170
ACUS11 KWNS 290819
SWOMCD
SPC MCD 290818
ILZ000-IAZ000-MOZ000-290945-
MESOSCALE DISCUSSION 1832
NWS STORM PREDICTION CENTER NORMAN OK
0318 AM CDT TUE JUL 29 2025
AREAS AFFECTED...SOUTHEAST IA AND NORTHWEST IL
CONCERNING...SEVERE THUNDERSTORM WATCH 555...
VALID 290818Z - 290945Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 555
CONTINUES.
SUMMARY...SPORADIC SEVERE GUSTS SHOULD FINALLY DIMINISH BEFORE DAWN,
BUT MAY LINGER BEYOND THE 09Z EXPIRATION OF WW 555. A LOCAL
EXTENSION IN TIME/AREA IS POSSIBLE, WITH AN ADDITIONAL WW ISSUANCE
REMAINING UNLIKELY.
DISCUSSION...AFTER A FLURRY OF MEASURED SEVERE GUSTS AND WIND DAMAGE
WITH A BOW ACROSS NORTHEAST TO EAST-CENTRAL IA, OVERALL MCS
STRUCTURE HAS WEAKENED AGAIN UPON APPROACH TO SOUTHEAST IA. IT SEEMS
UNLIKELY THAT ANOTHER BOW EVOLUTION PRODUCING A COHERENT SEVERE
SWATH WILL OCCUR AGAIN AS THE WESTERN PORTION OF THE LINE HAS BECOME
ORIENTED WEST/EAST. WITH A LACK OF LOW-LEVEL MASS RESPONSE AHEAD OF
THE CLUSTER, BUT STILL AMPLE BUOYANCY TO THE IA/MO/IL BORDER AREA,
STRONG TO SPORADIC SEVERE GUSTS WILL REMAIN POSSIBLE BUT SHOULD
DIMINISH OVER THE NEXT COUPLE HOURS.
..GRAMS/HART.. 07/29/2025
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...LOT...ILX...DVN...DMX...
LAT...LON 42289086 41728955 41318931 41018934 40758952 40428995
40379046 40409172 40669197 41339228 41519152 42289086
MOST PROBABLE PEAK WIND GUST...55-70 MPH
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