Mesoscale Discussion 1787
   NWS Storm Prediction Center Norman OK
   0831 PM CST Tue Nov 10 2020

   Areas affected...Lower Michigan...Northern Indiana

   Concerning...Severe Thunderstorm Watch 506...

   Valid 110231Z - 110400Z

   The severe weather threat for Severe Thunderstorm Watch 506
   continues.

   SUMMARY...Severe threat will spread across the eastern portions of
   ww506 over the next 1-2 hours.

   DISCUSSION...Latest water-vapor imagery continues to depict the
   leading edge of large-scale forcing for ascent is spreading across
   the central Great Lakes region. Long-lived well-defined squall line
   that developed over IL has progressed across LM and currently
   extends from northern lower MI-northwest IN. This activity is
   surging east at roughly 40kt and should exit the eastern edge of
   ww506 within the next few hours. However, the strongest wind speeds
   along the squall line have gradually decreased and should continue
   to weaken as this convection spreads east tonight.

   ..Darrow.. 11/11/2020

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

   ATTN...WFO...DTX...APX...IWX...GRR...LOT...

   LAT...LON   41338699 44158547 44158407 41348564 41338699