ACUS11 KWNS 132038
SWOMCD
SPC MCD 132038=20
OHZ000-MIZ000-INZ000-ILZ000-132215-

Mesoscale Discussion 0403
NWS Storm Prediction Center Norman OK
0338 PM CDT Mon Apr 13 2026

Areas affected...portions of northern Indiana into extreme
southwestern Lower Michigan

Concerning...Severe Thunderstorm Watch 102...

Valid 132038Z - 132215Z

The severe weather threat for Severe Thunderstorm Watch 102
continues.

SUMMARY...A severe wind/hail threat should continue with ongoing
storms over the next few hours.

DISCUSSION...A multicellular cluster of thunderstorms is persisting
eastward amid a heated boundary layer (characterized by surface
temperatures over 80 F), and modest vertical wind shear. Multiple
wind damage reports, along with measured gusts around 50 kts have
been received over the past few hours. MRMS MESH has also indicated
the possibility of 1+ inch hail occurring with some of the stronger
storms as well. Given 60+ F surface dewpoints and resultant 1500+
J/kg MLCAPE preceding the storms, a severe wind/hail threat should
continue with these storms for at least a few more hours. Given
adequate surface-based instability preceding supercell structures, a
tornado cannot be completely ruled out.

..Squitieri.. 04/13/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9JrOsEOakAh-n_iUTM-alwkjeUJa7h03BgfKgKuvHJ6HHFcEIgxLdHeh2Ga15mc2zu4R4JYgX= zY5K_gV9U1pWxEWGLY$ for graphic product...

ATTN...WFO...IWX...GRR...LOT...

LAT...LON 40868754 41528721 42008657 42108576 41988511 41708475
41278480 41028514 40878580 40798641 40798713 40868754=20

MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN


=3D =3D =3D
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