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SE Mid-Long Range Discussion II


strongwxnc

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Western ridging holds on a lot in this run. The blocking works north of Alaska toward the North Pole. That keeps the cold pointed our way, but doesn't get overly cold perse. The trend is what matters and western ridging is a good sign, esp. considering how often s/w break up in the southwest and the tendency of s/w to amplify. I think someone in the East or Midsouth or Southeast will end up with a snowstorm during this frame at some point.

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Looks like a miller a on the cmc at 132-144. Hard to tell what's what till its on Ewall.

Also it looks to have a cutoff in the southwest at the same timeframe.

Friday night it does look good for northern Miss, Ark and Tenn. The 144 isn't in yet, but the southwest system is pretty far out there.

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the pattern coming up could be a major boon for the South and esp. the Southeast. High latitude blocking usually does wonders in the Southeast as far as getting both precip and cold, but lots of times we still aren't quite cold enough. This may be the time (great timing -- January) for a big event or 2. The GFS is hinting very early on for the Southeast, not so much in the Northeast, that our heights are low and the orientation argues for increased precip chances + colder than normal. That continues on through the run, but obviously these runs change daily, the point is they keep on with the north Pole blocking, which is an extreme rarity. I'm not sure I'm sold on it yet, but its hard to ignore it and ecmwf that almost joined the 2 major ridges at the poles. What that would do if it occured is cause a very supressed storm track with baggy troughs and possible cutoffs, and this time we have cold air to work with. It's pretty exciting, I haven't seen this pattern in I can't remember when. We're used to Greenland blocking, which is good for the east in general, but not so much Polar -Alaskan-Scandinavian blocking.

Here's some images. In the final frame at 384, maybe useless I know, but to have high heights over the west coast, Greenland and the Pole can only spell one thing for the South.

post-38-0-78538900-1326000638.gif

post-38-0-77668900-1326000641.gif

post-38-0-49862400-1326000646.gif

post-38-0-00757100-1326000662.gif

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at 144, the cutoff west of srn Cali is approaching west Texas. Very cold in the eastern half of the country and the Ak. vortex has dropped south.

I'm out to 168 and the cutoff is still at the Mex./Tx. border. It's taking it's sweet time.

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The Plains or Midwest wave barely misses the Texas system in this run. Its something to watch. Back things up just a little and it would be quite a storm developing in the Gulf. But the cold northern stream dominates.Meanwhile major western Alaska ridging and more cold coming down from nw to Se, with a 1054 high in northwest Canada.

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The Plains or Midwest wave barely misses the Texas system in this run. Its something to watch. Back things up just a little and it would be quite a storm developing in the Gulf. But the cold northern stream dominates.Meanwhile major western Alaska ridging and more cold coming down from nw to Se, with a 1054 high in northwest Canada.

I know we have been getting some good Gulf Low's the past 2 winters but we are due for one that really tries bombs out in the Gulf. Given the amplified pattern, this may be the year for something special coming out of the GOM.

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I know we have been getting some good Gulf Low's the past 2 winters but we are due for one that really tries bombs out in the Gulf. Given the amplified pattern, this may be the year for something special coming out of the GOM.

Its all about timing of the features, if it comes out at just the right time, they would phase or join forces in the lower Miss. Valley, possibly the Gulf Coast. Thats a long shot though, but its possible since they're so close and plenty of models have something around this time frame. Given that its within 6 to 7 days now its certainly a lot more possible than anything else we've seen so far.

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Foothills? Is there a legititament chance of the south east seeing snow from on of these lows?

I'd say watch Friday through Sunday period. Either the southwest low gets ejected east or a new s/w dives in , or both could get sheared to south with no development. There is a chance though, about all you can say right now. Pattern changes are notoriously hard for models to get right, atleast they're keeping 2 major ridges, but the details between them are hard to know right now.

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I've seen this show before. No way that trough remains that flat/positive.. This baby is coming back

Very possible. All models have the Alaskan vortex getting booted, the question is how much shortwave ridging develops over the pacific northwest when that happens, which determines how much the northern rockies/Plains wave can dive, which determines whether or not it picks up the Texas wave. And where that wave is at the time is still a guess. If all the pieces of the puzzle snap together perfectly, a bomb would go off in the western Gulf.

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I'd say watch Friday through Sunday period. Either the southwest low gets ejected east or a new s/w dives in , or both could get sheared to south with no development. There is a chance though, about all you can say right now. Pattern changes are notoriously hard for models to get right, atleast they're keeping 2 major ridges, but the details between them are hard to know right now.

Just wish they'd be shown wrapping up in the near term, instead of getting weaker :) Todays showers are verifying for mby, in that they are missing as the gfs has suggested for a number of days now, lol. I'm hoping for great things Mon on, but I'm not holding my breath for the big rain storm that was showing a few days back, by this evenings look. T

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I know we have been getting some good Gulf Low's the past 2 winters but we are due for one that really tries bombs out in the Gulf. Given the amplified pattern, this may be the year for something special coming out of the GOM.

You don't really want a low to bomb out when it's in the gulf unless you're in the mid south like tenn.. I'm not sure I've ever seen one "bomb" out that low in latitude anyway. Not to mention that qpf that is lost from those blasted thunder boomers. I wanna see her bomb off Hat at about 956

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