MESO: Mesoscale Discussion 2071

ACUS11 KWNS 080729
SWOMCD
SPC MCD 080728
KYZ000-TNZ000-MSZ000-081130-

MESOSCALE DISCUSSION 2071
NWS STORM PREDICTION CENTER NORMAN OK
0128 AM CST SUN DEC 08 2013

AREAS AFFECTED...WRN/MIDDLE TN...SRN/ERN KY

CONCERNING...FREEZING RAIN

VALID 080728Z - 081130Z

SUMMARY...FREEZING RAIN WILL BE NOTED ALONG A CORRIDOR FROM WRN TN
INTO PORTIONS OF ERN KY PRIOR TO SUNRISE. FREEZING RAIN RATES
SHOULD EXCEED 0.05 INCHES PER HOUR AT TIMES.

DISCUSSION...LOW LEVEL WARM ADVECTION IS INCREASING ALONG A RIBBON
FROM SRN AR...ACROSS TN INTO ERN KY EARLY THIS MORNING. LATEST
MODEL GUIDANCE SUGGESTS LLJ WILL INCREASE MARKEDLY TOWARD SUNRISE
WITH 850MB SPEEDS INCREASING TO NEAR 50KT BY LATE MORNING ACROSS ERN
TN/ERN KY. THIS WARM ADVECTION APPEARS TO BE MOSTLY RESPONSIBLE FOR
AN ELONGATED BAND OF INCREASING PRECIPITATION THAT IS FALLING
THROUGH A SHALLOW COLD BOUNDARY LAYER CHARACTERIZED BY NEAR
SUB-FREEZING TEMPERATURES. FORECAST SOUNDINGS SUGGEST TEMPERATURES
WILL GRADUALLY RISE ABOVE FREEZING BY 12-13Z WITH MOST OF THE MD
REGION EXPERIENCING BOUTS OF FREEZING RAIN AOA 0.05 INCHES PER HOUR.

..DARROW.. 12/08/2013

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...MRX...JKL...LMK...OHX...PAH...MEG...

LAT...LON 35238974 35788887 36588724 37088601 37498481 37718365
37708310 37618268 37198264 36908329 36488489 35958651
35398811 34918941 35238974

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