ACUS11 KWNS 310430
SWOMCD
SPC MCD 310429=20
INZ000-ILZ000-WIZ000-IAZ000-310630-

Mesoscale Discussion 0301
NWS Storm Prediction Center Norman OK
1129 PM CDT Mon Mar 30 2026

Areas affected...Central Iowa to southern Lake Michigan

Concerning...Severe Thunderstorm Watch 77...

Valid 310429Z - 310630Z

The severe weather threat for Severe Thunderstorm Watch 77
continues.

SUMMARY...Large hail threat continues with storms tonight, along
with some risk for gusty winds.

DISCUSSION...Back edge of a short-wave trough appears to extend from
southwest MN-eastern NE. Scattered deep convection has developed
ahead of this feature, partially aided by a strong but veered LLJ.
Sustained low-level warm advection will continue much of the night
along this corridor so new development is possible in addition to
the two main clusters that are currently observed. Latest MESH data
suggests large hail is noted within the stronger updrafts in these
clusters, and this should be the primary concern into the early
morning hours.

..Darrow.. 03/31/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-iIVduPUjupLMnsn8PyyLKj1xQoFC0VZH2ECr7DA0i1v9VFPwzr1IT4hgjaffwYXgE3mCu29L= RsbuReujGjGntXW_xc$ for graphic product...

ATTN...WFO...LOT...MKX...DVN...ARX...DMX...

LAT...LON 42549463 42878745 41438746 41109466 42549463=20

MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


=3D =3D =3D
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