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Snowfall NYC subforum Jan 6 and OBS if needed


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1 minute ago, MJO812 said:

The NAO was deeply negative.           ( unless I'm wrong ) This time it's not.

If we have strong enough confluence and northerly flow in the mid levels to our north driving in dry mid level air, it doesn’t matter how officially negative the NAO is. We have a strong 50-50 low and PV lobe to our north which have to weaken or move out of the way or we get zilch. A stronger S/W will help but that will be weakening as well as it moves east into the shredder created by the big upper low to our NE. That’s what causes the ESE leaning precip shield, that’s how you can tell confluence and dry air are crushing it and weakening the S/W. 

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1 minute ago, Jersey Andrew said:

That was an absolutely crazy miss. My parents in northern Virginia received 28 inches and I got nothing in northern Jersey. NYC and Jersey made up for it with Boxing Day blizzard 2010.

I got 40 inches that month of Feb 2010. NYC saw 2 more snowstorms after that ( mid and late February)

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This has the potential to give a lot of us the most snow we've seen since January 2022 (I'm talking about central coastal NJ who have gotten screwed) It would only take slightly more than an inch at my place to be specific in Point Beach to beat 2022/2023 and 2023/2024 single storm snow total. 

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23 minutes ago, RU848789 said:

I know this is the 1/6 thread, but didn't know where to put the latest on tomorrow's little shortwave that could...advisories are actually up for 1-2" from Philly metro to about AC and SW of there in PA/DE/MD/NJ. 

PHI_Snow.png?ex=67784a90&is=6776f910&hm=7fada5c374024244d65c43b5ec028be37456c0d58457251f1099045b0f391a43&=

Probably a really nice stretch coming up for BWI-ACY, maybe 15” in those areas by the time Monday’s done. While some places in SNE have 1” or less. 

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2 minutes ago, SnowGoose69 said:

I tend to ignore the ICON once inside 96.  It actually seems to perform better on the end result often times beyond that, once inside it can do wild stuff.  The NAM had a classic NAM run at 18Z for sure, not in a good way unless you're in a small niche of MD.

All the models trended better at h5 at 12z. Can't ignore it just yet. 

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Am negative Nelly on the ICON...  I normally dont like to be negative on events except for perspective.  

 

Are we really going to see a 990MB low east of NJ Monday evening?  Weaken it and therefore weaken the northward waa surge.  

 

I hope its right but I cant count on it.  At east its this far north but that could all be Sfc Pres related. 

 

By the way a strip of watches are out now Plains to OV.  My guess it may be hard to get aircraft out of some of these Watch areas into PHLLy-DCA Monday morning.  If I was flying PHl-DCA ..I'd get on a flight Sunday or Tuesday to ensure destination nearly on time (ensure fewer cancels).  Just my 2c. 

 

12z/2 NAEFS 24 hr 5MM keeps edging north to near NYC now... it has some variability but so far so good.  I don't want to see that ebb south the next couple of days.  5mm/25mm = 0.2" qpf...  again it might still only be 0.01 but trend so far, is our friend... as many have oft said...northern fringe.  

 

New 19z/2 BOM qpf attached. Good sign but NOT a done deal...  There is something WPC and local WFO's RE looking at that I have to respect on qpf being almost nil north of I80 on their graphic.  In other words, BOM ICON NAEFS may be too bullish...

me I'm steady good with 1/4-2" I80 north-NYC, maybe lucky 3" sw LI.  Melting e LI. 

This could be wasted words... will check back tonight at 730P, and again tomorrow at 730A.  Fingers crossed but hope doesn't do it... dynamics - confluences- short wave stronger and longer can. 

Screen Shot 2025-01-02 at 4.32.47 PM.png

Screen Shot 2025-01-02 at 4.37.59 PM.png

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