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The Allsnow Blizzard of 2026


Rjay
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1 hour ago, NJwx85 said:

This is still playing it pretty conservative for our area. I told my Wife "12 to 18 inches" and she said, "In your dreams" LOL

I’m here in Pearl River, New York, one of the rare few times I’m glad to be in the most southern and eastern part of Rockland County. Looks like every mile south and east can make a big difference with this storm.

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1 minute ago, bluewave said:

That was our last top tier KU event in December. 

 

When is the last west of forecast coastal - i truly cant remember in the last 7 - 8 years.?  When it used to be a routine occurrence.  Not a southwest flow event - i mean true miller a/b or c.

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4 minutes ago, MANDA said:

I was not living here for that storm, was in far s.e. Morris County and I ended up with 16".  Meanwhile a 15-20 min drive to my east that had 25-30".

Screenshot 2026-02-20 at 2.57.03 PM.jpg

 That was a true Miller A with a big, deep trough that cutoff over the TN Valley, however the abrupt cutoff is similar to what we will see with this storm. 

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4 minutes ago, MANDA said:

I was not living here for that storm, was in far s.e. Morris County and I ended up with 16".  Meanwhile a 15-20 min drive to my east that had 25-30".

Screenshot 2026-02-20 at 2.57.03 PM.jpg

I had 7" vs 20+ 20 miles east... this storm reminds me of that one but not as powerful,

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14 minutes ago, SACRUS said:

 

When is the last west of forecast coastal - i truly cant remember in the last 7 - 8 years.?  When it used to be a routine occurrence.  Not a southwest flow event - i mean true miller a/b or c.

I  believe the 2-1-21 KU event and the follow up system about a week later. But the Canadian did have the wild further west run about week before which was close to what verified. Even though the Euro was too suppressed for both systems.

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7 minutes ago, Prue11 said:

Let’s take guesses. Is anyone seeing 2’ from this?

lol I see we're in the phase now where expectations get set so high that some people will be sad on Monday morning even if they get 19".  And I include me in 'some people', because once I see those crazy numbers this close to the event, I start to cash them in.  That's a me problem.  But not a just me problem I bet lol.

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54 minutes ago, Uniblab said:

Were you weatherfeen? 

 

yes it's me feen, a.k.a tonylovesnow. Sorry if i ever offended anyone im a new man and ive changed into a whole new :weenie:still annoying but a bit more mature. 

@TriPolyes that was my picture i floated around on twitter. Cause i do believe if we tuck a little more it could realistically mimic Boxing day blizzard at least to a point!  

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I said this in the MA forum but figured I’d send it here too…

I believe there is potential for 12"+ for coastal regions from Delaware to Mass, but I am honestly decently concerned about a potential rug pull I-95 N and W with this one. A storm as intense as this is likely to have a more consolidated precipitation shield which slams the coast, but can make it difficult for those bands to pivot farther inland. There is legitimate risk the phase does not occur until north of our latitude unless we see more digging upstream. The inverted trough is a wild card that could make up for it in spots though. Not to mention, surface temperatures are marginal with this one, and we could see a period of white rain cut down on totals. Hoping for the best, but I see clear warning signs and parallels to storms like January 2015, January 2018, January 2022, Boxing Day, etc.

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32 minutes ago, nycsnow said:

image.thumb.png.c1b05008fd98ae5e583bad24f9fd1035.pngLatest NBM

Still ongoing, friend: 

image.thumb.png.5b62d9844d81c9c4183ee5d0d71035ea.png

While on the subject, I wrote to Don and someone else about how snowfall is determined by the NBM several weeks ago. For clarity, I mentioned that the weights (available here: https://vlab.noaa.gov/documents/6609493/32850490/CONUS_SNOICEACCUM.pdf) temporally vary. On top of time-varying weights, the ensemble members incorporated into the mean are lagged by ~1-2 cycles (depends on modeling system)... To see which models/cycles are included by the NBM at any forecast time, you can use this link: https://blend.mdl.nws.noaa.gov/nbm-dashboard

Additionally, it takes ~1 cycle to post-process the NBM. Therefore, the most up-to-date NBM snowfall product will have a lag of ~2-3 cycles. This is where the confusion is imo.

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