December 2025 OBS and Discussion

[MJO812]

[cleetussnow]

8 hours ago, Brian5671 said:

Not sure why cold matters on xmas-it's an indoor holiday.    Whether it's 12 or 56 you're sitting inside

What?  I don’t know where to start with this.

[jm1220]

23 minutes ago, MJO812 said:

Regular GFS squishes it like a bug, congrats-ish DC to Cape May. Didn’t even know there was an AI GFS.

[eduggs]

Far NW suburbs still on track for a possible C-2" tomorrow. Unlike last week which was more of a latitudinal gradient, this potential wintry event has a stronger elevational component.

I could see the top of Schunnemunk or Mt. Beacon getting an inch or two of snow while the Hudson River towns get zilch. Elevated NW NJ could get a little accumulation this time too.

[anthonymm]

Threat for Sunday looks impotent

[MJO812]

29 minutes ago, jm1220 said:

Regular GFS squishes it like a bug, congrats-ish DC to Cape May. Didn’t even know there was an AI GFS.

There is also a cmc para. AI is taking over everything. 

[eduggs]

Sunday isn't lost yet. The next day or so will likely resolve whether or not this is a potential wintry threat. The ICON, ECM-AI, GFS-AI, and GEFS support a possible snowstorm. The other guidance (UK, ECM, CMC, GEPS, EPS) aren't too far off.