[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 111855
SWOMCD
SPC MCD 111855
NCZ000-VAZ000-SCZ000-TNZ000-KYZ000-GAZ000-ALZ000-112000-

MESOSCALE DISCUSSION 1052
NWS STORM PREDICTION CENTER NORMAN OK
0155 PM CDT THU JUN 11 2009

AREAS AFFECTED...PARTS OF ERN AL / NRN GA / WRN SC-NC / ERN TN-KY /
FAR SWRN VA

CONCERNING...SEVERE THUNDERSTORM WATCH 376...

VALID 111855Z - 112000Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 376
CONTINUES.

ENHANCED WIND DAMAGE THREAT WILL LIKELY CONTINUE THIS AFTERNOON WITH
QLCS OVER THE WRN PART OF THE SRN APPALACHIANS.  FARTHER W ACROSS
NRN GA AND ERN AL...SEMI DISCRETE STORMS IN A BROKEN LINE WILL POSE
A LARGE HAIL THREAT IN ADDITION TO SPORADIC DMGG WINDS.

WELL DEVELOPED MCV WILL CONTINUE TO MOVE EWD ACROSS ERN TN/KY THE
NEXT FEW HOURS.  WATER VAPOR IMAGERY SHOWS A PRONOUNCED MID LEVEL
DRY AIR SIGNATURE NOSING UP TO BACKSIDE OF MCV/EXTENSIVE SQUALL
LINE.  THIS SHOULD AID IN EVAPORATIVELY ENHANCING DOWNDRAFTS.  AREAS
AHEAD OF THE NRN PORTIONS OF SQUALL LINE /FAR ERN KY-SWRN VA-FAR ERN
TN-WRN NC/ HAVE CLEARED AND THE AIRMASS IS DESTABILIZING IN WAKE OF
EARLIER MORNING MCS.  THIS REGION IS LOCATED ON THE SRN FRINGE OF
THE STRONGER WLYS AND...FORWARD PROPAGATING MCS CHARACTER WILL
LIKELY BE MAINTAINED AT LEAST INTO THE LATE AFTERNOON HOURS.
MOREOVER...EXPECTING AN ENHANCED WIND DAMAGE SWATH ACROSS THIS AREA
AS 35 KT MOVING QLCS TRAVERSES ENEWD THIS AFTERNOON.

FAR S...STORMS AND THEIR ASSOCIATED COLD POOLS HAVE TENDED TO NOT
CONGEAL AND EVOLVE INTO A MCS LIKE AREAS FURTHER N.  INTERMITTENT
SUPERCELL STRUCTURE HAS BEEN OBSERVED IN THE PAST HOUR IN THE
TRAILING PORTION OF THE BROKEN LINE OVER ERN AL.  MODIFIED 12Z/11
FFC RAOB FOR RECENTLY OBSERVED UPPER 80S TEMP AND UPPER 60S
DEWPOINTS YIELDS A STRONGLY CONVECTIVELY UNSTABLE AIRMASS /IN EXCESS
OF 2500 J/KG MLCAPE/ IN ADVANCE OF ONGOING CONVECTION.  AS A
RESULT...EXPECTING MORE OF A LARGE HAIL THREAT HERE WITH THE MORE
ROBUST UPDRAFTS...IN ADDITION TO ISOLD DMGG WINDS.

CONVECTION RECENTLY DEVELOPED IN LEE OF THE SRN APPALACHIANS OVER
THE SC UPSTATE AND WRN NC.  THIS ACTIVITY WILL PROBABLY CONTINUE TO
POSE AN ISOLD LARGE HAIL/DMGG WIND THREAT BEFORE BEING OVERTAKEN BY
LARGER COMPLEX TO THE W LATER THIS AFTERNOON.

..SMITH.. 06/11/2009

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

ATTN...WFO...RLX...CAE...GSP...MRX...JKL...FFC...BMX...

LAT...LON   37278204 36548196 35088189 34188201 33788304 33288450
            33008558 33038615 33368624 33748603 33858541 34098481
            34538424 34858408 35538401 35988383 36648393 37158404
            37478374 37728304 37718246 37278204



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