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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"?


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  On 1/17/2025 at 12:55 PM, WestBabylonWeather said:

I can’t bear the thought of it raining on LI make it stop 

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I’m hopeful we get something but it’s a thread the needle situation where we need the S/W to track favorably and not be too amped. Areas just inland are favored for the best outcome but hopefully the less amped Euro has a clue here. We’re getting closer to the point though that RGEM doesn’t normally move much. 

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  On 1/17/2025 at 1:00 PM, jm1220 said:

I’m hopeful we get something but it’s a thread the needle situation where we need the S/W to track favorably and not be too amped. Areas just inland are favored for the best outcome but hopefully the less amped Euro has a clue here. We’re getting closer to the point though that RGEM doesn’t normally move much. 

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Hopefully 0z represented the furthest west it will go, but yes it will need to tick east a bit more for coastal sections. Even the cmc was less amped than the rgem

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  On 1/17/2025 at 1:02 PM, EastonSN+ said:

Thanks Don. I am excited about the AI being so consistent. Of course the event hasn't happened yet however if the event is closest to what the AI has been showing, then we may have a more accurate closer range model which is a big win.

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I suspect that it may be another year or two before AI becomes decisively more skillful with its forecasts. Sooner would be better.

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  On 1/17/2025 at 1:16 PM, ILoveWinter said:

I think at this point 2-4 is a good call for the immediate metro with less as you go east. Even that would get me excited as it's been 2 years since a sort of moderate snowfall in the City.

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if you don’t mind me asking, why are you going so low? I think this could be a 3 to 6 inch storm. Maybe more

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  On 1/17/2025 at 1:08 PM, Nibor said:

What has its verification score been? I know early on it had some issues. 

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It’s done well at 500 mb, but not as well with specific synoptic events. I suspect it’s still a year or two away from doing better with such events (assuming that it’s still “learning” in real-time).

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  On 1/17/2025 at 1:16 PM, ILoveWinter said:

I think at this point 2-4 is a good call for the immediate metro with less as you go east. Even that would get me excited as it's been 2 years since a sort of moderate snowfall in the City.

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honestly the only model showing 2-4 is the euro, every other model doubles that minus the euro/nam

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  On 1/17/2025 at 1:58 PM, the_other_guy said:

this is not a rain storm guys.

 

Let’s not get ridiculous here

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We're relying on good timing to be on the right side of the boundary, and very often these fronts slow down a bit as we get closer to the event. 

Rain (even a bit inland) is always a possibility. Hopefully we'll see some positive trends today. 

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