Storm Prediction Center Mesoscale Discussion 1054

   Mesoscale Discussion 1054
   NWS Storm Prediction Center Norman OK
   0759 PM CDT Tue Jun 09 2026

   Areas affected...much of Nebraska into southeastern South Dakota and
   far western Iowa

   Concerning...Tornado Watch 296...

   Valid 100059Z - 100230Z

   The severe weather threat for Tornado Watch 296 continues.

   SUMMARY...Supercells and linear clusters remain capable of all
   hazards. A downstream watch for eastern NE and possibly into
   southeastern SD and/or western IA is likely this evening.

   DISCUSSION...Across Tornado Watch #296, several clusters of severe
   storms have organized over the past couple of hours. While
   intensification has been slow, the environment remains very unstable
   and will become increasingly sheared this evening. Storm mode
   remains mixed with supercells and linear clusters with a risk for
   severe wind gusts, large to very large hail and a couple of
   tornadoes.

   Additional storm development is expected across central NE tonight
   as ascent increases with the nocturnal low-level jet. Further
   intensification of the western supercells and line segments is
   expected, along with the linear the cluster along I-80 which has
   produced recent severe gusts to 80 mph. Tornado potential will be
   maximized with any discrete/semi-discrete supercells across central
   and northern NE near and after sunset. RAP sounding show a 50+ kt
   low-level jet increasing low-level hodograph size into the overnight
   hours. Given the continued risk and potential for storms to move
   east of the current watch, the severe risk continues and a
   downstream watch is likely needed this evening.

   ..Lyons/Smith.. 06/10/2026

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

   ATTN...WFO...FSD...OAX...GID...LBF...UNR...

   LAT...LON   43030197 42989723 42779635 42439608 42019582 41089568
               40529630 40329688 40269780 40319845 40459903 40789972
               41090075 41400173 42070201 43030197 

   MOST PROBABLE PEAK TORNADO INTENSITY...100-125 MPH
   MOST PROBABLE PEAK WIND GUST...65-80 MPH
   MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN