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Mid to Long Range Discussion ~ 2024


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If the models show a good look but you just assume everything will be bad 1.)you are most likely right BUT 2.) why are you here?  We all commiserate when things don't work out for us (and they haven't been working out) but if "winter is over" then this forum is of no use to you.  

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If you are basing your predictions on a each model run of the OP GFS, then you might as well just look at your apple weather app.  

The overall pattern over the next two weeks is as good as we can hope for.  At least 2-4 storms rolling through the south and a chance to hook up with some cold air.  The EPS looks the best it has looked this morning.  GEFS coming on board as well.  

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1 hour ago, Met1985 said:

There looks to be potential in the prime of this pattern change. prateptype_cat-imp.us_ma.jpgprateptype_cat-imp.us_ma (1).jpgsn10_acc-imp.us_ma.jpg

Sent from my SM-G998U using Tapatalk
 

That was admittedly a fun run. One of those classic storms where if it’s coming down hard, it’s paste, if it’s not, it’s drizzle. 
 

The pattern change seems to be firm at this point but I do wish we could just see a better signal for an anchoring high over the top. That run had a moderately strong high over the high plains but that’s not typically going to cut it. Of course, too early to parse details about the threat at this point but at least the signal has been there for days. 

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-0Z EPS much wetter than prior runs and thus the most wintry precip of any EPS in the SE

-0Z and 6Z GEFS snowier overall SE largely due to more qpf

-Things seem to be falling into place, which makes sense based on how consistent the big picture has been. MJO progs for mid to late month (weak left side possibly going into COD) continue to be supportive among other factors. But regardless, nothing is even close to being certain.

-As a bonus the fun may very well carry well into March based on the weakening SPV

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 The -AO isn’t quite as strong as it was on yesterday’s GEFS, when it averaged -3.5 for 2/13-20. Today the period averages near -3.0. The chance for a sub -4 daily isn’t as high. Hopefully it won’t trend less negative in the coming days. A -3.0 would still make it the 3rd most negative for the period during El Niño. Also, the PNA prog for the period has risen from yesterday’s +0.5 to today’s +0.8.
 

Strongest -AO El Niño averaged 2/13-20 (lowest daily) out of 25 Ninos since 1952:

1969: -4.8 (-5.1) (PNA: -0.1)

2010: -4.4 (-5.1) (PNA: +0.7)

1978: -2.6 (-4.8) (PNA: +0.8)

1958: -2.5 (-4.0) (PNA: +1.1)

1970: -2.4 (-4.0)

1964: -2.4 (-3.4)

1987: -2.4 (-3.3)

1966: -2.2 (-3.5)

1952: -2.1 (-2.5)

1983: -2.0 (-2.7)

1977: -1.2 (-2.1)

2007: -1.2 (-1.9)

2005: -1.1 (-1.7)

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39 minutes ago, GaWx said:

 The -AO isn’t quite as strong as it was on yesterday’s GEFS, when it averaged -3.5 for 2/13-20. Today the period averages near -3.0. The chance for a sub -4 daily isn’t as high. Hopefully it won’t trend less negative in the coming days. A -3.0 would still make it the 3rd most negative for the period during El Niño. Also, the PNA prog for the period has risen from yesterday’s +0.5 to today’s +0.8.
 

Strongest -AO El Niño averaged 2/13-20 (lowest daily) out of 25 Ninos since 1952:

1969: -4.8 (-5.1) (PNA: -0.1)

2010: -4.4 (-5.1) (PNA: +0.7)

1978: -2.6 (-4.8) (PNA: +0.8)

1958: -2.5 (-4.0) (PNA: +1.1)

1970: -2.4 (-4.0)

1964: -2.4 (-3.4)

1987: -2.4 (-3.3)

1966: -2.2 (-3.5)

1952: -2.1 (-2.5)

1983: -2.0 (-2.7)

1977: -1.2 (-2.1)

2007: -1.2 (-1.9)

2005: -1.1 (-1.7)

Keep that PNA rising and I'm not as stressed about the AO. 

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Latest 12 run averaged CFS ensemble looks quite nippy for early March based on 500 mb heights and actually has lower heights than the 3 weeks preceding it! For example, this shows 554 dm for RDU. That’s actually 6 dm lower than the normal for January! So, the implication based on this forecast is that the first week of March would quite possibly end up BN for January!

IMG_9128.thumb.png.13756cf2629d0da2ef3c26075e6ffa1c.png

 

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2 hours ago, BooneWX said:

That was admittedly a fun run. One of those classic storms where if it’s coming down hard, it’s paste, if it’s not, it’s drizzle. 
 

The pattern change seems to be firm at this point but I do wish we could just see a better signal for an anchoring high over the top. That run had a moderately strong high over the high plains but that’s not typically going to cut it. Of course, too early to parse details about the threat at this point but at least the signal has been there for days. 

GAWX has been posting some exceptional stuff this winter. I'd follow him and the analogs especially this year considering we are in a NINO and it's facts that NIÑOS are back loaded.  

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21 minutes ago, wncsnow said:

Ouch

prateptype_cat-imp.conus.png

That potential storm is well out in fantasy land. I'm waiting on the GEFS for some ideas, though the last few runs of the GEFS haven't had many members with much snowfall in the southeast. Usually the means have been skewed by one or two big snow outputs.

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9 minutes ago, weatherfide said:

That potential storm is well out in fantasy land. I'm waiting on the GEFS for some ideas, though the last few runs of the GEFS haven't had many members with much snowfall in the southeast. Usually the means have been skewed by one or two big snow outputs.

We can't even win in fantasy land

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