Storm Prediction Center Mesoscale Discussion 1085

   Mesoscale Discussion 1085
   NWS Storm Prediction Center Norman OK
   0633 AM CDT Thu Jun 11 2026

   Areas affected...Southern Iowa and far northern Missouri

   Concerning...Severe Thunderstorm Watch 310...

   Valid 111133Z - 111300Z

   The severe weather threat for Severe Thunderstorm Watch 310
   continues.

   SUMMARY...The threat for 60-80 mph winds will continue in southern
   Iowa. Brief tornadoes associated with the MCS will also be a
   concern. With discrete development ahead of the MCS possible, trends
   will need to be monitored for a potentially greater tornado threat.

   DISCUSSION...A compact MCS with a history of 60-80 mph winds and a
   couple of brief tornadoes continues east within southern Iowa. Ahead
   of this MCS, weak thunderstorm development has been noted in
   south-central Iowa. The primary concern this morning will continue
   to be severe/damaging winds as the downstream environment begins to
   further destabilize. A secondary concern that needs to be monitored
   is the potential for stronger discrete development ahead of the MCS
   near the surface boundary. The low-level jet core is expected to
   move into more of central/eastern Iowa this morning. This could lead
   to a greater tornado risk if discrete storms can form/mature.

   ..Wendt.. 06/11/2026

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

   ATTN...WFO...DVN...DMX...EAX...OAX...

   LAT...LON   40609549 41399531 41429306 41359184 41039154 40799159
               40459197 40329344 40329369 40479512 40609549 

   MOST PROBABLE PEAK TORNADO INTENSITY...100-125 MPH
   MOST PROBABLE PEAK WIND GUST...65-80 MPH
   MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN