[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 162225
SWOMCD
SPC MCD 162225
INZ000-KYZ000-TNZ000-ILZ000-MOZ000-ARZ000-170030-

MESOSCALE DISCUSSION 1777
NWS STORM PREDICTION CENTER NORMAN OK
0525 PM CDT THU AUG 16 2012

AREAS AFFECTED...SRN IL...SRN IND...SERN MO...WRN KY

CONCERNING...SEVERE THUNDERSTORM WATCH 582...583...

VALID 162225Z - 170030Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
582...583...CONTINUES.

SUMMARY...A LINE OF SEVERE THUNDERSTORMS WILL CONTINUE TO POSE A
DAMAGING WIND AND HAIL THREAT AS THEY DEVELOP SEWD INTO THE LOWER OH
VALLEY.

DISCUSSION...SURFACE ANALYSIS SHOWS STRONG PRESSURE FALLS FROM SRN
IND INTO WRN KY AHEAD OF THE LINE OF STORMS. NRN PORTIONS OF THE
LINE HAVE HAD THE STRONGEST INDICATION OF SEVERE WINDS AS IT TREKS
EWD ALONG AN EXISTING OUTFLOW BOUNDARY OVER S CNTRL IND.
HOWEVER...DRIER AIR EXISTS ACROSS WRN OH INTO NRN KY...AND STORMS
ARE EXPECTED TO WEAKEN ONCE THEY EXIT WW 58S.

WIND ALOFT DECREASE WITH SWD EXTENT...BUT AROUND 30 KT MIDLEVEL FLOW
FROM EVV TO PAH WILL BE SUFFICIENT TO MAINTAIN AN ORGANIZED SEVERE
WIND AND HAIL THREAT. ADDITIONAL BOWS/SURGES MAY OCCUR WITH TIME AS
STRONG INSTABILITY REMAINS ALONG WITH PRESSURE FALLS.

..JEWELL.. 08/16/2012

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

ATTN...WFO...ILN...LMK...OHX...IND...PAH...ILX...MEG...LSX...

LAT...LON   39018960 39298819 39598705 39598609 39608502 37938554
            36588628 36318736 36048959 36169055 36449110 37549031
            39018960



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