[MCD] SWOMCD

Wed Dec 7 18:51:05 UTC 2005

ACUS11 KWNS 071848
SWOMCD
SPC MCD 071848 
OKZ000-TXZ000-080045-

MESOSCALE DISCUSSION 2543
NWS STORM PREDICTION CENTER NORMAN OK
1248 PM CST WED DEC 07 2005

AREAS AFFECTED...CNTRL/NCNTRL TX...SRN OK

CONCERNING...WINTER MIXED PRECIPITATION 

VALID 071848Z - 080045Z

...A WINTRY MIX OF PRECIPITATION WILL CONTINUE ACROSS THE SRN
PLAINS.  FREEZING RAIN WILL CONTINUE WELL INTO THE EVENING HOURS
ACROSS PORTIONS OF THE DFW METROPLEX...SWD ALONG I-35...

STRONG LOW LEVEL COLD ADVECTION CONTINUES ACROSS THE HILL COUNTRY
THIS AFTERNOON...WITH SUB FREEZING TEMPERATURES NOW OBSERVED OVER
MOST OF THE ESCARPMENT WEST OF I-35.  SUSTAINED WARM ADVECTION ATOP
THIS SHALLOW AIRMASS HAS AIDED RENEWED SHOWER DEVELOPMENT AS
PRECIPITATION/SHALLOW CONVECTION EXPANDS NWD ACROSS NCNTRL TX INTO
SRN OK.  THESE TRENDS WILL LIKELY PERSIST WELL INTO THE EVENING
HOURS BEFORE SUBSIDENT...DRYING AIRMASS DEVELOPS AND SPREADS ACROSS
NWRN TX.

LATEST TRENDS...AND FORECAST SOUNDINGS SUGGEST FREEZING RAIN WILL BE
THE GREATEST WINTER THREAT ALONG THE I-35 CORRIDOR FROM JUST NORTH
OF AUS...INTO THE DFW METROPLEX.  NWRN PORTIONS OF THE METROPLEX
HAVE TRANSITIONED TO SLEET.  HOWEVER DOWNSTREAM...VERTICAL PROFILES
REMAIN FAVORABLE FOR A PROLONGED FREEZING RAIN EVENT THAT SHOULD
GENERATE HOURLY FREEZING RAIN TOTALS ON THE ORDER OF .02
IN...ESPECIALLY FROM DALLAS COUNTY TO HILL COUNTY.

FARTHER NORTH...LIGHT SNOW IS DEVELOPING/SPREADING NWD ACROSS SRN
OK.  THIS PRECIPITATION WILL GRADUALLY INCREASE IN INTENSITY AS
EVENING APPROACHES...BUT SNOW RATES SHOULD REMAIN WELL LESS THAN
1IN/HR.

..DARROW.. 12/07/2005

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

ATTN...WFO...TSA...FWD...OUN...EWX...

32239822 33669868 35799632 35189551 32889606 32069656
30979711 30329772 30459838 31289825 

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