[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 131945
SWOMCD
SPC MCD 131944
TNZ000-MSZ000-KYZ000-ILZ000-MOZ000-ARZ000-132145-

MESOSCALE DISCUSSION 0775
NWS STORM PREDICTION CENTER NORMAN OK
0244 PM CDT FRI MAY 13 2011

AREAS AFFECTED...NERN AR...SERN MO...SWRN KY...EXTREME SRN IL...WRN
TN AND NRN MS

CONCERNING...SEVERE THUNDERSTORM WATCH 298...

VALID 131944Z - 132145Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 298
CONTINUES.

THREAT FOR ISOLATED LARGE HAIL AND DAMAGING WIND WILL PERSIST NEXT
FEW HOURS AS STORMS DEVELOP AND MOVE THROUGH THE LOWER MS VALLEY AND
WRN PORTION OF THE TN VALLEY.

AN EXPANSIVE OUTFLOW BOUNDARY EXTENDS FROM THE SERN STATES NWWD
THROUGH NWRN MS...INTO EXTREME ERN AR. A COLD FRONT STRETCHES FROM
THE MIDDLE MS VALLEY SWD THROUGH ERN AR WHERE IT MERGES WITH THE
OUTFLOW BOUNDARY THEN CONTINUES SWWD INTO TX. STORMS ARE DEVELOPING
PRIMARILY WITHIN ZONE OF LOW LEVEL CONVERGENCE ALONG THE OUTFLOW
BOUNDARY FROM NRN MS INTO ERN AR...WRN TN AND SERN MO. THE CAP HAS
BEEN WEAKENED IN THIS REGION BY DIABATIC WARMING AND DEEPER ASCENT
ASSOCIATED WITH VORT MAX ROTATING THROUGH UPPER TROUGH BASE. STORMS
REMAIN MOSTLY DISCRETE AND SUPERCELLULAR IN CHARACTER WITH A THREAT
OF MAINLY LARGE HAIL AND ISOLATED DAMAGING WIND. DIABATIC HEATING IS
PROMOTING RECOVERY OVER WRN TN ON THE COOLER SIDE OF OUTFLOW
BOUNDARY...SUGGESTING STORMS WILL CONTINUE TO POSE A THREAT FOR
ISOLATED LARGE HAIL AND DAMAGING WIND AS THEY DEVELOP EWD...WHILE
REMAINING EMBEDDED WITHIN 35-45 KT UNIDIRECTIONAL SHEAR.

..DIAL.. 05/13/2011

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

ATTN...WFO...PAH...MEG...JAN...

LAT...LON   34409057 36099008 37098986 37238883 36428849 34698859
            33478906 33459058 34409057

WWWW
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