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2/9 - 2/10 light snow observations


Zelocita Weather

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Euro has done quite poorly with northern stream energy this year. GFS has done better and likely has the best idea going forward but we probably won't know until inside 24 with this.

Exactly what I was thinking the Euro may be dropping the ball again because we are back to a northern stream system

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Overnight, the GFS improved its consistency, maintaining its scenario for a light to moderate qpf event. This may be a sign that the GFS is now keying in on a single shortwave. The next thing to watch is whether the other guidance moves toward the GFS. It should be noted that the GFS has often outperformed the ECMWF with these northern branch systems this winter, so the probability of a light snowfall event and perhaps a moderate one is probably higher than the probability of little or no snow with the Sunday night/Monday timeframe favored.

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Overnight, the GFS improved its consistency, maintaining its scenario for a light to moderate qpf event. This may be a sign that the GFS is now keying in on a single shortwave. The next thing to watch is whether the other guidance moves toward the GFS. It should be noted that the GFS has often outperformed the ECMWF with these northern branch systems this winter, so the probability of a light snowfall event and perhaps a moderate one is probably higher than the probability of little or no snow with the Sunday night/Monday timeframe favored.

6Z GFS ENS MEAN shows about 0.25 region wide and has shown that the last few runs so thats the way to go right now - 2-4 inches - Timing is key here because if it happens late sunday night through monday morning it will be a high impact event for obvious reasons

http://www.tropicaltidbits.com/analysis/models/gfs-ens/2014020806/gfs-ens_apcpn_us_10.png

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Duno the GFS  has been consistent . The NAM  has a little more precip area wide  at 12z than at 6z .

Maybe catching up.

I agree the last couple of storms the NAM was playing catch up to the other more robust models BUT was able to deliver one of its over the top runs just in time - so I am also going with the GFS and SREFS - The GFS has its ENS MEAN support - also many storms have over performed this winter so far - so why not expect this one too

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I agree the last couple of storms the NAM was playing catch up to the other more robust models BUT was able to deliver one of its over the top runs just in time - so I am also going with the GFS and SREFS - The GFS has its ENS MEAN support - also many storms have over performed this winter so far - so why not expect this one too

I like the look of .25 at 15 to 1 . IMO

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I agree the last couple of storms the NAM was playing catch up to the other more robust models BUT was able to deliver one of its over the top runs just in time - so I am also going with the GFS and SREFS - The GFS has its ENS MEAN support

 

Minus the ARW members which are initialized off the GFS, the rest of the SREF members are similar to the NAM.

So today into tomorrow will find out if it's the 1-2" non GFS guidance or the more robust  GFS 2-4"

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Minus the ARW members which are initialized off the GFS, the rest of the members are similar to the NAM.

So today into tomorrow will find out if its the 1-2" non GFS guidance or the more robust  GFS 2-4"

I just like that the NAM though feeble , was less feeble than at 6z , so it may be goin in the right direction .

.10   TO .25 is not a huge jump , so guess we will know in 12 - 24 hours .

 

 Lets see if the 4k NAM  is a bit wetter .

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With qpf around  .15-.25 of an inch, and temperatures in the 20s Sunday night; I think a general 1-3 inches area wide is the general outlook for this event.

Minus 10 at 850. Should yield better than 10 to 1. Surface will b in the 20s I like a wide area of 4 imo

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Minus 10 at 850. Should yield better than 10 to 1. Surface will b in the 20s I like a wide area of 4 imo

SREF plumes(9z) are printing out 1-3 inches area wide which goes with the latest gfs run. In the colder areas like the Hudson Valley ratios would be better so in that region 4 inches is possible.

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SREF plumes(9z) are printing out 1-3 inches area wide which goes with the latest gfs run. In the colder areas like the Hudson Valley ratios would be better so in that region 4 inches is possible.

Will b nice to tidy up the landscape

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