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January 2023 Obs/Discussion


Torch Tiger
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One thing that is great to see (and just using a single timestamp to illustrate) is how the GFS finally signals some changes to the orientation and structure of the jet across and east of Asia. We lose the Nino-esq jet extension and get a more poleward jet. Downstream we also see wave breaking shifted west 20-30° which favors higher potential for an evolving ridge across the West and subsequent trough across the east

image.thumb.png.b1c33333b4629576ba62ef34be4131ff.png

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It’s a bit rare for the same hemispheric space to wind up two monsters in such spacial-temporal contention like that, though. Takes a lot of mechanical power and that’s usually found around index disruption events. 

We still don’t have this latter aspect involved in the 12-16th period of interest, either.  Ensemble behavior should be more heavily reliant .. 

Will be interesting to see what emerges out of future guidance - for analysis … not d-drip codependency issues. Lol. J/k 

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Not too go all Georgie here, but if this signal really holds and we are flirting with a low coming up the coast, with how warm the SST's are the amount of moisture inflow would be through the roof. With this you also get nervous for any track along the coast without locking in colder air. 

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Just now, weatherwiz said:

Not too go all Georgie here, but if this signal really holds and we are flirting with a low coming up the coast, with how warm the SST's are the amount of moisture inflow would be through the roof. With this you also get nervous for any track along the coast without locking in colder air. 

Will it be progressive or do we have any timely “blocking”

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3 minutes ago, STILL N OF PIKE said:

Will it be progressive or do we have any timely “blocking”

Won't have blocking in the form of NAO blocking, but per the EPS we would be dealing with a high pressure to the north so something to watch. Even this far out though that detail can be iffy. One thing of note is the NAO looks to be trending more negative around this timeframe which would indicate higher heights (higher pressure) building into the NAO domain which could support a "blocking" potential. 

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52 minutes ago, ORH_wxman said:

That was super close to being an epic solution....we want to see more northern stream injection of energy i think on future runs which will help the southern stream not bury itself too far south before trying to turn the corner....we want a bit more of a phase I think.

But 9+ days out...hopefully it looks good 4 days from now.

I'm content with this right now. Pieces are there to make that weekend a point of future meteorological reference for many years to come.

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Here's the individual members as it makes the closest pass to the benchmark....we're a long ways out so this doesn't mean a whole lot yet. Unfortunately, I feel like it has to keep being said about D9 progs lest you be accused of implying these are going to verify verbatim (which is kind of impossible when we're posting an ensemble spread....but logic never got in the way of a good internet meme argument).

 

 

Jan5_12zEPS234.png

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26 minutes ago, weatherwiz said:

Won't have blocking in the form of NAO blocking, but per the EPS we would be dealing with a high pressure to the north so something to watch. Even this far out though that detail can be iffy. One thing of note is the NAO looks to be trending more negative around this timeframe which would indicate higher heights (higher pressure) building into the NAO domain which could support a "blocking" potential. 

50/50 low/confluence might be in place ..no? 

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12 minutes ago, WinterWolf said:

50/50 low/confluence might be in place ..no? 

Yeah confluence for sure would be a huge player in this. but we gotta keep in mind that while confluence can be our friend, it can also be our enemy. 

But as this stage...looking at the individual members Will posted when its close to the benchmark, all we can really take in right now is that there is potential for substantial cylogenesis off the coast. we hope this signal persists until we get close enough to pick out details.

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9 minutes ago, weatherwiz said:

Yeah confluence for sure would be a huge player in this. but we gotta keep in mind that while confluence can be our friend, it can also be our enemy. 

But as this stage...looking at the individual members Will posted when its close to the benchmark, all we can really take in right now is that there is potential for substantial cylogenesis off the coast. we hope this signal persists until we get close enough to pick out details.

Well to be fair, so could the NAO…too much of one/a good thing is never good. 
 

Agreed though. 

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23 minutes ago, ORH_wxman said:

Here's the individual members as it makes the closest pass to the benchmark....we're a long ways out so this doesn't mean a whole lot yet. Unfortunately, I feel like it has to keep being said about D9 progs lest you be accused of implying these are going to verify verbatim (which is kind of impossible when we're posting an ensemble spread....but logic never got in the way of a good internet meme argument).

 

 

Jan5_12zEPS234.png

965 mb 20 mi SE of ACK

 

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1 minute ago, WinterWolf said:

Well to be fair, so could the NAO…too much of one/a good thing is never good. 
 

Agreed though. 

This is going to be a fun week of tracking. Hopefully people just keep in check though and understand the caveats that will apply and don't live-and-die by each subsequent model run. Models struggle big time with confluence so with that alone it won't be surprising to see wild changes from OP run to OP run. But until we get inside D5 the only thing that will matter is the evolution of the pattern. SLP tracks, snowfall maps mean squat. Just b/c an OP run may show no storm verbatim won't mean the storm is "lost" and just b/c an OP run may show a Georgie orgie blizzard, doesn't mean it's a lock. 

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Weeklies actually look decent for late Jan and early Feb….but we know the caveats. It goes more toward a classic La Niña pattern but with a pretty strong AK ridge which is usually good in February…longer wavelengths tend to make it less likely you get the AK trough folding back and digging in Cabo San Lucas.  

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13 minutes ago, Colonel Badger said:

That's been the kiss of death recently.

To be fair there WAS a huge storm and many records (elsewhere).

I trust him to say what needs to be said (all of it) at the right time, albeit with perhaps better timing this go around.  He was 2 cycles early on the last deal IIRC.

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