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Mt Holly

As colder air wraps in on the back side, expect rain to change to snow across the 
higher elevations and perhaps even a little mixing at lower elevations. Temperatures look
marginally cold at the surface, however elevations above 1500 feet could pick up a decent 
amount of snow in Pocono region (Pocono plateau in particular). As of now, 1-4 inches of 
snow is forecast Thursday night into Friday for the Poconos, however depending on the
track of the low and the wraparound moisture, amounts could be higher. Some of this could 
get more into the higher elevations of far northwestern New Jersey. Some snow may develop 
a little farther south and east, however accumulations should drop of to little or
nothing. Overall, a tricky forecast as there are several moving parts.

 

upton

 

Colder air will move in Thursday night as the sfc low occludes and
moves up into SW New England and the lower Hudson Valley, and the
upper low moves overhead. This will introduce potential for wet snow
across the Lower Hudson Valley and far interior NE NJ Thu night
into Fri AM, especially in the higher elevations. The timing and
location of this process will ultimately determine the extent of the
colder air and where the most organized forcing sets up.
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16 minutes ago, brooklynwx99 said:

RGEM is advertising a highly anomalous ~522dm ULL E of LI... would bring heavy snow to NNJ verbatim even with marginal surface temps

this is about as dynamic of a setup as you'll see regardless of the time of year

 

Yeah the 18z RGEM is eye catching. Could be snow anywhere those high UVVs set up just southwest of the SLP. Some slight model disagreement about placement, so it will be interesting to see how radar and satellite evolve on Thursday.

To me this looks like widespread first flakes, but very localized heavy snow. NEPA seems to win regardless of model but hopefully NNJ and the Hudson Valley cash in some too.

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I'm starting to think a winter storm watch isn't out of the question for Sussex and Orange tonight or tomorrow. Probably not since temps below 1000ft are marginal and the localized nature of the event makes it susceptible to small model shifts. But you can't ignore what the data is showing. There are several indications for an impactful winter storm event.

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26 minutes ago, eduggs said:

I'm starting to think a winter storm watch isn't out of the question for Sussex and Orange tonight or tomorrow. Probably not since temps below 1000ft are marginal and the localized nature of the event makes it susceptible to small model shifts. But you can't ignore what the data is showing. There are several indications for an impactful winter storm event.

18z GFS is a big time event for all of Sussex county, NEPA, most of Orange County. The retrograding & stalling aspect of this event is giving me Snowicane vibes. Snow W of the Hudson w/ rain in New England 

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14 minutes ago, snywx said:

18z GFS is a big time event for all of Sussex county, NEPA, most of Orange County. The retrograding & stalling aspect of this event is giving me Snowicane vibes. Snow W of the Hudson w/ rain in New England 

That's a good analog for this kind of yin yang wrapped up low. FWIW, archived snowfall for the Snowicane event is wrong in Putnam County, NY, presumably due to sparse reporting in that area. Above about 500ft there was 12"+ with widespread 18-24" up a little higher back as far east as about Fahnestock State Park. East of there it dropped off rapidly. All maps and records I can find seem to indicate that the Hudson River was the dividing line, even though I know from first hand observation that that wasn't the case.

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14 minutes ago, steve392 said:

Was outside with puppy watching bees pollinating my foxgloves which keep on producing.  They, my sedum, royal vandals and roses keep producing new growth. 

Had numerous hard freezes here going back probably 3 weeks now. No leaves on trees since Halloween which is normal here.

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