409
ACUS11 KWNS 132022
SWOMCD
SPC MCD 132022
INZ000-KYZ000-ILZ000-132145-
MESOSCALE DISCUSSION 1970
NWS STORM PREDICTION CENTER NORMAN OK
0322 PM CDT THU AUG 13 2026
AREAS AFFECTED...CENTRAL TO SOUTHERN INDIANA TO THE OHIO RIVER
CONCERNING...SEVERE THUNDERSTORM WATCH 582...
VALID 132022Z - 132145Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 582
CONTINUES.
SUMMARY...A THREAT OF SEVERE WIND GUSTS AND MARGINAL HAIL WILL
PERSIST INTO CENTRAL TO SOUTHERN INDIANA.
DISCUSSION...A CLUSTER OF STORMS ON THE SOUTHERN PERIPHERY OF THE
DYING MCS HAS REMAINED RELATIVELY STRONG/PERSISTENT TODAY ACROSS
CENTRAL IL, AND IS NOW MOVING INTO IN. THESE STORMS CONTINUE TO
TRACK ALONG THE INSTABILITY GRADIENT, WITH ACCESS TO A VERY MOIST
AIR MASS (PWAT > 2.20") AND AROUND 3000 J/KG MLCAPE.
RECENT RADAR TRENDS SHOW OTHER STORMS DEVELOPING AHEAD/SOUTHEAST OF
THE MAIN STORM CLUSTER, INDICATIVE OF THE UNCAPPED AIR MASS.
LOW-LEVEL WIND FIELDS ARE WEAK, BUT AT LEAST SOME RIGHTWARD
PROPAGATION IS POSSIBLE INTO THE PEAK HEATING HOURS. LOCALIZED
SEVERE WIND GUSTS WILL REMAIN THE MAIN THREAT, THOUGH MARGINAL HAIL
MAY OCCUR FROM TIME TO TIME.
..JEWELL.. 08/13/2026
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...ILN...LMK...IND...ILX...
LAT...LON 39958722 39318511 38998502 38698517 38628559 38638661
38898701 39488757 39698778 39958722
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
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