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
https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fjg!9ZyDsdO6cBtCX_FK2KMQX3uUX6ksNF9z_zq2rs-BDLty2mZ_ia99sBYicqhYuxfqwsXL49KI3rHwlw0L3xVRfzP0ceM$ 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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--- scorpsmtpd
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