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December Medium/Long Range Discussion


yoda
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1 minute ago, psuhoffman said:

It looks like we might finally time up a pretty good pattern with our prime snow climo window. It’s been forever since we did that. 
I’m trying to be guarded. And expectations should be kept realistic. It is still a Nina. We’ve had -AO/NAO Nina’s before where we did ok but not GREAT.  If 1996 happens awesome but I’d set the bar more realistically.  Let’s just get a warning event or two into the urban corridor then sprinkle in some more minor snows here or there. Imo that’s a realistic bar if we get an extended -NAM state during prime climo. 

ETA:  start to see signs the WPO vortex wants to anchor further west and allow a pna ridge or if the PV really gets obliterated and we see indications the AO will tank through to spring and that’s when we might start to dream BIGGER...for now in ecstatic simply to see real signs we should avoid a total dud this year. 

Things are looking better than most of us expected. The effects of the apparent SWE/weakening SPV and the weakening of the Nina with time are really wildcards, so interesting times ahead. I am always prepared for failure lol. Ninas seem to find a way to produce at least a couple moderate events here though. I wont mention Boxing day 2010(oops) but caught the western edge of that, and did ok in mid/late winter in 17 and 18 too.

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9 minutes ago, psuhoffman said:

It looks like we might finally time up a pretty good pattern with our prime snow climo window. It’s been forever since we did that. 
I’m trying to be guarded. And expectations should be kept realistic. It is still a Nina. We’ve had -AO/NAO Nina’s before where we did ok but not GREAT.  If 1996 happens awesome but I’d set the bar more realistically.  Let’s just get a warning event or two into the urban corridor then sprinkle in some more minor snows here or there. Imo that’s a realistic bar if we get an extended -NAM state during prime climo. 

ETA:  start to see signs the WPO vortex wants to anchor further west and allow a pna ridge or if the PV really gets obliterated and we see indications the AO will tank through to spring and that’s when we might start to dream BIGGER...for now in ecstatic simply to see real signs we should avoid a total dud this year. 

Regime ensembles paint a pretty picture for January regarding a favorable -  NAO Blocking signature and location.  

·
1h
 
In terms of the surface response to this weak vortex, it is too soon to say anything substantial - but note that the regime of the ensemble-mean is the negative NAO for the middle third of January, with Greenland blocking prevailing...
 
 
Image
 
Image
 
 
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1 hour ago, WxUSAF said:

Speaking of January, 12z EPS gets VERY close to a 10mb wind reversal in the Strat just after New Years, and apparently the latest Euro monthly keeps things rockin' through most of January at least.  

 
 
When Allen posts I listen. 
 
·
1h
 
The 12z EPS shows the 10mb zonal wind at 65N is approaching a reverse to easterly late in the extended. This COULD harbor continued/enhanced blocking in the high latitudes in the troposphere as we head deeper into January. Image from http://stormivstawxmodels.com
 
 
Image
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This week 2 precip anomaly is likely partially indicative of why were lacking a good snow mean on the EPS. Definitely not a cutter or northern track look. But it seems to indicate a lot of members shred systems as they head east and run into the blocking. Shearing them out likely and redevelop too Far East. But that’s a look I’ll take at range over most of the alternatives. 
ED622CD5-02E3-4353-8CC6-1A6294BF769B.thumb.png.7e469204b77e52289bd945c1c3d3d208.png
day 10-15 really shows it 

8408217E-F8E6-4B6E-81BE-AB027271DC95.thumb.png.6e9f1cc6f587f42ba9d7fede6dccaba0.png

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2 minutes ago, psuhoffman said:

This week 2 precip anomaly is likely partially indicative of why were lacking a good snow mean on the EPS. Definitely not a cutter or northern track look. But it seems to indicate a lot of members shred systems as they head east and run into the blocking. Shearing them out likely and redevelop too Far East. But that’s a look I’ll take at range over most of the alternatives. 
ED622CD5-02E3-4353-8CC6-1A6294BF769B.thumb.png.7e469204b77e52289bd945c1c3d3d208.png

I was looking at this too. Had me thinking maybe a coastal scraper type deal for early Jan. Not suggesting bomb cyclone II or anything.:ph34r:

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Miller B train. Although the GFS does like the early Jan period. One of those shortwaves has to hit over the next couple of weeks. I cant see us getting shutout going into our prime climo with that much blocking. Maybe just some small overrun events. But no way we are shut out with that pattern. 

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12 minutes ago, clskinsfan said:

Miller B train. Although the GFS does like the early Jan period. One of those shortwaves has to hit over the next couple of weeks. I cant see us getting shutout going into our prime climo with that much blocking. Maybe just some small overrun events. But no way we are shut out with that pattern. 

From your keyboard to @WxWatcher007 sickle.

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17 minutes ago, clskinsfan said:

Miller B train. Although the GFS does like the early Jan period. One of those shortwaves has to hit over the next couple of weeks. I cant see us getting shutout going into our prime climo with that much blocking. Maybe just some small overrun events. But no way we are shut out with that pattern. 

It's  been a few years since we had a decent pattern heading into prime climo.

Pattern isn't perfect but it's damn good compared to the past few years where we were  model watching praying for a pattern change which was always 2 weeks away.

It appears that January could afford us several chances. Seems like we need 3 or 4 opportunities to hit on 1.  

Potential is there for good January. Alot just comes down to caous and luck.

 

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If people focused on what they get vs. what others get then whatever snow that falls will be awesome. It only becomes less awesome when some get 3" but are mad because Allentown got 7" and Worcester got 12". If we get a parade of Miller B's then yeah we won't get as much as up north but we will most likely  get something. But that's not how we roll here I guess...it's always about what could have been.

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10 minutes ago, leesburg 04 said:

If people focused on what they get vs. what others get then whatever snow that falls will be awesome. It only becomes less awesome when some get 3" but are mad because Allentown got 7" and Worcester got 12". If we get a parade of Miller B's then yeah we won't get as much as up north but we will most likely  get something. But that's not how we roll here I guess...it's always about what could have been.

I would love to focus on what I get, except it's zero. Any advice?

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38 minutes ago, losetoa6 said:

The day 8 system still worth watching . No way am I looking past it . Lots can and will change that's for sure . Not to mention Xmas eve and any other shortwaves that will undoubtedly pop up in the med short range. 

Gefs 

 

gfs-ensemble-all-avg-conus-mslp_anom-9210800.png

There is one issue there. Like others have mentioned the HP originates in SE. that Hp you see there builds in later. Not saying it’s not possible, but my focus is more on what happens few days after. Of course I could just be kicking the cab down the road and say the same thing in a few days

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1 hour ago, leesburg 04 said:

If people focused on what they get vs. what others get then whatever snow that falls will be awesome. It only becomes less awesome when some get 3" but are mad because Allentown got 7" and Worcester got 12". If we get a parade of Miller B's then yeah we won't get as much as up north but we will most likely  get something. But that's not how we roll here I guess...it's always about what could have been.

This is snow Buddhism.  Learn to want you have.  

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