ACUS11 KWNS 140057
SWOMCD
SPC MCD 140057=20
WIZ000-140230-

Mesoscale Discussion 0412
NWS Storm Prediction Center Norman OK
0757 PM CDT Mon Apr 13 2026

Areas affected...West-central into central Wisconsin

Concerning...Tornado Watch 103...

Valid 140057Z - 140230Z

The severe weather threat for Tornado Watch 103 continues.

SUMMARY...A threat for tornadoes will continue into the evening as
low-level shear increases. Furthermore, upscale growth of ongoing
supercells will also lead to an increase threat for severe winds.

DISCUSSION...Two supercells are ongoing west and northeast of Black
River Falls. The high-precipitation character of these storms has
become more apparent over the last couple of hours. The storm west
of BRF shows a strong, but broad mesocyclone along with a strong
rear flank downdraft signal on radar. With continued warm advection
and upscale growth, an increasing threat for severe winds may
develop as they progress east-southeast. To the east, cooler air is
noted in surface observations which would suggest the strongest
activity may turn slightly southward into greater buoyancy. The
tornado threat will continue, however, as large low-level hodographs
are evident on KARX and KMKX. Large hail could occur on an isolated
basis, but storm mode will likely become less favorable with time.

..Wendt.. 04/14/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7kJqrnHFxEVIlZrShEriBiix6TGOY8q6enGFQWvj7VWCM8gGHNGEBT9IQVgr095Vy6t-yyhun= 1BywaiukNxaCYUL87w$ for graphic product...

ATTN...WFO...GRB...MKX...ARX...MPX...

LAT...LON 44189145 44659094 44909017 44698951 43988866 43698884
43508916 43488972 43859068 44189145=20

MOST PROBABLE PEAK TORNADO INTENSITY...100-130 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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