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


JenkinsJinkies
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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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I mean.. we have a block over Alaska. But we lost the NAO, I knew this would be a wild card.. it's been so hard for us to have multiple -NAO's since 2013, either that or they are associated with a SE ridge lately.  and the +PNA is much weaker.  Look at that High in the SW Pacific. 

https://ibb.co/CBMrnpV

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2 hours 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 hear ya!   The 240 big 3 were close in the NW Gulf at 12z and the extended GFS op produced with support from the GEFS. 

The 18 GFS has went to crap in the OV.

The Weeklies still look good Feb 21 - Mar. 20 and the potentially suppressive block has diminished.

 

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2 hours ago, Stormchaserchuck1 said:

I'm not really impressed right now.. we seem to be in a Hadley Cell expansion/mid-latitude High pressure regime that is holding through all of this tendency toward blocking that we are/have been heading into. 

This is day 10-15 eps

IMG_1405.thumb.png.86b332f56d83cd1b2adac6d5a6523fdf.png

Seriously how good of a pattern do you think we need? This is a serious question. Because sure there are some super minor things I could be hyper critical of. Sure ideally I’d move the pac trough west just a smidge.  I guess the -nao could be -3 stdv instead of just -2.  But my god that’s way more good than bad. It’s the best pattern we’ve had in many years. It’s probably a better pattern than we see at all at any time in 90% of winters. And you’re like “meh” it’s not good enough. So seriously. Do you think we’re like Atlanta now and we need like a once in 100 year pattern to get a ton of snow or something?  It’s not supposed to be this F$&@?#% hard!  

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lol far too much weenie nonsense going on right now over A SINGLE 200+ hour OP run. Calm the fuck down y’all. Did we expect the GFS to hold a massive snowstorm for 200+ hours? Ensembles, ensembles, ensembles at this range.

It’ll be back and gone again by tomorrow.

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