TZUTC: 0000   
   MSGID: 168073.weather@1:2320/105 2dba115c   
   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 290932   
   SWOMCD   
   SPC MCD 290932=20   
   MIZ000-291530-   
      
   Mesoscale Discussion 2286   
   NWS Storm Prediction Center Norman OK   
   0332 AM CST Mon Dec 29 2025   
      
   Areas affected...Parts of Upper Michigan and far northern Lower   
   Michigan   
      
   Concerning...Heavy snow=20   
      
   Valid 290932Z - 291530Z   
      
   SUMMARY...Banded heavy snow with rates of 1-2 inches per hour and   
   periods of blizzard conditions are expected through the morning   
   hours.   
      
   DISCUSSION...To the west/northwest of a very deep low pressure   
   system (983 mb surface low over Lake Huron), substantial deep-layer   
   lift is overspreading a cold, deeply saturated profile over Upper MI   
   and vicinity. The combination of this lift through a deep/saturated   
   DGZ and isothermal layer below will promote efficient crystal growth   
   and aggregation. As as result, widespread and prolonged heavy   
   snowfall rates of 1-1.5 inches per hour are expected, with even   
   higher rates to around 2 inches per hour over the higher terrain and   
   beneath the core of more organized banding. In addition to these   
   substantial and prolonged rates, a very tight pressure gradient   
   peripheral to the deep surface low and strong low-level jet   
   (50-60-kt flow in the lowest 1 km AGL per MQT VWP) will promote   
   40-50 mph gusts and intermittent blizzard conditions in conjunction   
   with the heavy snowfall rates.   
      
   ..Weinman.. 12/29/2025   
      
   ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=   
   g!5AHioYy2AuBNDyWVpzckpxvi6ca9-1DJrIUsRCuHm0XyNLZ2GuL4Lp_VGRd1RXok--7jlKZft=   
   e40yyY1twZgGQ2tNfU$  for graphic product...   
      
   ATTN...WFO...APX...MQT...   
      
   LAT...LON   45458526 45558610 45788701 46168815 46508849 46718842   
               46828799 46578760 46408716 46428653 46618622 46738507   
               46538424 46158371 45818366 45538398 45398451 45458526=20   
      
      
   =3D =3D =3D   
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