[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 081917
SWOMCD
SPC MCD 081916
KYZ000-TNZ000-INZ000-ILZ000-MOZ000-ARZ000-082045-

MESOSCALE DISCUSSION 0763
NWS STORM PREDICTION CENTER NORMAN OK
0216 PM CDT FRI MAY 08 2009

AREAS AFFECTED...SRN IL..SRN IND...WRN KY...SERN MO...NERN AR AND
WRN THROUGH MIDDLE TN

CONCERNING...TORNADO WATCH 267...

VALID 081916Z - 082045Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 267 CONTINUES.

GREATEST THREAT FOR MORE WIDESPREAD DAMAGING WIND STILL APPEARS TO
BE ALONG LEADING GUST FRONT FROM N CNTRL TN...WRN KY INTO SWRN IND
AS WELL AS IN COMMA HEAD REGION OVER SRN IL. THREAT FOR ISOLATED
TORNADOES APPEARS TO BE GREATEST ACROSS MIDDLE AND PARTS OF WRN TN
BUT CONDITIONAL UPON ADDITIONAL STORM DEVELOPMENT. LARGE HAIL AND A
MORE ISOLATED DAMAGING WIND THREAT EXISTS FARTHER WEST ACROSS NERN
AR INTO WRN TN.

THIS AFTERNOON AN ORGANIZED MESOSCALE SYSTEM WITH A COMMA HEAD OVER
SRN IL AND BOWING LINE FARTHER SE ACROSS WRN KY INTO NRN PORTIONS OF
MIDDLE TN IS MOVING EAST AT AROUND 50 KT. THREAT FOR DAMAGING WIND
WILL CONTINUE WITH THIS FEATURE NEXT FEW HOURS...ESPECIALLY WITH
BOWING SEGMENT AS WELL AS WITHIN COMMA HEAD REGION. STORMS HAVE
BECOME MORE DISCRETE IN NATURE ALONG SRN END OF THE LINE ACROSS
MIDDLE TN...CONCURRENT WITH INCREASING 0-2 KM WINDS...PER 18Z BNA
SOUNDING AND VWP DATA...ASSOCIATED WITH A NEWD DEVELOPING LOW LEVEL
JET. THREAT FOR ISOLATED TORNADOES APPEARS GREATEST IN THIS REGION
NEXT COUPLE HOURS. FARTHER WEST ALONG TRAILING E-W PORTION OF THE
BOUNDARY ACROSS NERN AR...THE SWLY LOW LEVEL JET CONTINUES TO
PROMOTE THUNDERSTORM DEVELOPMENT PRIMARILY JUST NORTH OF THE
BOUNDARY. SWD DEVELOPMENT COULD BE LIMITED BY A CAP IN WARM SECTOR.
HOWEVER...STORMS THAT ARE TRAINING EWD IN THIS REGION WITH HAVE THE
POTENTIAL TO PRODUCE ISOLATED LARGE HAIL...VERY HEAVY RAIN AND
POSSIBLE ISOLATED STRONG WIND GUSTS. THERE IS ALSO SOME CONCERN THAT
STORMS DEVELOPING ALONG TRAILING OUTFLOW BOUNDARY COULD BECOME
SURFACE BASED AND DEVELOP A LITTLE FARTHER SEWD...WHICH WOULD
INCREASE THE THREAT OF DAMAGING WIND AND ISOLATED TORNADOES. THE 18Z
RAOB FROM LIT INDICATES THE CAP HAS WEAKENED SOMEWHAT SINCE 12Z THIS
MORNING.

..DIAL.. 05/08/2009

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

ATTN...WFO...LMK...OHX...IND...PAH...MEG...LSX...LZK...SGF...

LAT...LON   36758821 37278769 37678790 37658854 37718935 38468929
            38408703 36848681 35458747 35589121 36669179 36758821

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