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2/13 Significant/Major Winter Storm Discussion & Observations


Northof78
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34 minutes ago, MJO812 said:

It's amazing how this happens all the time. What's the point of tracking a storm over 120 hours out , heck even 84 hours.

None. This has been like a broken record for two years now. At this point I will wait til after something happens before I get interested.

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19 minutes ago, Metasequoia said:

Seems like now would have been a good time to start tracking. A few days out, still lots of variability amongst models, but general agreement on some basics such as  timing, duration, etc.

Couldn't agree more... however, once the cat is out of the bag...  This system is not gospel today once way or the other. Just need to ride out the variability.  Very sensitive interactions.  

 

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5 minutes ago, wdrag said:

The 353AM attached.Ihavent checked for an update.

 

In my opinion as I do my own non AMWX posts... once/day is enough... that steadies out all the model fluctuations and tends to keep my group on message whether its trending up or down. 

Screen Shot 2024-02-10 at 6.27.30 AM.png

Thanks Walt, MPO seems to be the place to be for this storm!

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39 minutes ago, Franklin0529 said:

You get too invested. You say this every Storm, the models change an flip flop so much. Can't get too invested until 72 hrs prior, sure you can track but no sense of living an dying with every model run

Got to know your climo too-city and coast are unlikely to do well with an airmass that is 50-60 degrees going into a storm.   

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38 minutes ago, jm1220 said:

Thing is unfortunately next time will trend north too and screw us. Disaster of a winter that can’t end soon enough. Nice mild day today at least. 

61 here-cleaned out the garage this morning lol.   The snow removal stuff has dust on it.

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Just now, Metasequoia said:

Will be interesting to see what the 12Z Euro EPS looks like.  I suspect this might bring people back from the ledges... for good or bad.

 

This close in its rare to see them be that different than the Op but given how much the Op jumped they probably will be somewhat south of it

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32 minutes ago, Northof78 said:

3-5" for NYC from both the EURO/GFS and the most north models...seems like a good start for accumulation potential

I dont think there is nearly enough respect for Positive snow depth change, ESPECIALLY the gradient edge where temps are a possible accum factor. Gradient is where the largest errors occur. You can go 10 to 1 in colder thickness below 540 but not above.  That's why the NWS uses ratios in small increments to match temp/type/vertical thermal profile.  

It's not the old days... we now have better techniques to attempt the reality. Referencing 10 to 1 in warmer side of the gradient is not my choice.  I've seen comment about big snowfall rates overcoming but what if that very strong lift ends up north of NYC?  Then it's harder to accum. 

I may learn my lesson, but for now 12z/10 Canadian is pathetic, ensembles not too good I80 south except the more robust EPS and so prior reputation for the Euro warrants keeping that in mind. I've lost faith in the Euro and notice that even though the GES is not a great flag for events...it's GEFS Positive Snow Depth Change has been better than the Euro in my opinion. NBM is still up for 2-3" so not all is lost.

I will keep an eye on GEFS positive snow depth change and if it grows... NYC good, but otherwise we need the Canadian on board. I can only think the Canadian will move its solutions north and snowier on the edge in the next couple of cycles. 

I'll check back tomorrow morning.

 

 

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59 minutes ago, MJO812 said:

It's amazing how this north trend happens all the time after people ( yes myself also ) gets excited about model runs over 120 hours showing good stuff. 

And it's like no lessons are ever learned

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2 minutes ago, Rjay said:

And it's like no lessons are ever learned

We tried to tell em. We get yelled at and called names. After 25 years you figure you would learn SOMETHING about the weather 

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22 minutes ago, wdrag said:

I dont think there is nearly enough respect for Positive snow depth change, ESPECIALLY the gradient edge where temps are a possible accum factor. Gradient is where the largest errors occur. You can go 10 to 1 in colder thickness below 540 but not above.  That's why the NWS uses ratios in small increments to match temp/type/vertical thermal profile.  

It's not the old days... we now have better techniques to attempt the reality. Referencing 10 to 1 in warmer side of the gradient is not my choice.  I've seen comment about big snowfall rates overcoming but what if that very strong lift ends up north of NYC?  Then it's harder to accum. 

I may learn my lesson, but for now 12z/10 Canadian is pathetic, ensembles not too good I80 south except the more robust EPS and so prior reputation for the Euro warrants keeping that in mind. I've lost faith in the Euro and notice that even though the GES is not a great flag for events...it's GEFS Positive Snow Depth Change has been better than the Euro in my opinion. NBM is still up for 2-3" so not all is lost.

I will keep an eye on GEFS positive snow depth change and if it grows... NYC good, but otherwise we need the Canadian on board. I can only think the Canadian will move its solutions north and snowier on the edge in the next couple of cycles. 

I'll check back tomorrow morning.

 

 

A Euro/GFS scenario verbatim is probably more realistically 1-3 inches on colder surfaces for NYC. There would be some decent snow likely on the back end but it would warm and rainy for a while.  

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My thinking best chances for 2-4" starts along I80 and west of 287 for the NJ crew.  First call for my area 2 to perhaps as much as 4".  Thinking 1/2" to 1" of slop NYC/LI and immediate NJ burbs EWR area.  1-2" interior NE NJ. 

Subject to some adjustment but not envisioning 6" or more outside of NW Sussex on north and east from there.

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1 hour ago, jm1220 said:

Thing is unfortunately next time will trend north too and screw us. Disaster of a winter that can’t end soon enough. Nice mild day today at least. 

The trends are usually north even in good winters which is why you almost always want a suppressed look several days in advance. 

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22 minutes ago, jm1220 said:

My shovel has been sitting in my storage room for 2 years now. 

I get you guys on the coast have had it the worst but 45 miles NNW of NYC I had 14 inches in January as did most north and west of me. And yes it's still a horrible winter although January was a C-  it would have been a B if it wasn't so damn mild which seems to be the new norm. 

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4 minutes ago, CPcantmeasuresnow said:

I get you guys on the coast have had it the worst but 45 miles NNW of NYC I had 14 inches in January as did most north and west of me. And yes it's still a horrible winter although January was a C-  it would have been a B if it wasn't so damn mild which seems to be the new norm. 

You also average twice as much snow per year…our average is 30” and we have 5” so far…it’s all relative 

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1 hour ago, wdrag said:

The 353AM attached.Ihavent checked for an update.

 

In my opinion as I do my own non AMWX posts... once/day is enough... that steadies out all the model fluctuations and tends to keep my group on message whether its trending up or down. 

Screen Shot 2024-02-10 at 6.27.30 AM.png

Agreed, 100% Walt.

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