[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 112303
SWOMCD
SPC MCD 112302
KYZ000-TNZ000-INZ000-ILZ000-MOZ000-ARZ000-120000-

MESOSCALE DISCUSSION 1060
NWS STORM PREDICTION CENTER NORMAN OK
0602 PM CDT THU JUN 11 2009

AREAS AFFECTED...LOWER OH RIVER TO MID-MS RIVER VALLEYS

CONCERNING...TORNADO WATCH 381...

VALID 112302Z - 120000Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 381 CONTINUES.

PRIMARY SEVERE THREAT SHOULD REMAIN WITH CONVECTIVE CLUSTER EVOLVING
INTO NRN/WRN KY WITHIN WW 381. MORE ISOLATED SEVERE POTENTIAL SHOULD
EXTEND FARTHER SWWD TOWARDS NERN AR/WRN TN. UNCERTAINTY IS RATHER
HIGH WITH THE EXTENT OF THIS THREAT SW OF WW 381 AND THUS
OBSERVATIONAL TRENDS WILL BE CLOSELY MONITORED FOR THE POSSIBILITY
OF AN ADDITIONAL WW.

CONSOLIDATION AND UPSCALE GROWTH OF NUMEROUS CONVECTIVE CELLS HAD
RECENTLY COMMENCED ALONG AND JUST S OF THE OH RIVER IN PORTIONS OF
NRN/WRN KY. ALTHOUGH THIS MAY TEND TO FAVOR A TRANSITION TO MORE OF
A DAMAGING WIND THREAT...MODERATELY STRONG DEEP-LAYER SHEAR WILL
CONTINUE TO FAVOR LARGE HAIL AND ISOLATED TORNADOES WITH EMBEDDED
SUPERCELL STRUCTURES. FARTHER SW...A FEW CELLS HAD DEVELOPED ALONG
SYNOPTIC BOUNDARY THAT EXTENDED INTO SRN MO/NRN AR. GIVEN THE
JUXTAPOSITION OF STRONG INSTABILITY WITH FAVORABLE DEEP-LAYER
SHEAR...THESE TSTMS WOULD ALSO POSE A THREAT FOR SEVERE HAIL/WINDS.
HOWEVER...OVERALL CONVECTIVE COVERAGE AND SUSTENANCE OF TSTMS BEYOND
THE NEXT 1-2 HRS IS QUESTIONABLE AS THIS REGION LIKELY WILL LIE IN
SUBSIDENCE IN THE WAKE OF SHORT WAVE IMPULSE EJECTING EWD ALONG THE
OH RIVER VALLEY.

..GRAMS.. 06/11/2009

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

ATTN...WFO...MRX...JKL...LMK...OHX...PAH...MEG...LZK...

LAT...LON   37748510 37428434 36828428 36568456 36468542 36328746
            35538909 35259037 35729120 36229120 36919043 37538847
            37838679 37748510

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