[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 111930
SWOMCD
SPC MCD 111929
SCZ000-NCZ000-VAZ000-TNZ000-112030-

MESOSCALE DISCUSSION 1054
NWS STORM PREDICTION CENTER NORMAN OK
0229 PM CDT THU JUN 11 2009

AREAS AFFECTED...PARTS OF EXTREME SWRN VA / WRN NC / CNTRL SC

CONCERNING...SEVERE POTENTIAL...WATCH LIKELY

VALID 111929Z - 112030Z

INCREASING POTENTIAL FOR DAMAGING WINDS AND MARGINALLY SEVERE HAIL
ACROSS PARTS OF THE CAROLINA PIEDMONT INTO SWRN VA THIS AFTERNOON.
A WW WILL LIKELY BE REQUIRED BY 20Z.

RECENT RADAR MOSAIC HAS SHOWN TSTMS RAPIDLY DEVELOP IN THE PAST HOUR
TO THE LEE OF THE APPALACHIANS OVER THE CAROLINA PIEDMONT.  FURTHER
W...WELL ORGANIZED QLCS WILL LIKELY CONTINUE TO MOVE EWD OVER THE
SRN APPALACHIANS INTO THE WRN PART OF THE HIGHLIGHTED REGION AROUND
21Z.  RECENT SURFACE ANALYSIS SHOWS TRAILING PORTION OF OUTFLOW
BOUNDARY FROM S-CNTRL VA TSTM CLUSTER IS ELONGATED W TO E ACROSS
PARTS OF THE CNTRL NC PIEDMONT.  AREAS ALONG AND S OF THE BOUNDARY
HAVE DESTABILIZED DUE IN PART TO STRONG DIABATIC HEATING.
UNCERTAINTY IN NWD EXTENT OF THREAT AREA IS LARGELY DUE TO
STABILIZING INFLUENCE DUE TO CONVECTIVE OVERTURNING FROM PRIOR MCS.
HOWEVER...STRONG HEATING HAS COMMENCED IN ITS WAKE...WITH A
DESTABILIZING BOUNDARY LAYER--LEADING IN PART TO AN INCREASED SEVERE
THREAT OVER THIS AREA.

..SMITH.. 06/11/2009

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

ATTN...WFO...RAH...RNK...CAE...GSP...MRX...

LAT...LON   33938212 36798191 36988169 36878128 36058039 35078012
            34128042 33508097 33608202 33938212

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