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

[wdrag]

Wantage-this southern lower part.. 0.5" 29F 

[RU848789]

NWS updated their snowfall map for the region, extending the 1-2" swath through all of CNJ and NENJ and into NYC, with 2-3" still forecast along/N of 78 (and NW of 287), as the interaction between the clipper from the west and the bombing low well off the DelMarVa is expected to give most of us (except probably NYC eastward) a little bit more precip from this evening through about sunrise, with most of that being snow as temps drop to around 32F for folks along/near 95 by late evening, allowing accumulations, probably even on untreated roads in most locations.

And Lee Goldberg also expanded his 1-3" swath to include all of CNJ (mostly 1-2" really), except areas east of the Parkway in Monmouth/Ocean and east of the NJTPK from about Carteret to the GWB, where he has about 1" or so and less for NYC/LI (due to less precip). Not a major snowstorm, but people should certainly be careful on the roads tonight and tomorrow morning, should we get forecasted snowfall amounts.  

Stiil snowing mostly lightly here with no more accumulation (maybe 0.1" so far), as temps are still 34F, but the sun is setting, so temps should drop towards 32F for the 95 corridor by 9-11 pm, allowing any snow to fall to accumulate after that, whereas accumulation will be more intensity dependent from now until then (and with light intensity, probably not much accumulation along/near 95 and SE of there until mid/late-evening).  Would love to get at least 1" just because and an overperforming 2" would be amazing and possibly enough to last through Christmas Eve given how cold it will be until then.  

[winterwarlock]

not impressed 

[Cyg]

Glorified dusting here

[steve392]

So how we measuring accumulation??  Streets there's nothing.  Picnic table behind our center there's about 1/2 an inch of snow.

[MANDA]

Steady light snow here.  Down to 27.  Once we got past 4:00 it almost immediately started to stick on my not well traveled street.  Street was just wet all day, except along the edges.  Looks pretty outside especially taking into account the holiday season.

Will take a measurement at 6pm.

[Stormlover74]

33 with decent steady snow but not sticking yet

[Allsnow]

7 minutes ago, Stormlover74 said:

33 with decent steady snow but not sticking yet

Same…

 

this is like a March event 

[wxman]

Everything but paved surfaces covered.  .2-.3 on the picnic table.  31.3

[Stormlover74]

9 minutes ago, Allsnow said:

Same…

 

this is like a March event 

Sounds like Bucks and Hunterdon are doing well

Hrrr ends the snow in few hours before redevelopment around midnight

[Poker2015]

Snowing pretty good now. Even the edge of Rt 22 is getting white

[RU848789]

22 minutes ago, steve392 said:

So how we measuring accumulation??  Streets there's nothing.  Picnic table behind our center there's about 1/2 an inch of snow.

Never measure on paved surfaces as they often retain too much heat and have some melting.  That's why NOAA recommends a white snowboard (to minimize board heatup and melting from insolation) placed on the ground, away from obstructions, but if you don't have that, any colder surface will do (cartop, deck, or even grass, although grass can inflate amounts especially if the snow is fluffy).  And one isn't supposed to measure more than 4X per 24 hours, but one should, if possible, measure after a precip change from snow to rain, before compaction/melting (also sleet counts, but again, clearing the board after a change from snow to sleet is ok and the two amounts are added; freezing rain should not be counted).  

https://theconversation.com/how-is-snowfall-measured-a-meteorologist-explains-how-volunteers-tally-up-winter-storms-175628

[TJW014]

White rain/drizzle. 35.

[RU848789]

11 minutes ago, Allsnow said:

Same…

 

this is like a March event 

just starting to accumulate a little bit on the colder surfaces here (on the car and the deck chairs, but not the deck yet).  With the temp down to 33F and at least steady light snow, I think we'll start accumulating on all but paved surfaces soon.  

[Allsnow]

14 minutes ago, Stormlover74 said:

Sounds like Bucks and Hunterdon are doing well

Hrrr ends the snow in few hours before redevelopment around midnight

Very festive either way…

 

 

[qg_omega]

Mega bust unless something happens tonight 

[IrishRob17]

1.2" on the snow board with light snow, 30/27. 

[psv88]

35 and light snow in Suffolk. 

[BxEngine]

5 minutes ago, qg_omega said:

Mega bust unless something happens tonight 

Yeah man 1/2” instead of the predicted 3/4” inch is a huge bust.

 

oh wait nevermind, over 1/2” now. Bust cancelled.

[MANDA]

Currently 27 and steady light snow ongoing.  Total 1.2".

[Stormlover74]

4 minutes ago, BxEngine said:

Yeah man 1/2” instead of the predicted 3/4” inch is a huge bust.

 

oh wait nevermind, over 1/2” now. Bust cancelled.

Right up there with March 2001

[Rjay]

8 hours ago, Bxstormwatcher360 said:

Im just waiting on banding over nyc which is incoming. Some places are gonna rip later on esp along the coast.

It's about to pivot right over you

[qg_omega]

6 minutes ago, BxEngine said:

Yeah man 1/2” instead of the predicted 3/4” inch is a huge bust.

 

oh wait nevermind, over 1/2” now. Bust cancelled.

Zero vs 1 to 2 but OK 

[winterwx21]

Just a dusting on colder surfaces here, but overnight was always supposed to be when we get most of our accumulation. We should get over an inch. 

[Allsnow]

2 minutes ago, Rjay said:

It's about to pivot right over you

You want to smell the dry slot 

[Stormlover74]

2 minutes ago, winterwx21 said:

Just a dusting on colder surfaces here, but overnight was always supposed to be when we get most of our accumulation. We should get over an inch. 

Yeah 12 to 6am hopefully 

[RU848789]

16 minutes ago, BxEngine said:

Yeah man 1/2” instead of the predicted 3/4” inch is a huge bust.

 

oh wait nevermind, over 1/2” now. Bust cancelled.

There's a reason he's 5-posted, I guess, lol.  When the forecast is for about 1" and the uncertainty on that forecast is probably about +/-1", then one should expect 0-2", so 1/2" would be well within expectations.  Funny how nobody says boo when there's a rain forecast for 0.1" and one only gets 0.05" - nobody freakin' notices.  

[MJO812]

Boring so far

[sussexcountyobs]

18 minutes ago, qg_omega said:

Zero vs 1 to 2 but OK 

Is the snow over? I didn't realize that was it for tonight?

[steve392]

52 minutes ago, RU848789 said:

Never measure on paved surfaces as they often retain too much heat and have some melting.  That's why NOAA recommends a white snowboard (to minimize board heatup and melting from insolation) placed on the ground, away from obstructions, but if you don't have that, any colder surface will do (cartop, deck, or even grass, although grass can inflate amounts especially if the snow is fluffy).  And one isn't supposed to measure more than 4X per 24 hours, but one should, if possible, measure after a precip change from snow to rain, before compaction/melting (also sleet counts, but again, clearing the board after a change from snow to sleet is ok and the two amounts are added; freezing rain should not be counted).  

https://theconversation.com/how-is-snowfall-measured-a-meteorologist-explains-how-volunteers-tally-up-winter-storms-175628

Awesome info, thank you!!  Will check the picnic table once I log out of work.  Snow has tapered off in Mahwah.