ACUS11 KWNS 110500
SWOMCD
SPC MCD 110500=20
INZ000-ILZ000-110630-

Mesoscale Discussion 1081
NWS Storm Prediction Center Norman OK
1200 AM CDT Thu Jun 11 2026

Areas affected...Portions of central and east-central Illinois into
western Indiana.

Concerning...Severe Thunderstorm Watch 309...

Valid 110500Z - 110630Z

The severe weather threat for Severe Thunderstorm Watch 309
continues.

SUMMARY...Isolated damaging wind gusts will persist for a few more
hours.

DISCUSSION...A line of storms continues east across central
Illinois. This line of storms has a history of wind damage and shows
strong outbound winds from KILX. Expect this line of storms to
persist eastward into a moderately unstable airmass (2000 to 2500
J/kg MUCAPE per SPC mesoanalysis) with a strengthening low-level jet
feeding this activity from the southwest. This line of storms will
likely pose a continued damaging wind threat for a few more hours
before eventually weakening. Severe thunderstorm watch 309 has been
expanded eastward/southeastward to cover this continued threat.

..Bentley.. 06/11/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-dlHdi-x_UgJpH-NLjAzoPoodmsJT6Ov-DVTB1avf3lbKYz3vmW0tjS16EPJ-eHsYDOXmBq4V= osUgZ0TBgW6ExscBRI$ for graphic product...

ATTN...WFO...IND...LOT...ILX...LSX...

LAT...LON 39589021 39919034 40048981 40288921 40618883 40678829
40538764 40118698 39698697 39038722 38948776 39088857
39308941 39589021=20

MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


=3D =3D =3D
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