Storm Prediction Center Mesoscale Discussion 985

   Mesoscale Discussion 0985
   NWS Storm Prediction Center Norman OK
   1139 PM CDT Thu Jun 04 2026

   Areas affected...Parts of south-central/southeast SD into far
   northern NE

   Concerning...Severe Thunderstorm Watch 273...

   Valid 050439Z - 050615Z

   The severe weather threat for Severe Thunderstorm Watch 273
   continues.

   SUMMARY...Some severe threat may persist into the early overnight
   hours, though an eventual weakening trend is expected with time.

   DISCUSSION...A storm cluster has grown in size late this evening
   from central SD Into far northern NE, along and north of a surface
   boundary. Measured severe gusts have recently been noted across
   south-central SD and far northern NE, and some severe-wind threat
   may continue after Midnight CDT, as this cluster moves eastward
   across a moderately unstable environment. Stronger embedded updrafts
   may also be capable of isolated hail. 

   With only modest organization noted with the ongoing cluster, and
   increasing CINH downstream, an eventual weakening trend is expected
   overnight. Depending on short-term observational trends, a local
   expansion of WW 273 may eventually be needed, but longevity of the
   severe threat appears too limited for new watch issuance.

   ..Dean/Guyer.. 06/05/2026

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

   ATTN...WFO...FSD...OAX...ABR...LBF...UNR...

   LAT...LON   44439972 44669895 44639805 44369759 44059718 43759708
               43419726 43059782 42689829 42569920 42499990 42759999
               43159954 44439972 

   MOST PROBABLE PEAK WIND GUST...55-70 MPH
   MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN