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Discussion-OBS slippery plowable moderate to high impact snowstorm with many delays near I95 and inland btwn 10AM Sun 1/19-4AM Mon Jan 20. R/S line uncertain near and east of I95 - parts of LI may be limited snowfall of around 1"?


wdrag
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1 hour ago, SnowGoose69 said:

The main problem I see now is DPs/Ts higher than modeled.  for example LGA 40/30, both NAM/GFS had 36/27 or so.   It may mean any snow from 18-21Z or so won't do a whole lot but not sure it matters a ton as 22-02 was probably when the meaningful rates were coming anyway

Higher than modeled?  

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1 minute ago, winterwarlock said:

 

Its been bad...but is it right now? Seems to be supported by other models currently 

So....a storm is progged. It looks like its waffling. At some point it hones in on a moderate event. As we get closer higher totals get thrown about. As showtime arrives, things don't go quite as planned and totals get cut back. Stop me if you have heard this before. 

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I've got 2-5 coast with less east end of the island.  3-6 city and immediate northern burbs, upside possible if band. 4-8 north of the usual dividing line Merrit through 287 region.   Not really overthinking this one.  Ratios should be decent north and west.

Nice moderate storm.  

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10 minutes ago, weatherpruf said:

So....a storm is progged. It looks like its waffling. At some point it hones in on a moderate event. As we get closer higher totals get thrown about. As showtime arrives, things don't go quite as planned and totals get cut back. Stop me if you have heard this before. 

The gfs would support the NWS snowfall map 

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1 minute ago, SnowGoose69 said:

The HREF looks overdone.  To me the metro will get 99% of their snow from 23-02Z probably, unless somewhere there are 2 inch an hour rates 6-7 would be hard to reach

I’m thinking 3-5” for most and 6-7 where a band can set up. Shoreline where warm air is stubborn maybe 2-3. I wish the models stuck with the wetter 0z look but most backed off to some degree. Just doesn’t look like that organized/dynamic a system. Anyway it’ll be a fun few hours and we’ll definitely have a wintry look this week in the frigid cold. 

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6 minutes ago, NittanyWx said:

I've got 2-5 coast with less east end of the island.  3-6 city and immediate northern burbs, upside possible if band. 4-8 north of the usual dividing line Merrit through 287 region.   Not really overthinking this one.  Ratios should be decent north and west.

Nice moderate storm.  

X 100

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2 minutes ago, jm1220 said:

Short range models do show an enhanced area on LI to some extent. Wonder if we’ll get a little help from the Sound via convergence on the northerly flow enhancing the snow. 

The north shore special can be good for an extra inch or two.

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41 minutes ago, winterwarlock said:

 

Every model out there has been wrong and late to the party at some point so its not alone

But lets see if its right currently 

The rgem was way more wrong than the other models. It was still holding on to an inland runner just yesterday, the only model showing anything close to that solution. The Canadians took a major L on this one.

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