[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 251639
SWOMCD
SPC MCD 251639
SCZ000-GAZ000-NCZ000-TNZ000-ALZ000-251815-

MESOSCALE DISCUSSION 1348
NWS STORM PREDICTION CENTER NORMAN OK
1139 AM CDT SUN JUN 25 2006

AREAS AFFECTED...NE AL...WRN TN...NRN/CNTRL GA

CONCERNING...SEVERE THUNDERSTORM POTENTIAL

VALID 251639Z - 251815Z

THUNDERSTORMS WILL INCREASE IN COVERAGE ACROSS THE TN VALLEY AND SRN
APPALACHIANS THIS AFTERNOON. THE STRONGER CELLS MAY HAVE A POTENTIAL
FOR STRONG WIND GUSTS AND HAIL.

LATEST ANALYSIS SHOWS A QUASI-STATIONARY FRONT EXTENDING SWWD ACROSS
THE SRN APPALACHIANS INTO CNTRL AL AND SRN MS. SFC DEWPOINTS ALONG
THE BOUNDARY ARE NEAR 70 F AND MODERATE INSTABILITY IS ALREADY IN
PLACE WITH MLCAPE VALUES AROUND 1500 J/KG ACROSS AL...NRN GA AND
CNTRL MS. INCREASING INSTABILITY AND CONVERGENCE ALONG THE BOUNDARY
ALONG WITH A BROAD ZONE OF LARGE-SCALE ASCENT AHEAD OF AN
APPROACHING UPPER-TROUGH WILL ALLOW THUNDERSTORMS TO QUICKLY EXPAND
IN COVERAGE THIS AFTERNOON. ALTHOUGH VERTICAL SHEAR PROFILES ARE
RELATIVELY WEAK...THE INSTABILITY AND STEEPENING LOW-LEVEL LAPSE
RATES SHOULD INCREASE THE POSSIBILITY FOR STRONG WIND GUSTS BY
MID-AFTERNOON. STRONG GUSTY WINDS WILL BE POSSIBLE NEAR CELL MERGERS
AND OUTFLOW BOUNDARY INTERACTIONS. HAIL MAY ALSO ACCOMPANY THE
STRONGER MULTICELL STORMS.

..BROYLES.. 06/25/2006

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

ATTN...WFO...GSP...MRX...FFC...OHX...BMX...HUN...

32978558 33498661 34518698 35858605 36048431 35328312
33898287 32958407

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