ACUS11 KWNS 111856
SWOMCD
SPC MCD 111856=20
IAZ000-MNZ000-NEZ000-SDZ000-112130-

Mesoscale Discussion 1250
NWS Storm Prediction Center Norman OK
0156 PM CDT Wed Jun 11 2025

Areas affected...northern Iowa...southern Minnesota

Concerning...Severe potential...Watch possible=20

Valid 111856Z - 112130Z

Probability of Watch Issuance...60 percent

SUMMARY...Severe wind and hail risk to continue through the
afternoon/early evening.

DISCUSSION...A broken line of thunderstorm activity that has a
history of producing 50-60 mph winds continues to show winds around
50-60 mph around 2kft on radar. Additional development is also noted
on visible satellite on the southern periphery of this broken line.
Some uncertainty remains on the duration of this wind threat, given
the downstream air mass is fairly mixed and less unstable. Steep
lapse rates and dew point depressions in the 30s to 40s may support
strong to severe gusts with outflow as these storms advance
eastward.=20

Additional thunderstorm development is expected later on in the
afternoon with the ejecting wave, which may be supercellular with
potential for damaging wind/hail. As this may be the time period of
more appreciable threat, watch timing remains uncertain. However,
should the broken line advancing east out of SD continue to
intensify, a watch may be needed to cover this threat in the near
term.

..Thornton/Guyer.. 06/11/2025

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!9oHPU-xUJJYAkYfB7J8T6HvQTiZp9xYIuEvXNTxG49vi6AVEW7IRmaYGQOUjOIYEcEByptlu4= 2Vx93CmEQMKzvYh-0U$ for graphic product...

ATTN...WFO...DVN...ARX...MPX...DMX...FSD...OAX...

LAT...LON 42869724 43339692 43949641 43989632 44219586 44219494
44079366 43979244 43629188 42679165 42339175 42049218
42029427 42119588 42309691 42339698 42659732 42869724=20

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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