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January 24-25: Miracle or Mirage


stormtracker
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19 minutes ago, andyhb said:

The PDII comparisons starting to flash into the picture.

I’m not sold on the PDII comparison quite yet because the QPF progs aren't showing that level of saturation. During PDII, we saw persistent mesoscale banding with radar returns so intense they would have prompted flash flood warnings in the summer.

That setup featured a textbook 'tropical tap' where a deep moisture plume from both the Gulf AND the Atlantic converged. The Water Transport was so off the charts because you had a secondary low off the Carolinas acting as a pump, feeding a SSE-to-NNW moisture flux directly into the cold dome.

Lift was maximized because that 1040mb Arctic High was so anchored, creating a steep vertical 'ramp' for the moisture to climb. We ended up with 2.5 to 3.5 inches of liquid equivalent (QPF) across the board.

Sure we have the 1040 high this time.. but as of now, this current setup looks more like a standard Gulf-dominant system—it lacks that intense Atlantic inflow and the same degree of frontogenesis we saw in '03. It has potential, but the 'firehose' isn't there yet.  Could change.. hopefully it does.  If I remember, PD2 was a 1 foot deal on the inital warnings.. only after it started training we started to see the 18-24 numbers show up in the warnings.

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1 hour ago, SnowenOutThere said:

No, no lets not reshuffle like that. Genuine question is where do you see the north shift coming from? Synoptically I have a hard time seeing how much further it can go north with a solution like the 18z Euro as it has a perfect phase.

Agree and this is got  a huge cold high pressure just about squatting over PA , I’m glad this low has moxie 

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1 minute ago, MDScienceTeacher said:

I’m not sold on the PDII comparison quite yet because the QPF progs aren't showing that level of saturation. During PDII, we saw persistent mesoscale banding with radar returns so intense they would have prompted flash flood warnings in the summer.

That setup featured a textbook 'tropical tap' where a deep moisture plume from both the Gulf AND the Atlantic converged. The Water Transport was so off the charts because you had a secondary low off the Carolinas acting as a pump, feeding a SSE-to-NNW moisture flux directly into the cold dome.

Lift was maximized because that 1040mb Arctic High was so anchored, creating a steep vertical 'ramp' for the moisture to climb. We ended up with 2.5 to 3.5 inches of liquid equivalent (QPF) across the board.

 

Sure we have the 1040 high this time.. but as of now, this current setup looks more like a standard Gulf-dominant system—it lacks that intense Atlantic inflow and the same degree of frontogenesis we saw in '03. It has potential, but the 'firehose' isn't there yet.  Could change.. hopefully it does.  If I remember, PD2 was a 1 foot deal on the inital warnings.. only after it started training we started to see the 18-24 numbers show up in the warnings.

What about DC metro mixing over to sleet then back to snow? Still think this storm will be similar to PDII in that way.

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Just now, bncho said:

Okay, according to some peeps on SouthernWX, they say that the GFS 0z is using extra information about that Baja low. I don't buy it.

I'm pretty sure that won't be included till 12z tomorrow at the very earliest. I wouldn't take the recon into consideration till like wednesday night runs at the earliest.

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1 minute ago, bncho said:

Okay, according to some peeps on SouthernWX, they say that the GFS 0z is using extra information about that Baja low. I don't buy it.

Huh? They also don’t want it to move north so think it’s wrong lol

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Well, with the north trends (more of a SW-NE oriented heavy snow axis, closer to climo), we know that means the MIX area gets close. This is a pretty picture now, but we're still 96+ hours away from the onset of the precip. LOVE the northern trends, yes, but for the metro area now would be a good time for the trends to STOP. I don't think they will though, lol. Oh, don't get me wrong, surface temps will stay in the 20s. But those 750-700 mb temps may flirt with 0C with a mix or period of sleet all the way up to Southern MD...maybe even Rte 50 for a little bit. Wouldn't surprise me. Still a hit, oh boy a big hit, but I don't think the northern trends are done either. 

 

 

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6 minutes ago, MillvilleWx said:

1043mb reinforcing HP over Quebec. I might shed a tear 

My feelings exactly. I am blasting every track that ever reminded me of snow, including Gen Z tracks. Everything from 1964 clear to 2026.

All I have EVER wanted, is for this sub to get completely, utterly demolished by snow and cold. That happens, everything is all good for me. I'll be cheering you all on!

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