687 

ACUS11 KWNS 140443
SWOMCD
SPC MCD 140443
MIZ000-WIZ000-140615-

Mesoscale Discussion 0416
NWS Storm Prediction Center Norman OK
1143 PM CDT Mon Apr 13 2026

Areas affected...2Southern Wisconsin into central Lower Michigan

Concerning...Severe Thunderstorm Watch 106...107...

Valid 140443Z - 140615Z

The severe weather threat for Severe Thunderstorm Watch 106, 107
continues.

SUMMARY...Occasional damaging gusts of 60-70 mph and isolated large
hail near 1 inch in diameter will be possible along the conglomerate
outflow through 06z.

DISCUSSION...Thunderstorms have grown upscale into an extensive QLCS
with a conglomerate cold pool extending from northeast IA across
southern WI and into central Lower MI.  The predominately east-west
orientation of the QLCS in westerly flow aloft suggests that most of
the stronger updrafts will remain slightly to the cool side of the
southeast-moving outflow.  A few smaller scale bowing segments will
be possible, especially with cell mergers into the line, which is
more probable across central Lower MI.  Occasional damaging outflow
gusts of 60-70 mph and hail near 1 inch in diameter will be the main
threats through at least 06z.

..Thompson.. 04/14/2026

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

ATTN...WFO...DTX...APX...GRR...GRB...MKX...ARX...

LAT...LON   43018778 42908947 43069064 43239059 43698990 43728895
            43798849 43998750 44048675 44408601 44578467 44308394
            43868373 43588401 43348622 43018778

MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN