Storm Prediction Center Mesoscale Discussion 1084

   Mesoscale Discussion 1084
   NWS Storm Prediction Center Norman OK
   0459 AM CDT Thu Jun 11 2026

   Areas affected...Southeast Nebraska into south-central Iowa

   Concerning...Severe Thunderstorm Watch 310...

   Valid 110959Z - 111200Z

   The severe weather threat for Severe Thunderstorm Watch 310
   continues.

   SUMMARY...With an organizing MCV moving into southwest Iowa, the
   threat for strong/severe surface gusts is expected to increase.

   DISCUSSION...Velocity data from KOAX suggest that an MCV has
   recently developed centered east of Lincoln, NE. Observations from
   the past 1-2 hours have suggested that the low-level thermodynamic
   environment can support strong/severe surface gusts as gusts from
   50-70 mph have been measured from south-central into southeast
   Nebraska. This MCV is likely to continue east along the buoyancy
   gradient, supported by a 50-55 kt low-level jet. Strong/severe
   surface gusts will be more probable at least into southwest Iowa.
   Temperatures are slightly cooler in south-central Iowa, though
   theta-e advection will improve the environment by daybreak. Large
   hail will remain possible, but should be more spatially limited
   owing to a less favorable storm mode. A tornado or two is
   conditionally possible as well.

   ..Wendt.. 06/11/2026

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

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

   LAT...LON   40409698 41009712 41359650 41529385 41269289 40739276
               40309343 40319559 40409698 

   MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
   MOST PROBABLE PEAK WIND GUST...55-70 MPH
   MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN