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February 2025 Disco/Obs Thread


Torch Tiger
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11 minutes ago, 40/70 Benchmark said:

I realized that the pattern out west looks similar to other failed attempts....I fell for it back in January, and started to here.

That makes sense, I would agree that the setup looks similar to the Jan 11th disaster. For me it’s still worth tracking though, although the probability of actually phasing is low this is a high ceiling setup IF we get one. Hopefully we can get something to break our way in a non ideal setup.

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2 minutes ago, George001 said:

That makes sense, I would agree that the setup looks similar to the Jan 11th disaster. For me it’s still worth tracking though, although the probability of actually phasing is low this is a high ceiling setup IF we get one. Hopefully we can get something to break our way in a non ideal setup.

Yes, Definitely worth tracking.  If something is a miss(on long wave pattern) at 7 days out..all bets are off. But assuming it’s not..then another Miss or nuisance at best. 

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3 hours ago, Typhoon Tip said:

Heights over western N/A are the challenge.  This situation leading and during the 20th needs that component to improve, otherwise this will be another enhanced modeling challenge over the week with both spatial-temporal aspect, and just spacial synoptic interference issues. 

It's a bit frustrating because from what I am seeing, the basal hemisphere is a little less compressed ( less is definitely better! ).  You can see in the 00z 500 mb height cinema of all three, Euro/CMC/GFS, how the SPV fragment really tries to tuck into the S/stream, but because the flow geometry lacks that meridian restoring ( better ridge west --> constructive depth feedback in the east), the situation ends up stretched looking with the triggered cyclone escaping ENE in the CMC/GFS.  The only real difference between the Euro and these misses is the Euro actually gets the thread through the needle's eye on 00z stab.  

But again ... the flow overall is -d(gradient), and so if a ridge were to materialize over the west, that whole downstream situation would be slower/more proficiency compared to these bottle rocket smear troughs of the last month

Very new to meteorology and forecasting, so I could be way off here, but based on the latest NWS Palisades storm discussion (via LOX NWS), I’m not seeing much of a strong western ridge signal that would slow down and organize our storm in the Northeast:
 

Quote
All systems are go for the largest storm of the season. Satellite
shows a well developed storm system with a sfc low (~982 mb)
located a couple hundred miles to the west of the CA/OR border.
There is a well developed warm and cold front with the system both
of which are far enough south to affect all of the fcst area.

Warm frontal rain is currently over the Central Coast. This
steady lgt-ocnl mdt rain will overspread the entire area by dawn
or a hour or two after. By the time the cold front enters the
Central Coast (early afternoon) rainfall totals will be near an
inch and half over the flatter portions and double those amounts
along the coast facing slopes. The warm advection within the
front will lift snow levels to 7500+ ft.

The cold front now looks more dynamic and unstable with a
favorable jet energy and location. This has increased the
likelihood of TSTM just in front of and with the front. The chc
of TSTMs is now 30 percent during the 3 hour period of the cold
front`s influence. The jet is will push the front along a little
faster and this may result in a little less rain than forecast.

 

So from what I can tell, there’s some ridging out west, but not enough to really change the downstream setup for the NE. That might be why CMC/GFS keep showing the storm getting stretched and ejecting too quickly instead of digging in. The Euro seems to handle the SPV-southern stream interaction better, but with the overall -d(gradient) flow, it still looks like another fast-moving, messy system unless something shifts.

Does that sound right? Or is the CA forecast way too far west and early to affect what's going on over here next week? Still trying to get a feel for how these setups evolve. Thanks

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4 minutes ago, superETA said:

Very new to meteorology and forecasting, so I could be way off here, but based on the latest NWS Palisades storm discussion (via LOX NWS), I’m not seeing much of a strong western ridge signal that would slow down and organize our storm in the Northeast:
 

 

So from what I can tell, there’s some ridging out west, but not enough to really change the downstream setup for the NE. That might be why CMC/GFS keep showing the storm getting stretched and ejecting too quickly instead of digging in. The Euro seems to handle the SPV-southern stream interaction better, but with the overall -d(gradient) flow, it still looks like another fast-moving, messy system unless something shifts.

Does that sound right? Or is the CA forecast way too far west and early to affect what's going on over here next week? Still trying to get a feel for how these setups evolve. Thanks

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