Mesoscale Discussion 0047
   NWS Storm Prediction Center Norman OK
   0725 PM CST Sat Jan 11 2020

   Areas affected...central/southern Lower Michigan

   Concerning...Winter mixed precipitation 

   Valid 120125Z - 120730Z

   SUMMARY...Freezing rain and sleet will continue/develop across
   southern and central Lower Michigan tonight. Snow may mix in as well
   at times.

   DISCUSSION...An upper-level shortwave trough is lifting northeast
   across the Midwest and Great Lakes with a surface front south of the
   Great Lakes into the Ohio Valley. The surface freezing line is
   oriented southwest-northeast across southern Lower Michigan with a
   warm nose still evident between 850-700 mb in 0000 UTC DTX and ILX
   soundings. Much of the lifting is occurring above 700 mb (below 0C)
   with light freezing rain/drizzle resulting across a relatively
   narrow corridor across Lower Michigan. Sleet and snow will also be
   possible as the warm nose erodes tonight/overnight and surface
   temperatures continue to fall. Precipitation rates will likely
   increase in the coming hours as stronger forcing for ascent arrives
   leading to accumulating ice, sleet, and snow. Precipitation will
   likely continue through 0700 UTC and decreasing from southwest to
   northeast.

   ..Nauslar/Guyer.. 01/12/2020

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

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

   LAT...LON   42628340 42318395 41918549 41908633 42268651 42758653
               43118600 43638420 43888339 43898282 43458249 43168246
               42928266 42628340