[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 051713
SWOMCD
SPC MCD 051713
TNZ000-ARZ000-OKZ000-TXZ000-052315-

MESOSCALE DISCUSSION 0015
NWS STORM PREDICTION CENTER NORMAN OK
1113 AM CST MON JAN 05 2009

AREAS AFFECTED...N CNTRL TX AND CNTRL/NERN AR...EXTREME WRN TN

CONCERNING...FREEZING RAIN

VALID 051713Z - 052315Z

PERIODS OF FREEZING RAIN WILL PERSIST THROUGH THE AFTERNOON HOURS
WITH QPF RATES OF 0.05 TO 0.20 IN/HR. THE GREATEST ICE ACCUMULATION
WILL BE OVER CNTRL AND NE AR.

A BROAD ZONE OF PRECIPITATION PERSISTS ACROSS NRN TX INTO AR AND WRN
TN DUE TO WARM ADVECTION ATOP A SURFACE HIGH. THIS SHIELD OF RAIN
AND FREEZING RAIN WILL PERSIST FOR SEVERAL MORE HOURS...AND THE KEY
FACTOR WILL BE SURFACE TEMPERATURES.

AT 17Z...THE FREEZING LINE EXTENDED FROM WRN TN ACROSS CNTRL AR.
NELY WINDS OF 10-15 MPH EXISTED ACROSS NE AR...HELPING TO KEEP COOL
DRY AIR IN PLACE FROM ADVECTION. THE FREEZING LINE ACROSS CNTRL AR
IS NOT EXPECTED TO MOVE MUCH DUE TO ADVECTION AS WELL AS
EVAPORATIONAL COOLING...THUS AREAS OF SIGNIFICANT ICING WILL BE
POSSIBLE.

FARTHER SW INTO NRN TX...SUB-FREEZING AIR EXISTED AS WELL WITH
FREEZING RAIN ONGOING ACROSS THE METROPLEX. GUIDANCE SUGGESTS THAT
PERIODS OF FREEZING RAIN WILL PERSIST IN THIS AREA AS
WELL...ALTHOUGH TEMPERATURES SHOULD SLOWLY RISE THROUGH THE DAY.

..JEWELL.. 01/05/2009

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

...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...MEG...LZK...SHV...TSA...FWD...

LAT...LON   35728941 34699079 34329215 34359310 34579397 33539608
            32169672 31949755 32079849 32409874 33159822 33629742
            33729650 33529608 34599394 35349288 35709119 35938958
            35968943 35858933 35728941



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