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Severe Storm Outlook Narrative (AC)
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ACUS11 KWNS 182239
SWOMCD
SPC MCD 182238
INZ000-KYZ000-ILZ000-182345-

MESOSCALE DISCUSSION 1123
NWS STORM PREDICTION CENTER NORMAN OK
0538 PM CDT TUE JUN 18 2013

AREAS AFFECTED...E-CNTRL IL...SRN IND

CONCERNING...SEVERE THUNDERSTORM WATCH 324...

VALID 182238Z - 182345Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 324
CONTINUES.

SUMMARY...THREAT FOR MARGINALLY SVR HAIL/WIND GUSTS SHOULD CONTINUE
TO ACCOMPANY THE STRONGEST TSTMS ACROSS E-CNTRL IL AND SRN IND.

DISCUSSION...NUMEROUS CELL INTERACTIONS/MERGERS HAVE LED TO
CONSOLIDATION OF TSTMS INTO A NEARLY CONTINUOUS LINE ACROSS
SWRN/S-CNTRL IND. AN ACCOMPANYING GUST FRONT WAS NOTED ON RADAR AND
WAS SURGING SWD AHEAD OF THE CONVECTION...LEADING TO A GRADUAL
DECREASE IN INTENSITY OF TSTMS OVER SWRN IND OVER THE PAST HALF
HR...WHILE STRONGER CONVECTIVE CORES ARE CENTERED OVER S-CNTRL/SERN
IND. CONVECTION SHOULD CONTINUE TO SHIFT SWD AS LINE CONTINUES TO
CONSOLIDATE...BUT THREAT FOR DMGG WINDS/HAIL SHOULD REMAIN MARGINAL.
TSTMS REMAIN MORE ISOLATED ACROSS E-CNTRL IL WHERE LOW-LEVEL
CONVERGENCE IS LESS FOCUSED...BUT AHEAD OF AN APPROACHING SHORTWAVE
UPPER TROUGH. THE BOUNDARY LAYER REMAINS SUFFICIENTLY WARM/MOIST TO
MAINTAIN A MARGINAL SVR THREAT ACROSS THIS AREA AS WELL.

..ROGERS.. 06/18/2013

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

ATTN...WFO...LMK...IND...PAH...ILX...LSX...

LAT...LON   39878853 39338707 39118603 38818545 38438563 38128606
            38198745 38368841 39038958 39598959 39828942 39968900
            39878853

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