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January Medium/Long Range: A snowy January ahead?


mappy
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1 minute ago, Terpeast said:

Unlike the last storm, there is nothing to prevent it from trending NW as psu alluded to the other day.

hardly any blocking over greenland, s/w energy hanging back west. That PV is pressing south, but one tiny shift the other way, the track is coming north.

IMG_7138.thumb.png.70be3459b5044a64e8c75e62ca34bd89.png

And you want a proverbial reshuffle? Careful now… you might get a SE ridge with that.

SE ridge looks inevitable, but doesn't necessarily have to mean no snow. I actually am pretty optimistic that something breaks in our favor in January when the cold is around or February with the likelihood of being at or AN precip. Going to need really bad luck to miss everything substantial imho.

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49 minutes ago, mitchnick said:

Looks like EuroAI I just worked up my nerve to look at (lol) actually looks to bring a northern stream lobe down and pulls up some precip from the system next week. That's a new twist. Interestingly, the southern storm is rain and not snow. Hmmm

Stay off the AI crack son. 

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17 minutes ago, mitchnick said:

Never heard of him. I was focused on the euro snowfall map.

back in the day we used to have the Weenie of the year award. He would be in the hall of fame

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Damn, woke up to 100+ posts and thought something good must’ve happened overnight… which it did, yet all the posts here are kinda bad? lol. 
 

6z EURO and GFS both looked better for Sunday, and the CMC is leading the way with the “big southern storm” that still has a lot of time to get resolved. I know PSU has decided we don’t necessarily want storms to our south at strange, but I’ll take the GFS’s look at day 8.
 

IMG_2567.thumb.png.3d7df4755f0a236235b11db765457454.png

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23 minutes ago, NorthArlington101 said:

Damn, woke up to 100+ posts and thought something good must’ve happened overnight… which it did, yet all the posts here are kinda bad? lol. 
 

6z EURO and GFS both looked better for Sunday, and the CMC is leading the way with the “big southern storm” that still has a lot of time to get resolved. I know PSU has decided we don’t necessarily want storms to our south at strange, but I’ll take the GFS’s look at day 8.
 

IMG_2567.thumb.png.3d7df4755f0a236235b11db765457454.png

This checks out... Atmospheric memory.

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27 minutes ago, NorthArlington101 said:

Damn, woke up to 100+ posts and thought something good must’ve happened overnight… which it did, yet all the posts here are kinda bad? lol. 
 

6z EURO and GFS both looked better for Sunday, and the CMC is leading the way with the “big southern storm” that still has a lot of time to get resolved. I know PSU has decided we don’t necessarily want storms to our south at strange, but I’ll take the GFS’s look at day 8.
 

IMG_2567.thumb.png.3d7df4755f0a236235b11db765457454.png

It depends... I don't think as a blanket rule we just want something to our south anymore, and that was a typical bias across almost all guidance 20 years ago.  Especially the GFS.  Now it's much more nuanced.  In a blocking regime, frankly, storms have been more likely to trend south recently.  But each pattern is different and each synoptic situation is different.  In the coming pattern it is a lot more likely that things could trend north significantly if the models are overdoing the amplitude of the TPV or wrong in the location of features at range.  Of course if a NS wave were to come along right over the top it could squash it, like that storm in March 2014 that was supposed to hit PA then came south because of a wave over the top.  But even in a progressive wave pattern it feels recently like the errors are more split between north and south...they are just larger in a non blocking regime since there is less locking in the track of the waves. 

I will say this though...in a progressive wave pattern more amplified trends mean north...and I like being on the side of getting to root for a bigger more amplified storm.  When a system is north of you, you're kinda left rooting for the storm to be weaker and more pathetic, thats no fun lol.  

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The models are less consistent in their errors, but that is a good thing.  It's because they are better.  So there is no one obvious automatic error anymore.  The errors are based on smaller mistakes they may be making specific to each synoptic setup.  But we know at day 7 or 10 there is likely to be an error.  More so in some patterns than others.  So we have to ask "what is the most likely error being made here" by each specific model in each specific situation.  

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37 minutes ago, NorthArlington101 said:

Damn, woke up to 100+ posts and thought something good must’ve happened overnight… which it did, yet all the posts here are kinda bad? lol. 
 

6z EURO and GFS both looked better for Sunday, and the CMC is leading the way with the “big southern storm” that still has a lot of time to get resolved. I know PSU has decided we don’t necessarily want storms to our south at strange, but I’ll take the GFS’s look at day 8.
 

IMG_2567.thumb.png.3d7df4755f0a236235b11db765457454.png

It's not bad..and we have time.  It's just annoying at the moment.

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1 hour ago, mitchnick said:

Even with the 6z run hot off the presses showing precip being really increased for Sunday?

That wave strikes me as a 3-6" type thing wherever it ends up.  Maybe slightly more in the jack zone.  Similar to a lot of those boundary waves that popped up at the last minute in 2014 and 2015.  

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53 minutes ago, NorthArlington101 said:

Damn, woke up to 100+ posts and thought something good must’ve happened overnight… which it did, yet all the posts here are kinda bad? lol. 
 

6z EURO and GFS both looked better for Sunday, and the CMC is leading the way with the “big southern storm” that still has a lot of time to get resolved. I know PSU has decided we don’t necessarily want storms to our south at strange, but I’ll take the GFS’s look at day 8.
 

IMG_2567.thumb.png.3d7df4755f0a236235b11db765457454.png

Looking at incoming pattern that’s coming north pretty confident not really caring about what the models show until 0z Thursday.  I think Euro too extreme with NW push comes southeast and gfs comes NW to meet in the middle and hit for us. 

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Looking way out, I continue to see signs the pattern is not progressing to the typical Nina Feb hellscape I expected.  

Actually...if the 3 features I marked here are correct...that trough will end up more southeast than it is on guidance right now.  

ecmwf-ensemble-avg-nhemi-z500_anom-8108800.thumb.png.b7b0d14aca1071958a47dabe82fcaff5.png

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2 minutes ago, psuhoffman said:

That wave strikes me as a 3-6" type thing wherever it ends up.  Maybe slightly more in the jack zone.  Similar to a lot of those boundary waves that popped up at the last minute in 2014 and 2015.  

Though it's early, this thing has favored our area once there was a consensus of a wave east of the mts (recall the Gfs and maybe others initially had a storm on the front heading for the Lakes.) I "think" it will favor us in the end, but with how much remains the question. But if it doesn't favor us, any place but central VA and SBY. Reminders of the debacle winter of 72/73 cannot be shaken. Lol

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1 hour ago, Terpeast said:

Unlike the last storm, there is nothing to prevent it from trending NW as psu alluded to the other day.

hardly any blocking over greenland, s/w energy hanging back west. That PV is pressing south, but one tiny shift the other way, the track is coming north.

IMG_7138.thumb.png.70be3459b5044a64e8c75e62ca34bd89.png

And you want a proverbial reshuffle? Careful now… you might get a SE ridge with that.

Haha.. I drafted and then deleted almost the exact post this morning. .  I wont be so shy next time.   I also think the position of trough is important also WRT suppression vs Coastal Track.  As depicted above, one would think that a coastal low is definitely favored over a southern/ suppressed track.  However, if you go forward 2 days, the center of the trough moves east by a couple hundred miles and the isobars are more WSW - ENE oriented over our area.  I think that is why dont see a storm on the Euro for the 22nd 00z and a southern track on the GFS .. but as you said, the overall synoptic pattern does not indicate suppression and there are chances the second wave comes north as we move closer to the event.

 

image.thumb.png.19e96acde1226ba7fa552845c32980bb.png

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