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Maybe they will be right, but MRX still not real excited yet for the valley in their afternoon disco...

 

SNOWFALL AMOUNTS RIGHT NOW ARE EXPECTED TO BE LIGHT WITH HEAVIER
AMOUNTS OF A COUPLE INCHES POSSIBLE ALONG THE APPALACHIAN CREST OR
EAST OF THE APPALACHIANS IN THE 24 HOUR PERIOD FROM TUESDAY NIGHT
INTO WEDNESDAY NIGHT. AT THE SAME TIME WEDNESDAY AND WEDNESDAY NIGHT
MEDIUM RANGE MODELS DEVELOP A SURFACE LOW ALONG THE FRONT OVER THE
NORTHERN GULF AS UPPER TROUGH DIGS SOUTH AND THEN MOVE IT NE ACROSS
THE SE STATES THROUGH THE CAROLINAS. THIS SYSTEMS TRACK MAY GIVE THE
EASTERN PART OF THE FORECAST AREA A MORE SIGNIFICANT SNOWFALL. WITH
UPPER FLOW SWITCHING TO THE NW LATE WEDNESDAY INTO THURSDAY MORE
ACCUMULATING SNOW IS POSSIBLE ESPECIALLY IN THE HIGHER EASTERN
MOUNTAINS AND HIGH KNOB AREA OF VIRGINIA. MODELS SHOW A POSSIBLE
BRIEF DRY PERIOD THURSDAY NIGHT OR FRIDAY BEFORE ANOTHER SYSTEM
MOVES IN SATURDAY AND SATURDAY NIGHT.

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For the record I think the GFS will offer the same solution as it's previous runs. Normally it is slower and more stubborn to latch on to trends. Read JKL's discussion and they are siding with the GFS for now because it holds the less dramatic solution. 18z GFS is running let's so what it has up its sleeve.

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That is extremely rare, as JKL almost always sides with a Euro/Euromeans blend.

 

This is the most telling statement about how awful models have been this year.

 

 

 

GIVEN RECENT MODEL PERFORMANCE JUST A FEW HOURS OUT...THE LIGHT SNOW
TONIGHT COULD BE MORE WIDESPREAD THOUGH THERE IS PROBABLY AN EQUAL
CHANCE OF IT BEING MORE SCATTERED THAN OUR CURRENT GOOD CHANCE TO
LIKELY POPS WOULD SUGGEST.
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12z Euro ensemble snow totals

Deterministic / Ensemble Mean

Bristol

4.4/5.8 with 14 greater than 8 inches

Chattanooga

2.9/4.5 with 7 greater than 8 inches

Knoxville

4.4/4.2 with 9 greater than 8 inches

Crossville

5.1/3.8 with 8 greater than 8 inches

Nashville

1.7/1.7 with 2 greater than 8 inches

Jackson

0.2/1.1

Paris

0.1/0.6

Memphis

0.4/1.6

Tupelo

1.8/1.8 with 1 greater than 8 inches

Huntsville

1.8/2.6 with 1 greater than 8 inches

Asheville

8.5/11.0 with 33 greater than 10 inches

It's notable that for the east TN cites almost every member shows 2 inches or more.

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Robert just posted this on FB, and has the video ready for premium subscribers.  

 

 

Video is done for premium subscribers. I laid out where the worst of the worst is, and in one graphic, such as this one, I'm very concerned on the infrastructure, trees and keeping Power for the Piedmont, Foothills and even Sandhills of the southeast. The area at most risk is here. The snow first, then a lot of sleet (which won't be a bad thing on power) but there will be a lot of freezing rain from the Midlands of SC toward Augusta and Atlanta in the heart of the event.
Gee...See More
1622827_781693538527370_1187290857_n.jpg
Like ·  · Share · 201624 · 9 minutes ago · 
 
 
 
 
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One thing that is showing up on the latest runs are some surface temp issues in East TN.  May not be a big deal or it might.  For example, the 18z NAM meteogram shows 4.8 inches at 11:1 ratio for TYS.  The cobb is 1.5 inches.  Not trying to focus on too many details right now as models are still wiggling around, but just noting the potential for the temps to cut down totals.

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Just looking at the ensemble tracks from the GFS and GGEM. Both have tracks across northern FL, then pretty far off the coast, before making the turn. Certainly not a heavy snow track for anyone in east Tn, let alone central Tn. We really need an earlier phase or an enormous qpf field.

Sent from my iPhone using Tapatalk

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Before the 0z runs start Id like to say that the energy for the 2nd wave that we are eyeing is still out in the North Pacific. How this energy dives out of Montana will play a large role in the evolution of this storm. A little sharper and further west then the phase and negative tilt may occur quicker but that is just speculation.

Going back to the 18z NAM I know this is at 84 hours but I really like the look at 500mb. There's even a chance that this closes off to the southeast of us.

jerepeqy.jpg

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