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Wintry January 21-23 2025

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For comparison’s sake, the gfs trend. It’s just not as cold. Gives me even more pause about the cmc given its cold notoriety
On the last one, the slowing trend of precip arrival affected SC a bit. I need to reiterate that the GFS whiffed completely too warm on our in situ setup last Friday by at least 6 to 8 too warm..during the height of it and the off/on sleet didn't cease until after almost 2pm...
 
CMC ensemble remains stable.
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If the GEM and its ensembles ultimately score this one right ... it will be my go to model on highly anomalous arctic outbreaks with upglide/FGEN, overrunning setups ... period.

This level of consistency rivals what the Feb 12th 2010 event the King EURO did on the Southern Slider widespread snow event then.
 
On the last one, the slowing trend of precip arrival affected SC a bit. I need to reiterate that the GFS whiffed completely too warm on our in situ setup last Friday by at least 6 to 8 too warm..during the height of it and the off/on sleet didn't cease until after almost 2pm...
gfs is upwards of 12 degrees warmer than the euro, Canadian, and icon at 18z tue over ga/sc. Even 5 or 6 warmer than the uk. Something is very screwy with its surface temps

Edit to add gfs is just warmer period in the low levels with 925mb temps 4 or 5c warmer. Clearlerly an outlier
 
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Home Run Sport GIF by MLB
 
So tonight so far

- GFS about same overall still in same overall camp as CMC
GFS Ensembles - Uptick overall and to N and W
- CMC steady as shs goes another big run
- Euro come roaring back to get in line with CMC

-UKMET slight improvements bring closer to coast

Listen its very exciting because if these models this weekend can settle on track like CMC is putting on and with these setups there being a chance for beefy precip field to NW then this very well could be one of the bigger storms in past 20 years
 
Starting to tell what makes or breaks a run. Noticed immediately on the euro that this area of troughing was more bent back towards the pac vort. The more you do that, the more you load up the trough and slow the northern stream down. Important to note that this trend begun at 18z and is a trend occuring as early as D 1.5… IMG_4202.jpegIMG_4199.gif
 
Starting to tell what makes or breaks a run. Noticed immediately on the euro that this area of troughing was more bent back towards the pac vort. The more you do that, the more you load up the trough and slow the northern stream down. Important to note that this trend begun at 18z and is a trend occuring as early as D 1.5… View attachment 164907View attachment 164908
I've definitely noticed this on the CMC and RGEM also.
 
Starting to tell what makes or breaks a run. Noticed immediately on the euro that this area of troughing was more bent back towards the pac vort. The more you do that, the more you load up the trough and slow the northern stream down. Important to note that this trend begun at 18z and is a trend occuring as early as D 1.5… View attachment 164907View attachment 164908
Looks like it's even showing up in the EPS.
ecmwf-ensemble-avg-namer-vort500_z500-1737158400-1737309600-1737309600-20.gif
 

Thanks man! Folks…I gotta say small changes in position, structure, strength of energy upstream make a big difference and can pay big dividends downstream. The Euro is a great example of that now. NWS offices in the SE are probably spitting there coffee out right now over this new Euro data. This option is one of a few on the table. Let’s hope this is our correct solution.


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Thanks man! Folks…I gotta say small changes in position, structure, strength of energy upstream make a big difference and can pay big dividends downstream. The Euro is a great example of that now. NWS offices in the SE are probably spitting there coffee out right now over this new Euro data. This option is one of a few on the table. Let’s hope this is our correct solution.


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EPS is strongly in support of the op, that's for sure. Whatever got ingested in the 00z runs has brought about a ton of consensus. These individual panels coming in are a sight to behold.
 
Thanks man! Folks…I gotta say small changes in position, structure, strength of energy upstream make a big difference and can pay big dividends downstream. The Euro is a great example of that now. NWS offices in the SE are probably spitting there coffee out right now over this new Euro data. This option is one of a few on the table. Let’s hope this is our correct solution.


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I wouldn’t expect much change NWS wise unless it does this 3-4 straight runs. (I don’t blame them) 24hrs is a Trending


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