884  
ACUS01 KWNS 051628  
SWODY1  
SPC AC 051627  
 
DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK  
1027 AM CST TUE DEC 05 2017  
 
VALID 051630Z - 061200Z  
 
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS TODAY FROM  
SOUTHERN MS TO CENTRAL AL...  
   
..SUMMARY
 
 
A COUPLE OF STRONG TO LOCALLY SEVERE STORMS COULD OCCUR TODAY FROM  
SOUTHERN MISSISSIPPI TO CENTRAL ALABAMA.  
   
..MS/AL AREA TODAY
 
 
A DEEP SYNOPTIC CYCLONE WILL OCCLUDE TODAY OVER ONTARIO TO THE WEST  
OF JAMES BAY, WHILE AN ASSOCIATED SURFACE COLD FRONT MOVES EASTWARD  
ACROSS THE APPALACHIANS AND SOUTHWARD TOWARD THE GULF COAST.  
SEASONABLE MOISTURE RETURN IS ONGOING AHEAD OF THE FRONT WITH  
BOUNDARY-LAYER DEWPOINTS RANGING FROM THE LOW 70S ALONG THE  
NORTHWEST GULF COAST TO THE LOW-MID 60S AS FAR NORTH AS THE I-20  
CORRIDOR IN MS/AL. 12Z SOUNDINGS SHOWED RATHER POOR LAPSE RATES  
ALOFT, AND THERE WILL BE A GRADUAL TENDENCY FOR THE STRONGER  
LOW-LEVEL FLOW/SHEAR TO DEVELOP EASTWARD THROUGH THIS EVENING, ALONG  
THE NORTHEAST FRINGE OF THE SOMEWHAT MORE UNSTABLE WARM SECTOR.  
WILL MAINTAIN LOW WIND PROBABILITIES FROM THE PRIOR OUTLOOK FOR A  
FEW STRONG STORMS WITHIN THE BAND OF FRONTAL CONVECTION, BUT THE  
SEVERE-STORM THREAT IS ON THE LOWER MARGINS FOR AN OUTLOOK AREA.  
 
..THOMPSON/DARROW.. 12/05/2017  
 

 
 
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