media/EL7RZhjWsAA-eah.jpg:large

Awfully random choice of date ranges...

Looks like 1965-1984 was a particularly bad period for White Christmases on the south coast. Who knew, or who would even think to check such a random span of time.

[stuffradio]

2019121612_054@007_E1_north@america_I_NAEFS@TEMPERATURE_anomaly@probability@combined@week2_186.png

[Canada Goose]