Mesoscale Discussion 1930 NWS Storm Prediction Center Norman OK 0228 PM CDT Tue Aug 11 2026 Areas affected...east-central Illinois into west-central and southern Indiana Concerning...Severe Thunderstorm Watch 565... Valid 111928Z - 112130Z The severe weather threat for Severe Thunderstorm Watch 565 continues. SUMMARY...Damaging wind potential may increase with more recent thunderstorm development, which would potentially require an extension of the watch into portions of southwest Indiana. The severe threat is expected to largely spread southeast into the watch area over the next hour, so an additional watch to the west in IL is not currently anticipated. LAT...LON 39828835 40558847 40708746 40588685 39728618 39098568 38728585 38788656 39058739 39478786 39828835 MOST PROBABLE PEAK WIND GUST...55-70 MPH MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN