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Winter Storm 12/18/09 - 12/20/09
12-17-2009, 07:29 PM
Post: #1
Winter Storm 12/18/09 - 12/20/09
[Image: east_snow_121709_2.jpg]

Here is the forecast for this weekends weather (12/19/09)
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12-17-2009, 09:01 PM
Post: #2
Winter Storm 12/18/09 - 12/20/09
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12-18-2009, 09:33 AM
Post: #3
Winter Storm 12/18/09 - 12/20/09
SMokeys

Quote:****E SMOKY MOUNTAINS-BLOUNT SMOKY MOUNTAINS-
SEVIER SMOKY MOUNTAINS-
INCLUDING THE CITIES OF…COSBY…CADES COVE…GATLINBURG
400 AM EST FRI DEC 18 2009
…WINTER STORM WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO
7 PM EST SATURDAY…
.TODAY…RAIN AND SNOW LIKELY IN THE MORNING…THEN SNOW IN THE
AFTERNOON. SNOW ACCUMULATIONS UP TO 3 INCHES POSSIBLE IN THE
AFTERNOON. HIGHS IN THE UPPER 20S TO LOWER 40S. EAST WINDS 10 MPH OR
LESS. CHANCE OF PRECIPITATION NEAR 100 PERCENT.
.TONIGHT…SNOW. SNOW ACCUMULATIONS OF 4 TO 8 INCHES POSSIBLE. LOWS
IN THE LOWER 20S TO LOWER 30S. LIGHT WINDS. CHANCE OF PRECIPITATION
90 PERCENT.
.SATURDAY…SNOW LIKELY. TOTAL SNOW ACCUMULATIONS OF 5 TO 10
INCHES…WITH LOCALLY HIGHER AMOUNTS POSSIBLE. HIGHS IN THE UPPER
20S TO MID 30S. WEST WINDS 5 TO 15 MPH. CHANCE OF PRECIPITATION 60
PERCENT.
.SATURDAY NIGHT…SNOW SHOWERS LIKELY. LIGHT SNOW ACCUMULATIONS
POSSIBLE. LOWS IN THE UPPER TEENS TO LOWER 30S. NORTHWEST WINDS 5 TO
15 MPH. CHANCE OF SNOW 60 PERCENT.
.SUNDAY…MOSTLY CLOUDY. A CHANCE OF SNOW SHOWERS IN THE MORNING…
THEN A SLIGHT CHANCE OF RAIN SHOWERS AND SNOW SHOWERS IN THE
AFTERNOON. HIGHS IN THE MID 20S TO UPPER 30S. NORTHWEST WINDS 5 TO
10 MPH. CHANCE OF PRECIPITATION 30 PERCENT.

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12-18-2009, 09:37 AM
Post: #4
Winter Storm 12/18/09 - 12/20/09
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12-18-2009, 11:05 AM
Post: #5
Winter Storm 12/18/09 - 12/20/09
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12-18-2009, 01:28 PM
Post: #6
Winter Storm 12/18/09 - 12/20/09
From Http://www.weathertap.com

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12-18-2009, 01:38 PM
Post: #7
Winter Storm 12/18/09 - 12/20/09
Nashville, TN

Quote:AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
1138 AM CST FRI DEC 18 2009

.UPDATE...FOR 18Z AVIATION FORECAST

&&

.AVIATION...
DEEPENING SURFACE LOW APPROACHING PANHANDLE OF FLORIDA AT 17Z WITH
WIDESPREAD PRECIP SHIELD ACROSS A GOOD PART OF MID STATE AND
PLATEAU EASTWARD. THERE HAVE BEEN ISOLATED REPORTS OF ICE PELLETS
FROM CUMBERLAND AND FENTRESS COUNTIES DURING THE LAST HOUR. AS
SURFACE LOW PULLS NORTH TOWARD CAROLINAS EXPECT CONDITIONS TO
DETERIORATE ACROSS THE AREA WITH THE RAIN BECOMING MIXED WITH
SLEET AND SNOW LATE AFTERNOON AT CSV AND BECOME ALL SNOW IN THE
OVERNIGHT HOURS. EXPECT BNA TO STAY LIQUID THROUGH THE EVENING BUT
MAY BECOME MIXED WITH LIGHT SNOW AFTER MIDNIGHT.

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12-18-2009, 01:48 PM
Post: #8
Winter Storm 12/18/09 - 12/20/09
Quote:MESOSCALE DISCUSSION 2257
NWS STORM PREDICTION CENTER NORMAN OK
1232 PM CST FRI DEC 18 2009

AREAS AFFECTED...SMOKEY MTNS / PARTS OF WRN NC AND PIEDMONT / ERN TN
/ SWRN VA / SERN WV

CONCERNING...HEAVY SNOW

VALID 181832Z - 182230Z

HEAVY SNOWFALL RATES AROUND 1 INCH PER HOUR WILL LIKELY COMMENCE
FIRST ACROSS THE HIGHER ELEVATIONS OF THE SRN APPALACHIANS IN THE
18-21Z PERIOD WITH MIXED PRECIPITATION OCCURRING ACROSS WRN PORTIONS
OF THE NC PIEDMONT. THE HEAVY SNOWFALL RATES WILL EXTEND NEWD INTO
SWRN VA AND SERN WV 21-00Z. LOCALIZED RATES AROUND 2 INCHES PER
HOUR WITH POTENTIALLY HEAVIER BURSTS ARE POSSIBLE OVER E FACING
SLOPES IN WRN NC AND PERHAPS SW VA LATE THIS AFTERNOON INTO THE
EVENING HOURS.

EARLY AFTERNOON SURFACE ANALYSIS PLACED A SURFACE WEDGE FRONT FROM
PARTS OF SRN GA NEWD OVER THE ADJACENT SC/NC COASTAL WATERS.
SURFACE TEMPS NEAR 32 DEG F ARE CONFINED MAINLY TO PORTIONS OF WRN
NC AND SWRN VA. WET BULBING COOLING IN AREAS OF STRONG ASCENT WILL
SUPPORT A TRANSITION TO WET SNOW ACROSS ALL AREAS W OF I-85.

RADAR MOSAIC HAS SHOWN A SLUG OF HEAVIER PRECIPITATION MOVING NWD
ACROSS NRN GA THE PAST FEW HOURS WITH MEASURED RAINFALL RATES
0.20-0.30 INCH PER HOUR IN NRN GA AND WRN PART OF UPSTATE SC. AS A
LEAD SHORTWAVE TROUGH LOCATED OVER AL/GA MOVES NEWD TOWARDS THE SRN
APPALACHIANS...STRENGTHENING H8-H6 FRONTOGENESIS AND STRONG
MID-LEVEL UVV/S SPREADING NEWD ACROSS THE REGION WITHIN THE
DENDRITIC GROWTH LAYER IN THE MID-LATE AFTERNOON HOURS. WITH LITTLE
EVIDENCE TO THE CONTRARY...ACCORDING TO RADAR MOSAIC EXTRAPOLATION
AND MODEL CONSENSUS 6 HOURLY QPF...SNOWFALL RATES AOA 1 INCH PER
HOUR ARE LIKELY. RECENTLY DETECTED LIGHTNING OVER WRN NC INDICATES
UPRIGHT CONVECTION EXISTS OVER A SMALL AREA EARLY THIS AFTERNOON.
TOWARDS THIS EVENING...ETAKF/GFS FORECAST SOUNDINGS INDICATE THE
POSSIBILITY FOR MORE WIDESPREAD UPRIGHT CONVECTION OVER THE E FACING
SLOPES IN PARTS OF NWRN NC INTO SWRN VA. THIS MAY SUPPORT LOCALIZED
SNOW BURSTS APPROACHING 3 INCHES PER HOUR NEAR OR AFTER 00Z THIS
EVENING.

..SMITH.. 12/18/2009


...NOTICE...
SPC WINTER WEATHER MESOSCALE DISCUSSIONS WILL BE ISSUED ON A
SCHEDULED BASIS FROM DECEMBER 1 THROUGH FEBRUARY 28...FOUR
TIMES A DAY...AROUND 00 UTC...06 UTC...12 UTC...AND 18 UTC
FOR SIGNIFICANT SHORT RANGE WINTER WEATHER EVENTS.

ATTN...WFO...RAH...RNK...RLX...GSP...MRX...

LAT...LON 36317950 35488114 35128242 35008351 35438369 36078300
36528238 37078183 37588138 37968029 37847951 37077910
36317950

[Image: mcd2257.gif]

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12-18-2009, 04:45 PM
Post: #9
Winter Storm 12/18/09 - 12/20/09
Phelps is streaming

http://stormscapelive.com/

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12-18-2009, 05:41 PM
Post: #10
Winter Storm 12/18/09 - 12/20/09
[Image: image1.gif]

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