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Mesoscale Discussion 1177
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   Mesoscale Discussion 1177
   NWS Storm Prediction Center Norman OK
   0319 PM CDT Wed Jun 15 2022

   Areas affected...portions of western/central  WI

   Concerning...Tornado Watch 371...

   Valid 152019Z - 152145Z

   The severe weather threat for Tornado Watch 371 continues.

   SUMMARY...Increasing potential for tornadoes and large hail expected
   in a corridor across west-central into central WI over the next
   couple of hours.

   DISCUSSION...Initially messy convection developing along and just
   ahead of the surface cold front across northeast IA and western WI
   is showing signs of organization over the last 15-30 minutes. This
   activity is moving into a corridor of backed low-level surface
   winds. Increasing rotation aloft has been noted in KARX data and
   this trend may continue with eastward extent over the next couple of
   hours. Latest VWP data from KARX continues to show an enlarged,
   favorably curved low-level hodograph with 0-1 SRH values now around
   250-300 m2/s2 as low-level flow has increased somewhat over the last
   couple of hours. As convection encounters this corridor of more
   favorable low-level shear within a strongly unstable environment, an
   increase in tornado potential as well as large hail is expected.

   ..Leitman.. 06/15/2022

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

   ATTN...WFO...GRB...MKX...ARX...

   LAT...LON   43989132 44389063 44618986 44588956 44368927 44078924
               43698946 43259013 43149069 43129127 43179140 43989132 

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