[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 081740
SWOMCD
SPC MCD 081740
TNZ000-MOZ000-ARZ000-082345-

MESOSCALE DISCUSSION 0110
NWS STORM PREDICTION CENTER NORMAN OK
1140 AM CST MON FEB 08 2010

AREAS AFFECTED...N CNTRL AND NE AR...MO BOOTHILL...WRN TN

CONCERNING...HEAVY SNOW

VALID 081740Z - 082345Z

SNOWFALL RATES OF 1-2 IN/HR ARE EXPECTED TO DEVELOP OVER N CNTRL AND
NE AR...THE MO BOOTHILL...INTO WRN TN THIS AFTERNOON.

COMPOSITE RADAR IMAGERY INDICATES SWATH OF PRECIP OVER CNTRL AR IS
SLOWLY DEVELOPING TOWARDS THE ENE...DOWNSTREAM OF AN EMBEDDED SRN
STREAM IMPULSE LOCATED OVER THE TX PANHANDLE PER 17Z VAPOR IMAGERY.
AS NRN STREAM CLOSED UPPER LOW OVER THE NRN PLAINS DIVES SSEWD...300
MB 100+ KT JET STREAK LOCATED OVER SE MO WILL SLOWLY STRENGTHEN PER
RUC MODEL GUIDANCE. INCREASING UPPER LEVEL DIVERGENCE AHEAD OF THE
AFOREMENTIONED FEATURES...COUPLED WITH MODEST WAA ADVECTION IN THE
900-800 MB LAYER...IS EXPECTED TO CONTRIBUTE SUFFICIENT ASCENT FOR
HEAVY SNOWFALL TO DEVELOP.

AS OF 17Z...OBJECTIVE ANALYSIS PLACED THE SFC WET-BULB FREEZING LINE
FROM RUE TO 10 S JBR. THIS SHOULD REMAIN NEARLY STATIONARY THROUGH
00Z. NAM/RUC MODEL FORECAST SOUNDINGS INDICATE A DEEPENING
ISOTHERMAL LAYER BELOW THE DENDRITIC GROWTH ZONE...SUPPORTING HEAVY
SNOW RATES OF 1-2 IN/HR THROUGH EARLY EVENING OVER CNTRL AND NE AR
THROUGH WRN TN.

..ROGERS/GRAMS.. 02/08/2010

...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...PAH...MEG...LZK...

LAT...LON   34739184 34579355 34899391 35849297 36648996 36258883
            35328852 34739184



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