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January 2014 Pattern Discussion Part II


Typhoon Tip

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Don't worry, Ray... this is coming... per the NYC thread... one of the most reliable on the board.

 

Mikehobbyst, on 22 Jan 2014 - 6:19 PM, said:snapback.png

 

 

I have an eerie feeling between 1/28 and 2/1 we have a PV complete phase in with a southern stream impulse for a Miller B HECS, NESIS 4+ event.  Something that could potentially bring 18-24 inches of snow to the NYC and LI area with 50 knot winds.  Severe blizzard event.  I am riding this out until I am proven wrong.  I just have an extra sense feeling we will have 40-50 inch snow depths, drifts to ten + feet and temps below zero for a once in generation event to close out January for our immediate area.  Pattern has the earmarks for something very special and extreme. Looks like the only way it will break or snap back to normal cold.  Please consider the possibility being not impossible.  Let's critique this post when the dust settles and revisit.

 

welcome to age of entitlement....

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True but when the models don't cut QPF to the S&E of where they have the "true" precip, IMO that's usually indicative that they're figuring out the best they can in their grid scales that there is going to be a real sharp cutoff.    They did fairly well with the placement of the edge of the heavy.  The trend NW of that was pretty undeniable those last few runs.

 

 

The sharp cutoff was definitely under predicted by both models and by even seasoned mets using the model parameters to try and figure out the reality of the precip shield.

 

In short, nobody predicted there to be a gradient where one went from 1-3" to 8-10" in less than 20 miles. And I don't think it was possible to predict that without the benefit of hindsight.

 

The only thing I think was somewhat predictable (and I mentioned it that morning) was that west/north of I-495 and roughly near and NW of I-84 in CT would have a struggle to reach warning criteria snowfall...which certainly ended up verifying. There are usually very distinct model sigs for very sharp cutoffs and they weren't there in the past storm...that band ended up more intense than forecast and coupleed with the loss of mositure inflow, it created a higher cutoff near the northwest region of that banding than would have been otherwise.

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The sharp cutoff was definitely under predicted by both models and by even seasoned mets using the model parameters to try and figure out the reality of the precip shield.

 

In short, nobody predicted there to be a gradient where one went from 1-3" to 8-10" in less than 20 miles. And I don't think it was possible to predict that without the benefit of hindsight.

 

The only thing I think was somewhat predictable (and I mentioned it that morning) was that west/north of I-495 and roughly near and NW of I-84 in CT would have a struggle to reach warning criteria snowfall...which certainly ended up verifying. There are usually very distinct model sigs for very sharp cutoffs and they weren't there in the past storm...that band ended up more intense than forecast and coupleed with the loss of mositure inflow, it created a higher cutoff near the northwest region of that banding than would have been otherwise.

 

I thought the wide right hook/swing of the 5h vort would have been one.

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I thought the wide right hook/swing of the 5h vort would have been one.

 

 

No, that was def a reason to predict less (i.e under warning criteria) but it wasn't a smoking gun for a very sharp cutoff. You typically want to see a few things on the models for a very sharp cutoff:

 

1. Meso models showing very sharp qpf gradient (GFS almost never does this so you look to meso-models)

2. Very dry air in the lower mid-levels and sharp RH gradient. If you don't see the qpf cut-off, you want to see this which still might indicate it.

3. Strong arctic high to N/NW.

 

 

Really none of these were present except sort of #3. Once we got late enough into the storm, then it started becoming more apparent. But there is a reason that not a single met or forecast painted 1-3" from Ray to ORH to HFD.

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This is by far the most upbeat and non-cautious you've ever been in the winter, lol. For good reason though, you're taking it home relative to average snowfall.

 

I know it seems that way, but It's JMHO. I think Will and Ryan probably agree as well.  I personally like the look going forward. For once we have all three sets of guidance looking rather nice. That's a boost to this guy's confidence. Maybe it doesn't shake out to be this incredible stretch, but I like the look through mid Feb.

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And some were shut out and cried a lot less

I was going to say that, the last storms a lot of  folks got squat so but never said a word, there must be a hundred posts in the last few days from those who did well up to this last storm whining and complaining. Mean regression. like I said before its sometimes easy to see the difference in the board, you have the folks who enjoy winter and get out in it and you have the window watchers who enjoy the stuff as it falls.

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The sharp cutoff was definitely under predicted by both models and by even seasoned mets using the model parameters to try and figure out the reality of the precip shield.

 

In short, nobody predicted there to be a gradient where one went from 1-3" to 8-10" in less than 20 miles. And I don't think it was possible to predict that without the benefit of hindsight.

 

The only thing I think was somewhat predictable (and I mentioned it that morning) was that west/north of I-495 and roughly near and NW of I-84 in CT would have a struggle to reach warning criteria snowfall...which certainly ended up verifying. There are usually very distinct model sigs for very sharp cutoffs and they weren't there in the past storm...that band ended up more intense than forecast and coupleed with the loss of mositure inflow, it created a higher cutoff near the northwest region of that banding than would have been otherwise.

 

Will...I think I posted the GFS UVV and you guys probably had access to the Euro.  I think they aligned and indicated very much that it was a have and have not situation.  Particularly the late GFS nailed it pretty well but still blew on the QPF.  There's no way you can predict it though, but we're mainly talking about putting your hands over your ears and eyes and denying that well W&N the trends were disturbing.

 

I will go back to what I said about it snowing in the teens here.  I never recall you getting buried or even Boston for that matter in those situations.   In fact it's normally much worse with even less snow up that way.

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Bare frozen tundra in ALB.  Ugly.  It's been a rough January out this way.  Apart from the long duration light snow event at the beginning of the month, there has been nothing of note.  I think we've had about 4 hourly reports of moderate snow out of the 500+ hours so far this month.  I hope things start changing for the better soon.  5 more weeks until climo goes south.

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