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2nd Annual Snow Thread for the Mountains


Met1985

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Looks fairly snowy on Hemp Hill this morning:

 

http://www.maggievalleyonline.com/weather/hemphill.jpg

 

Will have to get a weather report for my mtn top and see what's up.

I can say Mike that down here at about 3500 feet we are getting a mix of snow, rain, and sleet this morning with the temp down to 33 degrees.

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12z nam agrees with 00z run.  If I were forecasting solely from this model, then I think 1-3 inches is possible for the valley.

 

And that might be underdone!  The 12Z NAM is crazy wet.  Taken at face-value (which we shouldn't do), liquid amounts are near .33" for Asheville.  Soundings are very cold, favoring at least 12:1 or maybe even 15:1 ratios late tomorrow afternoon.

 

NAM_218_2014011412_F33_35.5000N_82.5000W

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Ha ha.  I really want to see model consensus on this before we get locked in.  The drier trends on the GFS are disconcerting, but recall it was only yesterday that the NAM was 0.0" too...

 

 

Yeah was just thinking the same thing.  I guess we will have to see how the 12z gfs comes in.  If it begins to cave to the nam then I think we are in business.

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I'll just throw this out there for you guys: the last time Asheville saw a one-inch snow event was back on January 10, 2011. It's been three years! Could this be the system (or week?) that finally puts us over?

thats really bad. And I thought I was doing bad with only three inches.
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I'll just throw this out there for you guys: the last time Asheville saw a one-inch snow event was back on January 10, 2011.  It's been three years!  Could this be the system (or week?) that finally puts us over?

I'll believe it when I see it.  I'm very gun shy, and know not to get excited yet.     :snowwindow:   Wow 1-3 inches would be great.  GSP not sounding to good about the possible snow yet, guess they're being they're conservative selves,  we are getting into the time range for watches and advisories to go out.

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I'll believe it when I see it.  I'm very gun shy, and know not to get excited yet.     :snowwindow:   Wow 1-3 inches would be great.  GSP not sounding to good about the possible snow yet, guess they're being they're conservative selves,  we are getting into the time range for watches and advisories to go out.

 

There are a couple reasons why they didn't issue anything in the overnight disco.

 

.SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/...

AS OF 230 AM TUESDAY...CONFIDENCE IS MODERATE AT BEST IN TOMORROW/S

FORECAST...AS THERE ARE RATHER MAJOR DIFFERENCES BETWEEN THE

OPERATIONAL MODELS REGARDING HANDLING OF THE STRENGTH AND

ORIENTATION OF THE MAJOR SHORT WAVE TROUGH THAT WILL TRAVERSE THE

REGION. THE NAM IS STRONGER/SLOWER...AND ESTABLISHES A NEGATIVELY

TILTED TROUGH FASTER THAN THE GFS. AS SUCH...THE NAM FEATURES MORE

ORGANIZED SURFACE DEVELOPMENT/STRONGER FRONTOGENESIS AND A

CONSIDERABLY WETTER SOLUTION...AS IT DROPS .2-.4 INCH OF QPF ACROSS

MUCH OF THE NC MTNS IN ASSOCIATION WITH THE FRONTAL BAND.

MEANWHILE...THE GFS YIELDS LESS THAN .10 INCH. OVERALL...THE LATEST

ECMWF REPRESENTS A REASONABLE COMPROMISE IN TERMS OF TIMING AND

STRENGTH BETWEEN THE TWO MODELS...AND THE OFFICIAL FORECAST HAS KIND

OF/SORT OF BEEN BASED UPON THAT. WITH TEMPS PLUMMETING IN UNISON

WITH ARRIVAL OF THE MOISTURE AND FORCING...SNOW WILL BE THE

PREDOMINANT...IF NOT THE ONLY P-TYPE ACROSS THE MOUNTAINS...AND 1-2

INCHES APPEARS LIKELY WITH THE FRONTAL BAND...WITH W/NW UPSLOPE FLOW

LIKELY ENHANCING SNOWFALL RATES A BIT ALONG THE TENN BORDER. WE

CONTEMPLATED ISSUING AN ADVISORY FOR THE TENN BORDER COUNTIES THIS

MORNING...BUT THIS BEING A THIRD PERIOD EVENT...WE OPTED TO HOLD OFF

AFTER COLLABORATION WITH MRX AND RNK.

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Yes, the 12Z GFS run is again night/day difference compared to the NAM.  Unbelieveable state of modeling in the USA right now.  It all comes down to how fast the trough goes negative tilt.  NAM is quicker and thus pumps out the moisture, while GFS is much later and thus much more progressive with the wave.

 

Will now need to wait until 12Z Euro to see what compromise/blend solution will be.

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