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OBS for NYC CP first measurable minor snowfall? 11A Fri 12/20-11A 12/21, embedded with surrounding area periodic minor accumulative snow

wdrag

By wdrag,
in New York City Metro

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Stormlover74

Stormlover74

Posted
Posted

1053 PM EST Fri Dec 20 2024

NJZ004-006-103>108-211000-

Eastern Passaic-Hudson-Western Bergen-Eastern Bergen-Western Essex-Eastern Essex-Western Union-Eastern Union-

1053 PM EST Fri Dec 20 2024

Light snow will continue across the area into Saturday morning, with an additional 1 to 2 inches of snow accumulation. Untreated roadways will be snow covered and hazardous tonight into Saturday morning. Motorists are urged to slow down and use caution traveling tonight into Saturday morning.

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donsutherland1
donsutherland1

Four photos from a wonderful way to start the winter solstice. As @MJO812 has noted, all snow is good snow.

wdrag
wdrag

No guarantees on what will happen. Modeling showa a pair of closely following short waves diving southeast toward the mid Atlantic coast, sharpening the mid level trough.  While too far offshore for a

Nibor
Nibor

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MJO812

MJO812

Posted
Posted

```
Special Weather Statement
National Weather Service New York NY
1053 PM EST Fri Dec 20 2024

NYZ072>075-176-178-211000-
New York (Manhattan)-Bronx-Richmond (Staten Island)-
Kings (Brooklyn)-Northern Queens-Southern Queens-
1053 PM EST Fri Dec 20 2024

Light snow will become steadier overnight and continue into
Saturday morning, with 1/2 to locally 1 inch of snow accumulation.
Much of this accumulation will be on elevated surfaces and on
vegetation, but untreated roadways may become snow covered in
spots late tonight into Saturday morning. Motorists are urged to
slow down and use caution traveling tonight into Saturday morning.
```

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donsutherland1

donsutherland1

Posted
Posted

Also: 

Special Weather Statement
National Weather Service New York NY
1053 PM EST Fri Dec 20 2024

CTZ005-009-NYZ070-071-211000-
Northern Fairfield-Southern Fairfield-Northern Westchester-
Southern Westchester-
1053 PM EST Fri Dec 20 2024

Light snow will develop after midnight and continue into Saturday
morning, with 1/2 to 1 inch of snow accumulation. Untreated
roadways will be snow covered and hazardous tonight into Saturday
morning. Motorists are urged to slow down and use caution
traveling tonight into Saturday morning.

$$
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IrishRob17

IrishRob17

Posted
Posted 
Special Weather Statement
National Weather Service New York NY
1053 PM EST Fri Dec 20 2024

NJZ002-NYZ067>069-211000-
Western Passaic-Orange-Putnam-Rockland-
1053 PM EST Fri Dec 20 2024

Light snow will continue across the area into early Saturday
morning, with an additional 2 to locally 3 inches of snow
accumulation. The highest accumulations expected for elevations
above 500 ft. Untreated roadways will be snow covered and
hazardous tonight into Saturday morning. Motorists are urged to
slow down and use caution traveling tonight into Saturday morning.

$$
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rclab

rclab

Posted
Posted
3 hours ago, donsutherland1 said:

Also: 

Special Weather Statement
National Weather Service New York NY
1053 PM EST Fri Dec 20 2024

CTZ005-009-NYZ070-071-211000-
Northern Fairfield-Southern Fairfield-Northern Westchester-
Southern Westchester-
1053 PM EST Fri Dec 20 2024

Light snow will develop after midnight and continue into Saturday
morning, with 1/2 to 1 inch of snow accumulation. Untreated
roadways will be snow covered and hazardous tonight into Saturday
morning. Motorists are urged to slow down and use caution
traveling tonight into Saturday morning.

$$

Finally snowflakes on Tompkins Place. Worth the wait. Stay well, as always ….

 

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RU848789

RU848789

Posted
Posted
1 hour ago, RU848789 said:

And another 3/8" this past hour giving up 3/4" so far.  Should definitely make my 1.25" prediction and will hopefully get to 2" if the models are correct.  Light to moderate snow continues at 33F, just warm enough to have minimal accumulations on paved surfaces, but it's forecast to drop to 32F by midnight for most of CNJ, with some more snow to come, so secondary/untreated roads and sidewalks/driveways could get slippery (but no major driving impacts expected outside of areas that get 3" or more well NW of 95).  

Less intensity the last hour, so as of 11:30 pm we're now at about 0.9" with the temp finally down to 32F, so we should start seeing some accumulation on paved surfaces.  Latest HRRR still showing another 1-2" overnight for most of CNJ/NNJ/NYC, so 2" is easily within reach here and for most, with some areas in the Lehigh Valley, NWNJ, Bucks, Montco, the Poconos, etc. already having reached 2"+.  

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RU848789

RU848789

Posted
Posted
51 minutes ago, RU848789 said:

Less intensity the last hour, so as of 11:30 pm we're now at about 0.9" with the temp finally down to 32F, so we should start seeing some accumulation on paved surfaces.  Latest HRRR still showing another 1-2" overnight for most of CNJ/NNJ/NYC, so 2" is easily within reach here and for most, with some areas in the Lehigh Valley, NWNJ, Bucks, Montco, the Poconos, etc. already having reached 2"+.  

So, as of 12:30 am, we're up to 1.1" with 0.2" falling the past hour; temp still at 32F and with wet paved surfaces, it'll still take more intensity (to overcome the melting from liquid water probably at about 33F) or a drop to 31F to get some accumulation on paved surfaces. 

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RU848789

RU848789

Posted
Posted
1 minute ago, jm1220 said:

Boston up to 5.2". Philly airport has 0.1" but I think the north side of town had 1-2". E PA north of Philly has 2-4". Trenton has 2.3". 

I asked in the Philly thread and 3 hours ago there was 1/2-1" in NW parts of the city, but less near center city and the airport, which is the warmest spot in Philly; the PNS lists 1.5" in Bustleton in the far NE of the city and a friend in CC has about 1".  Another poster in my hometown of Turnersville about 10 miles SSE of CC reported 1.4".  Lots of 1.5-3" amounts in Sussex/Warren/Morris/Hunterdon/Somerset.  

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RU848789

RU848789

Posted
Posted
1 hour ago, RU848789 said:

So, as of 12:30 am, we're up to 1.1" with 0.2" falling the past hour; temp still at 32F and with wet paved surfaces, it'll still take more intensity (to overcome the melting from liquid water probably at about 33F) or a drop to 31F to get some accumulation on paved surfaces. 

Best hour of the storm with 0.3" bringing us to 1.4" as of 1:30 am and with temps steady at 32F, we're finally seeing some accumulation on paved surfaces (just a coating so far, but assuming we get another 1/2"-1", much of that should end up on the paved surfaces now (once the snow has a foothold, subsequent snow falls on 32F snow, not slightly warmer cement, and accumulates readily).

Nap time for the next ~3 hours; hopefully the HRRR/RAP hi-res models, which have been doing well continue to do so, as they show another 1" for much of CNJ and 1"+ for all of NENJ/NYC from now through 7-8 am.
 

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