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January Medium/Long Range Discussion


WinterWxLuvr
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14 minutes ago, frd said:

Don't see that too often.  I like our chances for the "CAPE" storm. 

Ha they always fail, but half the fun of this silly hobby is just having something to track. A chance. After a prolonged period of 'nice' weather with really no shot, this probably is the first legit chance for a light, maybe moderate frozen event for at least part of this subforum outside the highlands.

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4 minutes ago, CAPE said:

Ha they always fail, but half the fun of this silly hobby is just having something to track. A chance. After a prolonged period of 'nice' weather with really no shot, this probably is the first legit chance for a light, maybe moderate frozen event for at least part of this subforum outside the highlands.

After a warmish weekend a rather  drastic turn to colder Monday and then we monitor our chances.  Some snow would be nice.  

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From the site Stratobserve, it appears that a stretched PV might occur during the timeframe from early to mid Jan.  Sometimes this can lead to cold air outbreaks and winter storms.  

Also, the NAM state may be negative during this period. 

 

gfs_nh-namindex_20211226.png.888d36e67742f568dc2236a48ee0d076.png1286391767_ao.sprd2(27).thumb.gif.7156b62369e8e04d8547bdd0ecc1ed38.gif 

 

gfs_nh-vort3d_20211226_f312_rot000.thumb.png.073e30016114eb01d5c631faefdeccc3.png

 

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6 minutes ago, nj2va said:

18z GEFS doesn’t seem supportive of the OP for the 3rd, at least looking at 500 anomalies and vort maps on TT.

Looking at the 24 hr precip panels you can see the second wave of precip come up into the area. Not sure how pronounced the vort would be on the mean  from a week out. Don't know if it's snow but there's definitely 2 shots of precip.

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45 minutes ago, nj2va said:

18z GEFS doesn’t seem supportive of the OP for the 3rd, at least looking at 500 anomalies and vort maps on TT.

The op runs at 500 have quite the spread over the past five runs for the 3rd. Very little, if any consistency. We need a couple of more days to start to get some clarity.

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28 minutes ago, Wonderdog said:

The op runs at 500 have quite the spread over the past five runs for the 3rd. Very little, if any consistency. We need a couple of more days to start to get some clarity.

Its probably a pretty decent sign that both the Euro and GFS have a nice 500 pass to our south in that timeframe though. 

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4 hours ago, nj2va said:

I miss seeing bowling ball tracks like these and confluence north of us….results in blue pixels over us!

image.thumb.png.b85fd47dd927b0c5fab81694b9434043.png

It's leaving the energy further back every run. It will probably get shredded like the CMC/NAVGEM are showing if it gets left much further back.

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1 minute ago, StormchaserChuck! said:

Not liking this 384hr GFS

8a.thumb.gif.a47bb9eb7e78bffe8feb492b79033302.gif

Looks like my composite of top 20 years where PNA dominated Dec 1 - Jan 3 rolled forward

1.png.f86ccba48c026af8c7f2232ed2b31db7.png

I have a slight +PNA signal starting around Jan 15th, but February is starting to look like it might turn out warmer, especially if that verifies

Oh crap.

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6z GFS is more amplified with the NS energy getting involved/phasing, but the depiction at the surface is a little odd based on the upper level look.

Upshot is it's a NE snowstorm this run.

0z Euro/EPS has a much weaker wave tracking along the boundary and the cold air is late to the game. CMC leaning this way as well.

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