Storm Prediction Center Mesoscale Discussion 1175

   Mesoscale Discussion 1175
   NWS Storm Prediction Center Norman OK
   1127 PM CDT Wed Jun 17 2026

   Areas affected...Southeastern Indiana...southwest Ohio...and far
   northern Kentucky

   Concerning...Tornado Watch 344...347...

   Valid 180427Z - 180600Z

   The severe weather threat for Tornado Watch 344, 347 continues.

   SUMMARY...The tornado risk is focusing across southeastern Indiana
   into southwestern Ohio tonight -- within Tornado Watches 344/347.

   DISCUSSION...Within a broad area of stratiform rain spreading across
   IN into OH, lower 70s temperatures amid upper 60s dewpoints are
   still yielding surface-based inflow parcels for a few
   deeper/embedded rotating updrafts. The ILN VWP is sampling the core
   of a 60-kt LLJ overspreading this activity, which is supporting a
   very large, clockwise curved hodograph (around 450 m2/s2 0-500m
   SRH). Despite marginal buoyancy, this wind profile is supporting
   efficient mesocylogenesis from southeastern IN into southwestern OH.
   The primary tornado risk should continue east-northeastward beneath
   the core of the LLJ and in a region of enhanced surface pressure
   falls tonight. Given the strong low-level shear/streamwise vorticity
   and supercell structures, a strong tornado remains possible with the
   longer-lived storms.

   ..Weinman.. 06/18/2026

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

   ATTN...WFO...ILN...LMK...IND...

   LAT...LON   38628498 38698588 39048618 39388607 39878423 39838384
               39658351 39338339 38928356 38718403 38628498 

   MOST PROBABLE PEAK TORNADO INTENSITY...100-125 MPH
   MOST PROBABLE PEAK WIND GUST...55-70 MPH
   MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN