377
ACUS11 KWNS 111431
SWOMCD
SPC MCD 111431
INZ000-111630-
MESOSCALE DISCUSSION 1922
NWS STORM PREDICTION CENTER NORMAN OK
0931 AM CDT TUE AUG 11 2026
AREAS AFFECTED...NORTHERN AND CENTRAL INDIANA
CONCERNING...SEVERE POTENTIAL...WATCH LIKELY
VALID 111431Z - 111630Z
PROBABILITY OF WATCH ISSUANCE...80 PERCENT
SUMMARY...THE THREAT FOR SEVERE WEATHER IS EXPECTED TO INCREASE THIS
MORNING, LIKELY NECESSITATING A WATCH ISSUANCE.
DISCUSSION...A GRADUAL INCREASE IN THUNDERSTORMS, INCLUDING
SPLITTING SUPERCELL STRUCTURES, HAS BEEN OBSERVED OVER NORTHWEST IN
OVER THE PAST HOUR OR SO. THAT ACTIVITY APPEARS TO BE ASSOCIATED
WITH A ZONE OF WARM ADVECTION OCCURRING TO THE NORTH OF AN OUTFLOW
BOUNDARY EXTENDING FROM WEST-CENTRAL THROUGH SOUTHEAST IN. REGIONAL
12Z SOUNDINGS SAMPLED A STRONGLY UNSTABLE ENVIRONMENT IN PLACE THIS
MORNING, WHICH IS LIKELY TO SUSTAIN THE ONGOING STORMS WITH SOME
LARGE HAIL AND LOCALLY DAMAGING WIND POTENTIAL. A GREATER SEVERE
WEATHER THREAT, MAINLY IN THE FORM OF DAMAGING WINDS WITH
SIGNIFICANT GUSTS, IS EXPECTED TO MOVE INTO THE AREA FROM THE
NORTHWEST IN ASSOCIATION WITH A BOWING MCS ONGOING ACROSS
NORTH-CENTRAL IL.
..MEAD/HART.. 08/11/2026
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...IWX...IND...LOT...
LAT...LON 40568700 41298690 41738638 41688496 40808486 40168505
39768545 39618586 40198692 40568700
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
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