Mesoscale Discussion 1257
   NWS Storm Prediction Center Norman OK
   1136 PM CDT Fri Jul 17 2020

   Areas affected...much of Minnesota...northwestern
   Wisconsin...western Upper Peninsula of Michigan...and far
   northeastern South Dakota

   Concerning...Severe Thunderstorm Watch 380...381...

   Valid 180436Z - 180630Z

   The severe weather threat for Severe Thunderstorm Watch 380, 381
   continues.

   SUMMARY...The severe threat persists across the discussion area,
   with widespread strong to severe wind gusts expected from central
   Minnesota into northwestern Wisconsin in the next couple of hours.

   DISCUSSION...Minnesota portions of the ongoing MCS have taken on a
   better satellite and radar presentation over the past hour or so. 
   This can be attributed to strengthening low-level wind fields and
   strongly buoyant parcels fueling ongoing storms, with 850 hPa wind
   fields now at 40-45 knots at both KMPX and KFSD.  The downstream
   airmass ahead of the storms is most strongly buoyant across
   Minnesota, where 4000-5000 J/kg MUCAPE still exists and very high
   dewpoints have kept convection nearly surface based despite loss of
   daytime heating.  Strong to severe wind gusts have even been noted
   well behind the initial gust front in northeastern South Dakota and
   vicinity in the past hour.  These convective trends should continue
   for at least the next 2-3 hours while shifting
   eastward/southeastward toward western Wisconsin and central
   Minnesota (including the Minneapolis/St. Paul metro areas).

   ..Cook/Guyer.. 07/18/2020

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

   ATTN...WFO...MQT...GRB...DLH...ARX...MPX...FGF...FSD...ABR...

   LAT...LON   47599192 47519285 47069401 46069573 45889605 45899669
               45879778 45649836 45229837 45049784 45029706 44629595
               44329521 44229361 44509227 44709084 44718969 45198893
               46118896 46698871 47648857 48008876 47929005 47599192