MOST PROBABLE PEAK TORNADO INTENSITY...120-150 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN

ACUS11 KWNS 022241
SWOMCD
SPC MCD 022240 
INZ000-ILZ000-030015-

Mesoscale Discussion 0361
NWS Storm Prediction Center Norman OK
0540 PM CDT Wed Apr 02 2025

Areas affected...Portions of northeastern Illinois and northwestern
Indiana

Concerning...Tornado Watch 99...

Valid 022240Z - 030015Z

The severe weather threat for Tornado Watch 99 continues.

SUMMARY...Favorable corridor for tornadoes and damaging winds is
evident over the northern portion of Tornado Watch 99 from northeast
Illinois into northwest Indiana through at least 00Z.

DISCUSSION...A band of supercell clusters are tracking northeastward
from northeastern Illinois into northwestern Indiana. These storms,
along with warm-advection-driven evolving convection to the east,
are moving into an environment characterized by lower 60s dewpoints
and large clockwise-curved low-level hodographs (around 500 m2/s2
0-500m SRH per IWX VWP) along/south of the warm front draped across
northern Indiana. Despite a somewhat messy mode, this environment
may support an uptick in the intensity of supercell clusters over
the next hour or two, with an accompanying risk of tornadoes and
damaging wind gusts. Any supercells that can organize/intensify in
this zone would be capable of producing a strong tornado, though the
aforementioned mode evolution casts uncertainty in this scenario
unfolding at this time.

..Weinman.. 04/02/2025

ATTN...WFO...IWX...IND...LOT...ILX...

LAT...LON   40178838 40998775 41298743 41538686 41468638 41258594
            40948584 40578598 40178648 39908708 39808765 39988821
            40178838 

MOST PROBABLE PEAK TORNADO INTENSITY...120-150 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


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