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Mid/Late February will be rocking. (This year we mean it!) February long range discussion.


JenkinsJinkies
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Euro looked like it was trying to load up at the end of it (ah c'mon one more frame :lol:) You know, even for fantasy range, guidance has been rather consistent in developing a juicy wave in the ss. Other details have jumped around, of course, but that thing has been on all the gfs fantasy runs the last several days...and now it's popped up on the Euro the last couple runs. With things being less suppressive like @psuhoffman said becomes a trendN uh...hm? (Only one m so as not to copyright infringe Bob Chill)

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21 minutes ago, Maestrobjwa said:

Euro looked like it was trying to load up at the end of it (ah c'mon one more frame :lol:) You know, even for fantasy range, guidance has been rather consistent in developing a juicy wave in the ss. Other details have jumped around, of course, but that thing has been on all the gfs fantasy runs the last several days...and now it's popped up on the Euro the last couple runs. With things being less suppressive like @psuhoffman said becomes a trendN uh...hm? (Only one m so as not to copyright infringe Bob Chill)

looks like it would of been suppressed

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16 minutes ago, stormy said:

I'll take this at 270.  3 consecutive runs.    At 240 the GFS, ECM and GEM all have the goods brewing in the NW  Gulf and S. Texas.    It's a SLAM DUNK  with all 3 on board at 240.  Rather unusual.                       

 

You made a classic blunder. The first and most important is to never start a land war in Asia. The second, somewhat less known but equally as important, is never trust weather models showing snow in the Mid Atlantic until you see it on radar at your doorstep or out your window. 

image.jpeg.f2260efeb27ab29d85e1146bda1db3d4.jpeg

 

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50 minutes ago, Stormchaserchuck1 said:

I think the blocking signal looks kind of pathetic now on models.. models trended less +pna and less -nao in the last few days. Still has them dont get me wrong, but it looks like a "moderate" cold air situation. 

Am I wrong to think that COULD be an okay thing, in terms of making the chance of cold/dry/suppressed less of a possibility? 

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56 minutes ago, Stormchaserchuck1 said:

I think the blocking signal looks kind of pathetic now on models.. models trended less +pna and less -nao in the last few days. Still has them dont get me wrong, but it looks like a "moderate" cold air situation. 

I think that's basically what JB was alluding to earlier this morning.  

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2 minutes ago, midatlanticweather said:

You made a classic blunder. The first and most important is to never start a land war in Asia. The second, somewhat less know but equally as important, is never trust weather models showing snow in the Mid Atlantic until you see it on radar at your doorstep or out your window. 

 

 

Yea man!  I have even seen radar fail because the scan is about 12,000 ft. over Augusta. Radar has indicated snow for hours that all evaporated before reaching the surface. That virga can be a beast out here!

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17 minutes ago, Steve25 said:

Am I wrong to think that COULD be an okay thing, in terms of making the chance of cold/dry/suppressed less of a possibility? 

Yeah, the runs were more suppressed before when models had more +PNA and -NAO. The +PNA has -0.3 correlation to precip, and -NAO has -0.4 correlation to precip, so you're right about that, but they both have +low pressure on the coast-correlation. I was hoping for a blizzard lol

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4 minutes ago, brooklynwx99 said:

holy crap

There is an average +15 day lag late February to March, so that 10mb warming would favor -NAO conditions (about 2/3 times) March 5-15.. maybe longer if the graph says longer, but it just had +zonal wind in the long range a few days ago, now it's opposite, so we'll see. In mid-late March the downwell time on average +10 days. 

This 10mb warming is what usually happens in Strong El Nino/Strong -QBO Winter's. 

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@stormybe careful of that gfs storm. It’s alone. And frankly I’m not even rooting for it because it gets to that solution because it never develops the nao block and swings a NS wave over is which opens the door to that stj wave to come north. But it’s a weird convoluted evolution with high bust potential and if that general progression is correct that’s our only shot as it totally breaks down the pattern after. No thanks. Give me the all other guidance solution. Maybe it means no PD storm but it leads to a long extends window of opportunity not just a low probability one off. 

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1 hour ago, Kevin Reilly said:

Umm March 12th 1993 it was 62f before we got whacked!  PHL picked up 13" of now and 4" of sleet with a rainbow at the end.

It started snowing at 11 pm at 42f.

 

What we need is dynamics.

‘93 was a triple phaser definitely had some dynamics. 

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7 minutes ago, frd said:

Hmmm   Feb 2010

 

Does anybody have a link to a quick explainer for how SSW impacts things at other levels of the atmosphere? My eyes glaze over at 10mb zonal winds, but if I had any idea how this impacted the charts I do kind of understand thanks to this board (250mb, 500mb, 850mb, surface), it would really help. Thx!

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10 minutes ago, Paleocene said:

Does anybody have a link to a quick explainer for how SSW impacts things at other levels of the atmosphere? My eyes glaze over at 10mb zonal winds, but if I had any idea how this impacted the charts I do kind of understand thanks to this board (250mb, 500mb, 850mb, surface), it would really help. Thx!

https://eos.org/features/how-sudden-stratospheric-warming-affects-the-whole-atmosphere

 

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1 hour ago, psuhoffman said:

@stormybe careful of that gfs storm. It’s alone. And frankly I’m not even rooting for it because it gets to that solution because it never develops the nao block and swings a NS wave over is which opens the door to that stj wave to come north. But it’s a weird convoluted evolution with high bust potential and if that general progression is correct that’s our only shot as it totally breaks down the pattern after. No thanks. Give me the all other guidance solution. Maybe it means no PD storm but it leads to a long extends window of opportunity not just a low probability one off. 

I did look some at the ops GFS progression around the possible PD event and beyond, and yeah, looks like it tries to just break down the flow soon after.  Not totally sure why.  I don't know how much of that would necessarily "have" to occur if the PD storm happens (if that makes sense), or if the ops GFS has just tended to flip the flow into a "meh" pattern in its extended forecast projections.  Obviously, there's some connection which you mention, i.e., this leads to that which results in the GFS showing whatever pattern later on.  I've noticed a few times that the ops GFS turns the 500-mb flow rather bland in the longer range, but that could be due to just being an ops at long range.

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