Mesoscale Discussion 1682
   NWS Storm Prediction Center Norman OK
   1120 PM CDT Sun Sep 06 2020

   Areas affected...Lower MI

   Concerning...Severe Thunderstorm Watch 488...

   Valid 070420Z - 070615Z

   The severe weather threat for Severe Thunderstorm Watch 488
   continues.

   SUMMARY...Clusters of strong storms will spread across the remainder
   of ww488 over the next several hours. Hail remains the primary risk.

   DISCUSSION...Back edge of a progressive short-wave trough is
   advancing across Lake MI. Several thunderstorm clusters have evolved
   ahead of this feature within a focused zone of low-level warm
   advection beneath a veered LLJ. While hail remains the primary risk
   with this activity, latest MRMS data suggests most hail cores are
   generally less than 1 inch. While storm inflow is from a more
   buoyant air mass upstream across lower Lake MI, convection will
   gradually spread east into a region that may become less supportive
   of intense updrafts capable of producing severe hail.

   ..Darrow.. 09/07/2020

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

   ATTN...WFO...DTX...APX...GRR...

   LAT...LON   42788683 44358679 44908279 43328280 42788683