December 2020 Observations and Discussion

Rain sleet snowflakes and even some of that grapple stuff all at the same time. Yet radar still says all snow...Very interesting. Is that due to high dew point? Or that the higher temps are much closer to the surface? Or is that kind of the same thing?

I'll try answering my own question. If you look ahead another few hours, we see that while the 540 line appears well to my south (woo hoo!), all of the low level air is flowing N/NE from the warmer gulf states (boo!). None of that cold air from the last storm is sticking around. And so, we get Pooville!! And I think my mixed bag of precip at present represents that transition from colder surface air temps to warmer as that precip and wind direction continue moving north. I think...

WE HAVE SNOW AT 32* here in Hillsdale!!!!

sroc4 wrote:Ripping out by me!!

Almost like a painting!

What a radar

http://sirocco.accuweather.com/nxssa_r1_h_500x620d/r1h/inxr1Kphla_h.gif

Happening now... pic.twitter.com/5fu0zta7yr

— Robert LaRoche (@PWMwxME) December 20, 2020

SENJsnowman wrote:I'll try answering my own question. If you look ahead another few hours, we see that while the 540 line appears well to my south (woo hoo!), all of the low level air is flowing N/NE from the warmer gulf states (boo!). None of that cold air from the last storm is sticking around. And so, we get Pooville!! And I think my mixed bag of precip at present represents that transition from colder surface air temps to warmer as that precip and wind direction continue moving north. I think...

Meant to comment on this. It made me chuckle. Also, nice analysis and thanks for sharing. I did not see a flake today. But looks like some of you did

Also, congrats on the new tag!

Had some mood flakes today

We had snow late this morning..mood flakes

Above freezing temperatures right up to James Bay in late December.  That's pretty amazing.

Merry Christmas all!

You won't find many times these temperatures (low 50's) coupled with a dearth of snow cover in Aroostook County Maine on Christmas Day!  This is unreal.  Temperatures reached 40 in Labrador City, CA.

Merry Christmas ...wow we were at 63* after midnight last night currently 38* and we dropped 7* in the last hour alone......cloudy just a pj kind of day..everyone enjoy and stay safe!!

A brisk 23 degrees this morning. Yes, the temp drop was rapid. Heat is back on.

And at sunrise, a surprise dusting of snow covering the grass, deck, etc. Driveway and road are uncovered. I just saw it from my kitchen window when I went to watch the birds at the feeders.

23* for my low here. Had some mood flakes last night driving home from Yorktown NY.
Merry Xmas everyone and hope you all had a great day!

A dusting of snow this morning. Pleasant surprise. 31 degrees currently.

Up herenin Franklin NY and heavy snow have about 1" OTG at 27*

Mood flakes in Bayville. Oh wait, I hear a rapping on the windows...
Wintry mix here in Bayville.

Edit: Back to flakes!! I could tell when the cheers rang out!!

Actually woke up to a dusting of snow this morning.

Models are beginning to sniff out the low level cold and are showing an increasing threat of freezing rain N&W of NYC on New Years Day afternoon into evening. A 1030mb HP to the north will keep enough cold air in place for precipitation to start out as snow/ice before changing to rain.



Although the GFS looks aggressive in comparison to the NAM, I actually think it's on the right track. As we get even closer, I can see both models showing higher amounts of freezing rain for some locations. I think I-95 and points S&E are fine and will see mostly plain rain.

GFS freezing rain:



NAM freezing rain:

GEFS some ice signal