Storm Prediction Center Mesoscale Discussion 1073

   Mesoscale Discussion 1073
   NWS Storm Prediction Center Norman OK
   0427 PM CDT Wed Jun 10 2026

   Areas affected...portions of northern Missouri and southern Iowa

   Concerning...Tornado Watch 303...305...

   Valid 102127Z - 102230Z

   The severe weather threat for Tornado Watch 303, 305 continues.

   SUMMARY...Multiple tornadic supercells are ongoing across northern
   MO and southern IA. The environment remains very favorable for
   tornadoes, some of which could be strong to intense.

   DISCUSSION...Recent radar imagery and storm reports show several
   tornadic supercells are ongoing across northern MO and southern IA
   in Tornado Watches 303 and 305. The environment downstream of these
   storms is modifying in the wake of an earlier MCS and remains highly
   conducive for supercells and tornadoes. Backed low-level flow and
   deep veering along the modified boundary is supporting STP values of
   3-4. A recent, likely strong tornado (VROT 50+ kt and TDS > 10k ft),
   over Putnam County, MO confirms the environment is supportive of
   strong to intense tornadoes and will likely remain so into the early
   evening.

   ..Lyons.. 06/10/2026

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

   ATTN...WFO...LSX...DVN...DMX...EAX...

   LAT...LON   40949367 41039213 40789149 40219150 39899197 39849242
               39859311 39879377 39979421 40129428 40409418 40949367 

   MOST PROBABLE PEAK TORNADO INTENSITY...120-145 MPH
   MOST PROBABLE PEAK WIND GUST...65-80 MPH
   MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN