[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 181416
SWOMCD
SPC MCD 181415
SCZ000-GAZ000-NCZ000-TNZ000-KYZ000-ALZ000-181545-

MESOSCALE DISCUSSION 1201
NWS STORM PREDICTION CENTER NORMAN OK
0915 AM CDT THU JUN 18 2009

AREAS AFFECTED...S-CNTRL KY SSEWD THROUGH MIDDLE/ERN TN INTO
PORTIONS OF GA

CONCERNING...SEVERE POTENTIAL...WATCH LIKELY

VALID 181415Z - 181545Z

BOWING MCS OVER SRN IND AS OF 14Z IS EXPECTED TO CONTINUE SEWD AND
EVENTUALLY MORE SWD INTO GA TODAY.  AN ADDITIONAL...DOWNSTREAM WW
WILL BE REQUIRED.  PARTS OF AREA WILL BE UPGRADED TO MODERATE RISK
AT 1630Z FOR THE POTENTIAL FOR WIDESPREAD DAMAGING WINDS.

MCS OVER SRN IND HAS ACCELERATED TO 50-55 KT OVER THE PAST HALF HOUR
OR SO OVER SRN IN WITH EXTRAPOLATED MOTION TAKING IT INTO NRN GA BY
19Z.  12Z BNA SOUNDING IS LIKELY REPRESENTATIVE OF AMBIENT INFLOW
AIR MASS...FEATURING A MOIST BOUNDARY LAYER AND STEEP MIDLEVEL LAPSE
RATES...CONTRIBUTING TO A POTENTIALLY STRONGLY UNSTABLE AIR MASS.
THIS INSTABILITY IN CONJUNCTION WITH MODERATELY STRONG NWLY WINDS
/40-50 KT/ IN THE MIDLEVELS SHOULD EFFECTIVELY MAINTAIN THE BOWING
STRUCTURE AS IT PROGRESSES SEWD TODAY.

..MEAD.. 06/18/2009

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

ATTN...WFO...GSP...MRX...JKL...FFC...LMK...OHX...HUN...

LAT...LON   36238657 36918651 37438599 37398522 36578424 35348341
            34528329 33948364 33888456 34398537 35648637 36238657



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