MESOSCALE DISCUSSION 2254
   NWS STORM PREDICTION CENTER NORMAN OK
   1150 PM CST THU NOV 30 2006
  
   AREAS AFFECTED...EXTREME SERN KS...MUCH OF NRN/CNTRL
   MO...NRN/W-CNTRL IL...EXTREME SERN IA
  
   CONCERNING...HEAVY SNOW
  
   VALID 010550Z - 011015Z
  
   MODERATE TO HEAVY SNOW WITH LOCAL RATES UP TO 3 IN/HR WILL SPREAD
   NEWD FROM SERN KS/NERN OK/WRN MO ACROSS NERN MO INTO W-CNTRL AND NRN
   IL BY 12Z. AS THE SURFACE LOW ACROSS FAR WRN KY LIFTS NORTH AND
   DEEPENS...GRADIENT WINDS WILL INCREASE...AIDING IN BLOWING/DRIFTING
   SNOW AS WELL.
  
   POWERFUL UPPER LOW CENTERED AT 500 MB NEAR FAYETTEVILLE AR WILL
   TRACK NEWD TO NEAR SPRINGFIELD IL BY 12Z. DEFORMATION BAND OF
   MODERATE TO HEAVY SNOW WILL CONTINUE TO THE NW OF MID-LEVEL DRY
   SLOT...PARALLEL TO TRACK OF UPPER LOW. 00Z/RUC AND 03Z/NAM FORECAST
   SOUNDINGS INDICATE LARGE DENDRITIC GROWTH ZONES /IN EXCESS OF 100
   MB/ WILL OCCUR ACROSS MUCH OF CNTRL MO FROM AROUND 50 N OF SGF TO
   COU TO UIN THROUGH 10Z. ISOLATED CG STRIKES HAVE OCCURRED WITHIN
   THIS ZONE...LIKELY SUPPORTING VERY HEAVY BURSTS OF SNOWFALL AT TIMES
   FROM 2 TO 3 IN/HR.
  
   FURTHER NE...VERY STRONG UPPER-LEVEL DIVERGENCE/DIFFLUENCE WILL
   OCCUR TO THE N/NW OF A 100+ KT 500 MB JET CURLING E/SE OF UPPER LOW.
   A MIX OF SLEET/FREEZING RAIN/SNOW ACROSS MUCH OF WRN/NRN IL WILL
   GRADUALLY TURN TO ALL SNOW FROM W TO E AS LOW-LEVEL TEMPS SLOWLY
   COOL WITH TIME. SNOWFALL RATES OF 1 TO 2 IN/HR WILL BE LIKELY IN THE
   09-12Z TIME FRAME FROM THE NRN STL METRO/UIN AREA NEWD TOWARDS PIA
   AND THE WRN CHICAGO METRO AREA.
  
   ..GRAMS.. 12/01/2006
  
  
   ATTN...WFO...LOT...ILX...MKX...LSX...DVN...SGF...EAX...TSA...TOP...ICT...
  
   38619053 37489215 36869405 36849542 37989516 39539357
   40909171 41839019 42208951 42558832 41648761 40868811
   40068899