320  
ACUS11 KWNS 050006  
SWOMCD  
SPC MCD 050005  
ILZ000-MOZ000-ARZ000-050200-  
 
MESOSCALE DISCUSSION 1782  
NWS STORM PREDICTION CENTER NORMAN OK  
0605 PM CST MON DEC 04 2017  
 
AREAS AFFECTED...PARTS OF MISSOURI AND ADJACENT WEST-CENTRAL  
ILLINOIS  
 
CONCERNING...SEVERE THUNDERSTORM WATCH 518...  
 
VALID 050005Z - 050200Z  
 
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 518  
CONTINUES.  
 
SUMMARY...SEVERE RISK -- MAINLY IN THE FORM OF GUSTY WINDS --  
CONTINUES LOCALLY WITHIN WW 518.  
 
DISCUSSION...LATEST RADAR LOOP SHOWS A SOMEWHAT BROKEN LINE OF  
STORMS ALONG THE ADVANCING COLD FRONT, WITH GRADUAL DECREASES IN  
INTENSITY NOTED OVER THE PAST HOUR. WITH SURFACE ANALYSES SHOWING A  
GRADUALLY COOLING BOUNDARY LAYER, AND AFTERNOON SPECIAL RAOBS  
SHOWING THAT COOLING TO HAVE A VERY DELETERIOUS EFFECT ON AVAILABLE  
CAPE, EXPECT THE DECREASING TREND IN UPDRAFT INTENSITY TO CONTINUE.  
WHILE A LOCALLY DAMAGING GUST WILL BE POSSIBLE WITH A FEW STRONGER  
ELEMENTS WITHIN THE CONVECTIVE BAND OVER THE NEXT 1-2 HOURS, RISK  
SHOULD GRADUALLY DIMINISH -- AND APPRECIABLE RISK IS NOT EXPECTED TO  
EXTEND EAST OF THE CURRENT WW.  
 
..GOSS.. 12/05/2017  
   
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
 
 
ATTN...WFO...ILX...LSX...LZK...SGF...TSA...  
 
LAT...LON 36509210 36459441 38479236 40199157 40179076 39859040  
38089158 36509210  
 
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