Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 252230
SWOMCD
SPC MCD 252230
INZ000-ILZ000-252330-

MESOSCALE DISCUSSION 1617
NWS STORM PREDICTION CENTER NORMAN OK
0530 PM CDT MON AUG 25 2014

AREAS AFFECTED...IL/INDIANA

CONCERNING...SEVERE THUNDERSTORM WATCH 476...

VALID 252230Z - 252330Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 476
CONTINUES.

SUMMARY...ISOLATED LARGE HAIL AND GUSTY WINDS REMAIN POSSIBLE WITH
CONVECTION ACROSS WW476.

DISCUSSION...DISORGANIZED MCS HAS EVOLVED OVER NRN IL/INDIANA WITH
GENERAL MOVEMENT NOW SEWD AT ROUGHLY 20-25KT.  OUTFLOW HAS SURGED
ABOUT 10 MI AHEAD OF LEADING EDGE OF CONVECTION AND GUSTY WINDS ARE
POSSIBLE WITH THIS WIND SHIFT.  ADDITIONALLY...WDSSII ALGORITHM
SUGGESTS LARGE HAIL IS OCCURRING WITH THE STRONGEST UPDRAFTS OVER
TIPPECANOE COUNTY INDIANA AND LIVINGSTON/MARSHALL COUNTIES IN IL.
ACTIVITY SHOULD APPROACH THE SRN PORTION OF WW AROUND 26/00Z.

..DARROW.. 08/25/2014

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

ATTN...WFO...IWX...IND...LOT...ILX...DVN...

LAT...LON   40888966 42238892 40738546 39428617 40888966




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