ZCZC SPCSWOMCD ALL ACUS11 KWNS 072208 SPC MCD 072208 SDZ000-NDZ000-072345- Mesoscale Discussion 0871 NWS Storm Prediction Center Norman OK 0508 PM CDT Mon Jun 07 2021 Areas affected...Dakotas Concerning...Severe potential...Watch possible Valid 072208Z - 072345Z Probability of Watch Issuance...60 percent SUMMARY...Thunderstorm potential is increasing across portions of the Dakotas. Large hail and damaging wind threat may warrant a severe thunderstorm watch in the next 1-2 hours. DISCUSSION...Surface temperatures have soared to near 100F across central/north-central SD this afternoon. These readings are at/above forecast convective temperatures and recent visible satellite imagery supports this with deepening cu field and clustering occurring over southeast Corson County/northeast Dewey County, just west of Mobridge. This activity is evolving along the northeastern plume of steepest low-level lapse rates and should continue to mature over the next few hours. These trends are in line with earlier thinking regarding the possibility for organized convection evolving across this region, then spreading downstream toward southeast ND. Forecast soundings suggest hail/wind are the primary threats. WW may be warranted to account for this scenario. ..Darrow/Thompson.. 06/07/2021 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...FGF...ABR...BIS... LAT...LON 45820091 46780009 47419815 46139751 44839932 44810076 45820091 NNNN