Storm Prediction Center Mesoscale Discussion 260

   Mesoscale Discussion 0260
   NWS Storm Prediction Center Norman OK
   1114 PM CDT Sun Mar 15 2026

   Areas affected...Southeast Lower Michigan...northeast
   Indiana...northwest Ohio

   Concerning...Severe Thunderstorm Watch 56...

   Valid 160414Z - 160615Z

   The severe weather threat for Severe Thunderstorm Watch 56
   continues.

   SUMMARY...Isolated damaging wind risk continues with progressive
   squall line. However, a new watch is not currently anticipated.

   DISCUSSION...Strongly forced band of pre-frontal convection is
   propagating northeast across northeast IN/southern Lower MI and
   extreme northwest OH. Boundary layer air mass has gradually
   recovered into southeast MI over the last few hours which is
   contributing to weak buoyancy, immediately ahead of this convection.
   However, updrafts appear to be weakening a bit as lighting with the
   northern portions of the squall line is decreasing, and the linear
   nature of this activity is becoming more diffuse with time. Given
   the current trends a new watch is not currently anticipated.

   ..Darrow.. 03/16/2026

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

   ATTN...WFO...CLE...DTX...IWX...GRR...

   LAT...LON   41108512 42398467 42398349 40918403 41108512 

   MOST PROBABLE PEAK WIND GUST...55-70 MPH