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   MSGID: 167278.weather@1:2320/105 2d975244   
   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   
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   ACUS11 KWNS 030113   
   SWOMCD   
   SPC MCD 030112=20   
   MEZ000-NHZ000-030715-   
      
   Mesoscale Discussion 2249   
   NWS Storm Prediction Center Norman OK   
   0712 PM CST Tue Dec 02 2025   
      
   Areas affected...coastal northern New England   
      
   Concerning...Heavy snow=20   
      
   Valid 030112Z - 030715Z   
      
   SUMMARY...Moderate to heavy snow rates on the order of 1/2 to 1+   
   inches per hour are possible across southern Maine this evening,   
   with heaviest rates most probable near Down East coastal areas   
   closer to and after Midnight EST, as strengthening and gusty winds   
   contribute to reduced visibilities and blowing/drifting.   
      
   DISCUSSION...A deepening surface cyclone is forecast to continue an   
   east-northeastward migration, generally south through east of the   
   Cape Cod vicinity through mid to late evening.  This will be   
   accompanied by a zone of strengthening lower/mid-tropospheric   
   frontogenetic forcing to its north through northeast.  At   
   mid-levels, the Rapid Refresh indicates that this will shift across   
   southern Maine through southern New Brunswick, where forecast   
   soundings indicate that  strengthening lift in (roughly) the 600-500   
   mb layer may coincide with temperatures most conducive to large   
   dendritic ice crystal growth (around -15 C).   
      
   There is notable spread within and among the various model output   
   concerning these details, and potentially varying rates of cyclone   
   and upward vertical motion intensification.  However, in the   
   presence of sub-freezing thermodynamic profiles, guidance generally   
   indicates snow rates on the order of 1/2 to 1 inch per hour are   
   possible this evening across much of southern Maine.  Heaviest rates   
   appear most probable near immediate coastal areas of Maine,   
   particularly across Down East coastal Maine closer to and after   
   05-06Z, when strengthening and gusty east-northeasterly surface   
   winds may contribute to considerable blowing/drifting and reduced   
   visibilities.   
      
   ..Kerr.. 12/03/2025   
      
   ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=   
   g!63l5TsRTVKHsciZtEOS1CusHX6FbJvW3N87r-cm2eaTmCmslOHiwJhtZEHWE5wtAt6vsNEhgG=   
   9t18_Dc17nUEMUxiHc$  for graphic product...   
      
   ATTN...WFO...CAR...GYX...   
      
   LAT...LON   43277133 44757076 45456714 44046610 43626951 43127081   
               43277133=20   
      
      
   =3D =3D =3D   
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