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February Medium/Long Range Thread


stormtracker
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1 minute ago, winter_warlock said:

If gfs shows  what icon showed im probably  gonna stay away  from this forum for a few days. Too nerve-wracking  lol

If this one totally fails it’s almost spring anyway.  Another or week or two and if nothing pops up we can start looking ahead to the first 70 degree days. 

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1 minute ago, SomeguyfromTakomaPark said:

If this one totally fails it’s almost spring anyway.  Another or week or two and if nothing pops up we can start looking ahead to the first 70 degree days. 

This winter of decent snow but constant missed potential but mostly wall to wall cold may result in speeding up my plan to move to Florida 

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2 minutes ago, dailylurker said:

Yup. The dispensary doesn't give it away for free. They also don't use would class genetics and the best organic feed money can buy lol

I only use gummies anyway. Don’t smoke. Anywho let’s watch this gfs disaster unfold. 

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At 45 still not seeing any big changes to TPV interactions, and while the heights are higher behind it they also seem a little further back, so not sure if it's gonna feel it. Not really digging any deeper. Energy maybe is a bit wider west to east.

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3 hours ago, Bob Chill said:

Still a day or 2 away from the best range but here's the analogs from the 0z run. Not bad not great. Hasn't wavered much. 

Screenshot_20250216_063554_Chrome.thumb.jpg.6e3368d340b21a9353b4f93f5b0ae54e.jpg

 

 

Once inside of d3, all ops look mostly the same so analogs become more accurate. 

 

3 hours ago, CAPE said:

6z EPS

1740117600-177iCE3Vd6k.png

I’m gonna die on this hill, I went through every single analog on that list, most of them I’d already identified yesterday and looked at, and not a single is even close to the h5 look we have this week.  They must be using the surface heavily to identify these. 
 

Again I’ll use the GFS, euro is even more amplified. 
IMG_7371.thumb.gif.99980a6377d464e073c8939703a201a3.gif

now here are some new analogs on that list that were big snows to our southeast, but look at the h5 track, way south of this week and a way more suppressive look up top. The differences at h7 are even worse. I’ve never seen a snow for southeast Va with a h7 low over PA. 
IMG_7368.thumb.gif.b5e739a90e361a65801284ac9356524d.gif

IMG_7369.thumb.gif.40e6cc1b34ea13412c4d452cebe404eb.gif

Which brings me to the best example at the mid and upper levels to this week on that analog list

IMG_7370.thumb.gif.21274064ef95bd809a7ab075d3467e7a.gif

it’s not a good match but I said “best” match.  The h5 track is at least similar but way way less amplifies.  The result was a weak wave south that didn’t really give anyone much snow.

Thats a believable outcome.  But I still cannot find a single example of a h5 and h7 setup even close to this week they resulted in a southeast VA or Delmarva snowstorm.   I ran the composite for all 8” snows for Richmond and Salisbury and the h5 min anomaly was centered on Atlanta.  This week it’s centered around KY.  That doesn’t even match the DC snow comp best, it’s the closest to the NYC storm comp.  
 

Something has to give here.  Unless we really are going to see something that’s never happened before I see 3 possibilities.  From least to most likely. 
 

1)  the guidance is going to adjust at h5/h7 way way south with those features (from a OH to PA pass to a KY to southern VA pass) and then a big snow centered down there makes sense.  This is really unlikely given the degree of chance that requires.

2) Guidance is going to trend significantly de-amplified at H5 and there will be a more modest snowstorm to the southeast.  This is slightly more possible.  If the h5 ends up stretched out and not closed off up top a weaker but not totally insignificant wave can slide east under it and drop a 6-12” type snow to our south.  That’s still a significant h5 change for this range but it as crazy as what’s needed to match the 10”+ southeast snow analogs  

3) the surface adjusts.  This is by far the most likely imo.  The issue here is the surface could adjust in two ways.  One it could adjust to a snow further north, like some of the ones on that analog list that actually do fit the h5 better.  But I’m wondering given the seasonal trends and Nina of the most likely adjustment is for the surface to de-amplify into a weaker wave that becomes a minor (say 3-6”) type snow somewhere close to where the max is now.  There are examples of very weak waves failing to get “captured” by a similar h5 or simply being too weak to gain latitude in this type flow and then hitting places like SE VA.  So if this were to adjust weaker then the surface track makes sense  

What I can’t see is the mid and upper level pattern projected right now across guidance producing a 12”+ snow for SE VA or the Delmarva.  Just like we look at the pattern comps for us to identify when that kind of storm is coming, this doesn’t fit the pattern comps for a big snow there.  It’s not even close.  

 

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Okay at 57, maybe some positive changes. Higher heights out front, may have more room to turn. The TPV has more out west, seems better oriented to help us turn, even it it's not tied up enough to phase. Energy itself doesn't look much different.

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I think we've got high pressure in the wrong spot for this one.  It's chasing this system out instead of helping to slow things down and reel in moisture off the Atlantic.  As is, we might want an amped up southern stream and just hope we get clipped by the initial overrunning.

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