Storm Prediction Center Mesoscale Discussion 1257

   Mesoscale Discussion 1257
   NWS Storm Prediction Center Norman OK
   0645 PM CDT Wed Jun 11 2025

   Areas affected...portions of eastern Iowa into extreme southwest
   Wisconsin

   Concerning...Severe Thunderstorm Watch 408...

   Valid 112345Z - 120115Z

   The severe weather threat for Severe Thunderstorm Watch 408
   continues.

   SUMMARY...Severe gusts will remain likely over at least the next
   couple of hours, though an instance of hail still cannot be ruled
   out.

   DISCUSSION...Storms have been growing upscale into a loosely
   organized convective cluster/possible MCS, with a history of
   continued severe gusts. These storms continue to progress eastward
   along a baroclinic boundary amid weak buoyancy. It is unclear how
   much longer robust severe-gust potential will persist with this
   storm cluster. However, severe gusts remain possible in the
   near-term given steep low-level lapse rates.

   ..Squitieri.. 06/11/2025

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

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

   LAT...LON   42469374 42969305 43299175 43239037 42929009 42549012
               42319040 42269105 42259264 42289330 42469374 

   MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
   MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN