ACUS11 KWNS 272058
SWOMCD
SPC MCD 272058
KYZ000-INZ000-ILZ000-MOZ000-272230-

Mesoscale Discussion 0575
NWS Storm Prediction Center Norman OK
0358 PM CDT Mon Apr 27 2026

Areas affected...Southern IL...far western KY...and far southwestern
IN

Concerning...Tornado Watch 162...

Valid 272058Z - 272230Z

The severe weather threat for Tornado Watch 162 continues.

SUMMARY...Monitoring for supercell development and the potential for
strong-intense tornadoes over the next couple hours.

DISCUSSION...Convection is gradually increasing across far southern
IL and vicinity, where boundary-layer dewpoints have increased to
near 70F -- resulting in a strongly unstable air mass. Additionally,
the PAH VWP and recent mesoanalysis data indicate a large
clockwise-curved hodograph, with effective SRH increasing to around
300 m2/s2. The strong buoyancy, enhanced low-level streamwise
vorticity, and expected discrete storm mode will favor an increasing
risk of supercells capable of producing strong-intense tornadoes and
very large hail/damaging winds over the next couple hours.

..Weinman.. 04/27/2026

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...PAH...LSX...

LAT...LON   36958876 37078929 37438966 37768967 38138940 38388889
            38438843 38438790 38028755 37598768 37048836 36958876

MOST PROBABLE PEAK TORNADO INTENSITY...140-170 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN