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Pattern February 2024

Agreed. All it would take -- which is more likely than not IMO -- would be for northern stream energy to come in stronger than modeled (which is very common in this configuration at this lead time dealing with northern stream energy from sparsely monitored regions of Canada) to blow this thing up.
ecmwf-ensemble-avg-namer-vort500_z500-1706443200-1707091200-1707091200-40.gif
 
Yeah I’ll take my chances w this IMG_6417.gif
When it really blows up off the Carolina coast it yanks that cold air down the east side of the mountains. I’d venture to say we’d want to get this thing ramped up and going a bit sooner than the euro showed this afternoon?IMG_6415.jpeg
 
Looking past our storm chance, pretty nice sequence here on the Weeklies from Feb 11 to Feb 23. Enlarging low latitude Aleutian Low anomalies lead to southern stream running underneath amplifying Western North America ridging. Would like to see more low pressure off the NE coast, but pretty nice overall. Coldest anomalies in the N Hemisphere located in the eastern 1/2 of the U.S. Feb 14-21 (2nd image)

Jan 28 Euro Wk 500.gif

Jan 28  Euro Wk 850.png
 
Yeah I’ll take my chances w this View attachment 143907
When it really blows up off the Carolina coast it yanks that cold air down the east side of the mountains. I’d venture to say we’d want to get this thing ramped up and going a bit sooner than the euro showed this afternoon?View attachment 143908
A little bit sooner wouldn’t hurt, but even still the EURO has a 996mb low just off SAV that deepens to 992 just off CHS six hours later and moves NE from there. Precip never gets north of HWY 9 in SC or west of HWY 17 in NC, and I simply don’t buy that. A deepening low taking that track should have a precip field at least back to the NC Foothills and SC upstate
 
A little bit sooner wouldn’t hurt, but even still the EURO has a 996mb low just off SAV that deepens to 992 just off CHS six hours later and moves NE from there. Precip never gets north of HWY 9 in SC or west of HWY 17 in NC, and I simply don’t buy that. A deepening low taking that track should have a precip field at least back to the NC Foothills and SC upstate
I thought the Euro was known for underdoing how far the precip expands in these kind of setups.
 
I thought the Euro was known for underdoing how far the precip expands in these kind of setups.
Just off memory it’s definitely done that at least a few times I can remember. In the 1/3/2018 storm, it never brought moisture back west of I-95 until within 12 hours of the storm. Then the 1/21-22/2022 storm it was the last model to bring snow back into the Piedmont and Foothills
 
Interesting tweet from DT. I definitely don’t think the mid-Atlantic is out, but I’m not sure this is going to have a Tennessee valley low.

⬅️WORKING HYPOTHESIS so if we accept the idea that the northern Jet Stream is overdone then the southern LOW is not along the Gulf Coast on FEB 4-5 . It will be back in the Tennessee Valley and the big snowstorm threat is still alive. ◀️
 
Precip fields and amounts are a bit much at this range. Models still trying to tie down the track. We have a storm though so that's good.
I agree. Also I would say that the last thing anyone in the Carolinas needs to be worried about right is it being too suppressed. That’s a very strong and active STJ and I would fully expect that even with a stronger push from the northern stream, there will certainly be some NW trends in the last several days.
 
Interesting tweet from DT. I definitely don’t think the mid-Atlantic is out, but I’m not sure this is going to have a Tennessee valley low.

⬅️WORKING HYPOTHESIS so if we accept the idea that the northern Jet Stream is overdone then the southern LOW is not along the Gulf Coast on FEB 4-5 . It will be back in the Tennessee Valley and the big snowstorm threat is still alive. ◀️
Here’s the thing… if he’s correct then this will be a much different looking storm that could still work for the western/central NC and SC upstate. It would be a Miller B storm with a transfer to off the SC coast because I do think that strong CAD is going to be there.
 
12z Spire shows the factor that we need to get right more than anything else IMO...that is, cold air that doesn't move south quick enough. The amplifying central Canada ridge and 50/50 low dropping south need do their thing and get the cold air in early

View attachment 143913
It was reallly close to being amazing though haha.
spire-forecast-basic-namer-z500_norm_anom-1706443200-1707091200-1707177600-40.gif

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Low still in the gulf
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IMG_8062.jpeg
Essentially what you want for this system to work is for the center of the energy to somewhere in that blue circle. Right now it’s just too far south for anything to happen. The track of the system should move somewhat SE because of the Canadian Ridge overtop and suppressive NE energy not allowing it to move North. Keep that energy in the NE in that same spot.
 
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