Area Forecast Discussion
Issued by NWS Knoxville/Tri Cities, TN

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FXUS64 KMRX 120334
AFDMRX

Area Forecast Discussion
National Weather Service Morristown TN
1034 PM EST Mon Dec 11 2017

.DISCUSSION...
Upper trough continues to deepen as a shortwave trough dives
southeastward through Missouri this evening helping to push a
strong cold front into our region by Tuesday morning. Moisture is
limited with this front, but brisk northwest winds will help to
provide orographic lift during the day along the higher terrain.
This will result in some scattered snow showers and flurries on
Tuesday with light accumulations generally at or above about 2000
feet and 1"-2" possible across the highest terrain. Cold
temperatures and gusty NW winds will also lead to dangerously cold
wind chill values atop the TN/NC mountains with wind chill values
Tuesday night in the -5F to -10F range.

Made some adjustments to hourly temperatures and minimum
temperatures tonight by adjusting them upwards a few degrees.
Increased southwesterly winds ahead of the front and high clouds
are keeping the boundary layer more mixed and keeping temperatures
higher in the 30s and 40s in all areas except for SW NC where
lingering snow cover and sheltered valleys are allowing
temperatures to drop into the 20s.

&&

.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN             37  43  25  43 /  10   0   0  10
Knoxville McGhee Tyson Airport, TN  35  40  22  39 /  10  10  10  10
Oak Ridge, TN                       36  40  22  38 /  10  10  10  10
Tri Cities Airport, TN              32  38  16  33 /  10  30  20  10

&&

.MRX WATCHES/WARNINGS/ADVISORIES...
NC...None.
TN...Winter Weather Advisory from 4 AM to 9 PM EST Tuesday for Blount
     Smoky Mountains-Cocke Smoky Mountains-Johnson-Sevier Smoky
     Mountains-Southeast Carter-Southeast Greene-Unicoi.

     Wind Chill Advisory from 10 PM Tuesday to 7 AM EST Wednesday for
     Blount Smoky Mountains-Cocke Smoky Mountains-Johnson-Sevier
     Smoky Mountains-Southeast Carter-Southeast Greene-Unicoi.

VA...None.
&&

$$

JB



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