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1/28 - 1/30 Storm Thread II


burgertime

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incredible agreement on the individual ENS members WRT the westward shift.

 

 

OMG.. the individuals are amazing.  Several have a neutral to neg tilted trough axis and really pumping up the sfc reflection.

 

Here's one of many which are total eye candy

 

sAopXiZ.gif

13AvqAo.gif

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Under a winter storm watch for the Pensacola/Mobile area from Tuesday morning until Wed morning.   Not something you see very often down here along the gulf coast.  Hopefully everybody gets to see a few flakes here and it doesn't cause any problems. 

 

I was wondering about that when I was reading about the WSW for Houston/Galveston.  On average, how often does IAH or MSY or even Pensacola have a WSW?

 

Been reading through the posts from this afternoon -- can someone give us a summary of the trends (westward, south, east?)  

 

Thanks!

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incredible agreement on the individual ENS members WRT the westward shift.

only 1 member has no snow for the 85 corridor with one more showing 85 being the cutoff. . what a change from all the earlier runs. let's just hope it's not a fluke and we have the other models come on board to support them.

 

f96.gif

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Something we need to accept is that the next runs of the GFS will probably not look as good this one. This really is a weenie run to the fullest. I suppose it could still get better for folks in the west but generally this is it. So at this point, we really should not be looking at snow totals and stay focused on where the storm is going and where the precip fields setup. I would say if the next run shows .75 for RDU(over 1" now) I would consider that a win. **but will have to admit it was exciting to see this run.  

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Something we need to accept is that the next runs of the GFS will probably not look as good this one. This really is a weenie run to the fullest. I suppose it could still get better for folks in the west but generally this is it. So at this point, we really should not be looking at snow totals and stay focused on where the storm is going and where the precip fields setup. I would say if the next run shows .75 for RDU(over 1" now) I would consider that a win. **but will have to admit it was exciting to see this run.  

 

Anything over 0.5" of precip would be a huge win for us, we are within 48 hours of the event starting in the Carolina's, there isn't a whole of time left, all the important changes of the modeling happens within 36 hours starting at 0z run tonight, I would expect 0z runs tonight to be a lot better aligned and definitely by 12z tomorrow.

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Something we need to accept is that the next runs of the GFS will probably not look as good this one. This really is a weenie run to the fullest. I suppose it could still get better for folks in the west but generally this is it. So at this point, we really should not be looking at snow totals and stay focused on where the storm is going and where the precip fields setup. I would say if the next run shows .75 for RDU(over 1" now) I would consider that a win. **but will have to admit it was exciting to see this run.  

totally agree. It's very easy to get sucked in to a model run that finally shows a huge hit but it's only one run and it's the 18z run at that with no support from the canadian, euro, uk, and to a lesser extent the nam. This is why I'm not allowing myself to get too worked up over it. The support from the gfs ensembles is encouraging but it is still ran off the gfs and sometimes they can go off the cliff with the operational run.  Now if the 0z runs, including the ensembles, come in still with a big hit or trending that way, then it will be hard not to get excited.

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totally agree. It's very easy to get sucked in to a model run that finally shows a huge hit but it's only one run and it's the 18z run at that with no support from the canadian, euro, uk, and to a lesser extent the nam. This is why I'm not allowing myself to get too worked up over it. The support from the gfs ensembles is encouraging but it is still ran off the gfs and sometimes they can go off the cliff with the operational run.  Now if the 0z runs, including the ensembles, come in still with a big hit or trending that way, then it will be hard not to get excited.

Am I correct to assume that someone has checked to see the model initialized properly and there was no missing data?

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Snow Goose had alluded to the fact that in is experience this year the EURO would shift more N/W within 36 hours. Again, that's this season. Could it be the GFS is catching onto something with the ingest of new data? (I am not sure new data went into the 18Z.) The 0Z Euro will be "must see tv" for us tonight in north GA. If the trends are there, I am just going to start watching WV loops and watch the trends unfold. The players are almost all the way on the field.

Greg, I just went from .07 to .67 so something has changed, lol.  I'll take half that qpf and back out the door dancing :)  I knew it was coming north, but I won't believe my childhood dreams are finally coming true just yet.  I will admit I have the Moles thrumming away in the underground layer, and they are promising me I won't be disappointed!!  We'll see what the 0z has to say before I get out the snowflake volleyball, lol.  Good times, as long as one remembers nature is mean, and can take it all away, and laugh while tasting your tears :)  T

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Anything over 0.5" of precip would be a huge win for us, we are within 48 hours of the event starting in the Carolina's, there isn't a whole of time left, all the important changes of the modeling happens within 36 hours starting at 0z run tonight, I would expect 0z runs tonight to be a lot better aligned and definitely by 12z tomorrow.

The take away from the gfs 18z really is the fact it did not go drier/weaker. Agreed not getting caught up in the particulars as much as the fact the spread of moisture may not be totally determined just yet. The 00z runs are going to tell us which holds more truth.

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Wouldn't there be mixing issues for the central portions of the Carolina's? If I'm interpreting maps correctly that is. Not too informed on how to read/decipher 850's in a situation like this and what there impact could mean.

 

Looking at the 18z GFS, mainly SE NC and central/eastern SC would see some icy conditions.  A good initial measure for ice would be 850mb temps are above zero and sfc temp below zero.  See the map below.  The thick line is the 850mb temp freezing line and the line blue line is the surface freezing line:

 

8rMoKz9.gif

 

You can still get snow in above freezing situations depending on dynamic factors, wetbulb temps

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totally agree. It's very easy to get sucked in to a model run that finally shows a huge hit but it's only one run and it's the 18z run at that with no support from the canadian, euro, uk, and to a lesser extent the nam. This is why I'm not allowing myself to get too worked up over it. The support from the gfs ensembles is encouraging but it is still ran off the gfs and sometimes they can go off the cliff with the operational run.  Now if the 0z runs, including the ensembles, come in still with a big hit or trending that way, then it will be hard not to get excited.

 

Definitely agree

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totally agree. It's very easy to get sucked in to a model run that finally shows a huge hit but it's only one run and it's the 18z run at that with no support from the canadian, euro, uk, and to a lesser extent the nam. This is why I'm not allowing myself to get too worked up over it. The support from the gfs ensembles is encouraging but it is still ran off the gfs and sometimes they can go off the cliff with the operational run.  Now if the 0z runs, including the ensembles, come in still with a big hit or trending that way, then it will be hard not to get excited.

I actually think the 18z NAM was a big fluke of a run.

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Spot checking a few locations in the Coastal Plain per 18z GFS bufkit data, solution which is indicative of a stronger closer to the coast slp, KPOB (just west of FAY) 15.6" all snow, KRWI (Rocky Mount) 11.9 all snow, KEWN (New Bern), 0.4" snow, 0.97 IP, 1.37 ZR, wow.

 

http://www.meteor.iastate.edu/~ckarsten/bufkit/data/

 

UGH   KEWN   That would be beyond nasty.

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Looking at the 18z GFS, mainly SE NC and central/eastern SC would see some icy conditions.  A good initial measure for ice would be 850mb temps are above zero and sfc temp below zero.  See the map below.  The thick line is the 850mb temp freezing line and the line blue line is the surface freezing line:

 

8rMoKz9.gif

 

You can still get snow in above freezing situations depending on dynamic factors, wetbulb temps

 

Thank you for the information, greatly appreciated! Things look to be trending favorably for a majority of us. Hope it gets even better! I just wanted to see how things would "jive" for us. I sure as heck don't want to deal with an ice storm, had a bad experience with that from an ice storm in the past.

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All of the ENC local tv stations paint a decent snow event from Carteret County back to New Bern in Craven County.  There is a sharp cutoff with little to nothing from Greenville-west.  This blows my mind when you read the forums and see the potential amounts that are being discussed here.  I guess the tv mets are always going to be very cautious.

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Spot checking a few locations in the Coastal Plain per 18z GFS bufkit data, solution which is indicative of a stronger closer to the coast slp, KPOB (just west of FAY) 15.6" all snow, KRWI (Rocky Mount) 11.9 all snow, KEWN (New Bern), 0.4" snow, 0.97 IP, 1.37 ZR, wow.

 

http://www.meteor.iastate.edu/~ckarsten/bufkit/data/

Same site gives KILM 1.71 inches ZR. Hoooooly crap. That would be a worse disaster than a hurricane in my opinion (except for the beaches).

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Thank you for the information, greatly appreciated! Things look to be trending favorably for a majority of us. Hope it gets even better! I just wanted to see how things would "jive" for us. I sure as heck don't want to deal with an ice storm, had a bad experience with that from an ice storm in the past.

18z gfs gives cae .26 zr, 1.24 ip and 8.3" of snow according to bufkit    :) 

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I have to say, you guys may call me crazy, but i think we could see even more improvement in the models, especially further inland. However, this is only if the stj phases in completely. if this is a trend through the night/tomorrow, this will be a fun ride.

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