Storm Prediction Center Mesoscale Discussion 1478

   Mesoscale Discussion 1478
   NWS Storm Prediction Center Norman OK
   0430 PM CDT Sat Jun 29 2024

   Areas affected...southeast IN...southwest IN...far northern KY

   Concerning...Severe Thunderstorm Watch 485...

   Valid 292130Z - 292300Z

   The severe weather threat for Severe Thunderstorm Watch 485
   continues.

   SUMMARY...A threat for damaging wind gusts from 55-70 mph will
   remain probable with a small bowing cluster moving east-southeast
   towards the central Ohio Valley.

   DISCUSSION...A small bowing cluster was ongoing between the I-70 and
   I-74 corridors in the eastern IN. The Indianapolis VWP in the wake
   of this cluster continues to sample a belt of 35-50 kt mid-level
   westerlies which will aid in sustaining convective organization as
   this cluster likely tracks east-southeastward over the next few
   hours. Incipient Cb development is also occurring farther south
   closer to the OH River in southeast IN. It is plausible this may
   merge into the cluster across the IN/OH/KY border area and yield an
   overall southeast shift to convective development. This should
   spread across the I-75/I-71 corridors in southwest OH to northern
   KY. The greatest threat for damaging winds should be focused near
   the apex of the small bow.

   ..Grams.. 06/29/2024

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

   ATTN...WFO...RLX...JKL...ILN...

   LAT...LON   39868516 39618397 39318301 38928274 38538297 38408316
               38418350 38778488 38978533 39868516