Mesoscale Discussion 0991
   NWS Storm Prediction Center Norman OK
   0553 PM CDT Sun May 26 2024

   Areas affected...southeast Wisconsin and far northern Illinois

   Concerning...Severe potential...Watch unlikely 

   Valid 262253Z - 270000Z

   Probability of Watch Issuance...20 percent

   SUMMARY...The risk for a couple brief tornadoes looks to continue
   for the next hour or two. The threat should quickly wane as storms
   approach the lake.

   DISCUSSION...As of 2250 UTC, regional radar analysis showed a line
   of storms ongoing beneath an upper low over parts of southeast WI
   and far northern IL. Within the line several small supercell
   structures have developed and have a history of brief tornadoes.
   Driven by strong low-level buoyancy favorable for stretching
   abundant ambient vertical vorticity, the risk for brief tornadoes
   looks to continue for another hour or two. The most favorable
   location for the tornado risk appears to be the northern most
   section where the line orientation is more orthogonal to the
   deep-layer flow. Still, brief tornadoes are possible with any small
   supercell structures able to develop. Storms should begin to weaken
   as they encounter the lake breeze boundary where temperatures fall
   to the low 60s and inhibition increases. Given the limited coverage
   and short duration, a WW is unlikely, though trends will be
   monitored.

   ..Lyons.. 05/26/2024

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

   ATTN...WFO...LOT...MKX...

   LAT...LON   43078879 43198885 43338873 43388861 43418845 43318816
               43178804 42958792 42668792 42428805 42298816 42178834
               42138862 42148874 42368870 42578865 42648867 43078879