[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 182209
SWOMCD
SPC MCD 182208
ALZ000-TNZ000-MSZ000-182245-

MESOSCALE DISCUSSION 0661
NWS STORM PREDICTION CENTER NORMAN OK
0508 PM CDT FRI APR 18 2008

AREAS AFFECTED...NERN MS/NWRN AL/PARTS OF WRN AND MIDDLE TN

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 182208Z - 182245Z

WW MAY BE NEEDED ACROSS NERN MS/NWRN AL INTO PARTS OF WRN AND MIDDLE
TN.

REGIONAL RADARS INDICATED AN INCREASE IN CONVECTIVE ACTIVITY/LINE
SEGMENTS EXTENDING FROM CENTRAL/NRN MS INTO WRN TN...ALONG AND JUST
E OF PROGRESSIVE COLD FRONT.  INSTABILITY IS WEAKER WITH NWD EXTENT
AWAY FROM THE GULF COAST/MS DELTA REGION.  HOWEVER...STRONG FORCING
FOR ASCENT ATTENDANT WITH AR/LOWER MS VALLEY SHORT WAVE TROUGH IS
STRENGTHENING THE FRONTAL CIRCULATION.  THIS FORCING SHOULD BECOME
STRONGER AS THIS TROUGH TAKES ON A NEGATIVE TILT THIS EVENING AND
THUS MAINTAINS CONVECTIVE DEVELOPMENT.  STRONG WIND FIELDS /40 KT AT
1 KM AGL PER GWO WSR-88D VWP AND OKOLONA MS WIND PROFILER/ COMBINED
WITH 50 KT SWLY MEAN FLOW IN THE 850-300 MB LAYER SUGGEST DAMAGING
WIND GUSTS WILL BE POSSIBLE AS ACTIVITY SPREADS ENEWD ACROSS NERN MS
INTO NWRN AL AND WRN-MIDDLE TN.

..PETERS.. 04/18/2008

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

ATTN...WFO...OHX...BMX...HUN...MEG...JAN...

33008989 34108956 35548930 35868815 35858691 34978662
33858680 32878713 32918814



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