Storm Prediction Center Mesoscale Discussion 2017

   Mesoscale Discussion 2017
   NWS Storm Prediction Center Norman OK
   0447 PM CDT Tue Aug 27 2024

   Areas affected...Northern IL and vicinity

   Concerning...Severe potential...Watch possible 

   Valid 272147Z - 272315Z

   Probability of Watch Issuance...60 percent

   SUMMARY...Strong to severe storms are possible into early evening.

   DISCUSSION...Storm development appears to be underway near the IL/WI
   border, with a very unstable (MLCAPE of 3000-4000 J/kg) environment.
   Deep-layer shear is somewhat favorable for organized convection
   given the favorable buoyancy, and at least isolated storms capable
   of hail and damaging gusts may develop into early evening. Storm
   coverage across the region is uncertain, but there will be some
   potential for modest upscale growth if several storms can develop
   within this regime, which would result in an increasing
   damaging-wind threat. Watch issuance is possible in order to address
   these hazards.

   ..Dean/Gleason.. 08/27/2024

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

   ATTN...WFO...IWX...LOT...ILX...MKX...DVN...

   LAT...LON   41049145 42308962 42718896 42818852 42908807 42698765
               42058671 41108659 40728938 40629083 40699160 41049145