TZUTC: 0000   
   MSGID: 167382.weather@1:2320/105 2d9c47af   
   PID: Synchronet 3.21a-Linux master/123f2d28a Jul 12 2025 GCC 12.2.0   
   TID: SBBSecho 3.28-Linux master/123f2d28a Jul 12 2025 GCC 12.2.0   
   BBSID: CAPCITY2   
   CHRS: ASCII 1   
   FORMAT: flowed   
   ACUS11 KWNS 061826   
   SWOMCD   
   SPC MCD 061825=20   
   IAZ000-MNZ000-NEZ000-SDZ000-070030-   
      
   Mesoscale Discussion 2250   
   NWS Storm Prediction Center Norman OK   
   1225 PM CST Sat Dec 06 2025   
      
   Areas affected...Far southeast South Dakota and northwestern Iowa   
      
   Concerning...Heavy snow=20   
      
   Valid 061825Z - 070030Z   
      
   SUMMARY...Periods of heavy snowfall are developing across portions   
   of far southeastern SD, and will continue to expand into   
   northwestern IA within an hour or two. Snowfall rates of 1 to 1.5"   
   per hour can be expected.   
      
   DISCUSSION...An area of moderate to heavy snow is expected to   
   broaden this afternoon through this evening across northwestern IA,   
   as a mid-level shortwave trough approaches. Increasing DPVA will   
   accompany this feature, in addition to strong isentropic ascent.   
   Most NWP models and forecast soundings suggest omega will peak   
   within the dendritic growth zone through ~22Z over northwestern IA.   
   HREF probabilities of QPF greater than 0.10" per hour, combined with   
   snow to liquid ratios around 15-20 to 1, also support this time   
   frame for the heaviest snowfall.   
      
   ..Barnes.. 12/06/2025   
      
   ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=   
   g!8GLeQPnh-l-nf0gh46V9ss-LrK4Kjf_Hv-S6zhVT2FlS5bEYmdN9rhqIOMgVQDa2phEo0eMHu=   
   p2Uore8U2fC4Y2zlQk$  for graphic product...   
      
   ATTN...WFO...DMX...FSD...OAX...   
      
   LAT...LON   43709693 43699633 43629615 43589590 43509545 43439511   
               43249476 43069448 42829426 42399452 42339494 42149520   
               42109535 42119548 42159557 42189572 42229581 42269592   
               42269606 42339633 42429642 42559654 42699686 42849722   
               42999725 43449725 43709693=20   
      
      
   =3D =3D =3D   
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