929  
ACUS01 KWNS 230514  
SWODY1  
SPC AC 230513  
 
DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK  
1113 PM CST SUN JAN 22 2017  
 
VALID 231200Z - 241200Z  
   
..NO SEVERE THUNDERSTORM AREAS FORECAST
 
 
   
..SUMMARY
 
 
A FEW THUNDERSTORMS ARE POSSIBLE TODAY ACROSS THE MIDDLE ATLANTIC  
REGION, WHILE ISOLATED STORMS MAY ALSO DEVELOP FROM CALIFORNIA INTO  
THE FOUR CORNERS AREA.  
   
..MID ATLANTIC AREA
 
 
UPPER LOW CENTERED OVER WESTERN GA WILL MOVE NORTHEAST TODAY,  
REACHING EASTERN NC THIS AFTERNOON. PRIMARY ZONE OF DEEPER ASCENT  
WILL MOVE FROM NC INTO THE MIDDLE ATLANTIC. THIS AREA WILL RESIDE  
NORTH OF AN OCCLUDED FRONT AND WITHIN DIVERGENT UPPER JET EXIT  
REGION WHERE COLDER TEMPERATURES ALOFT ACCOMPANYING THE UPPER LOW  
CIRCULATION WILL PROMOTE WEAK INSTABILITY AND A FEW THUNDERSTORMS.  
   
..CALIFORNIA THROUGH THE FOUR CORNERS REGION
 
 
A LARGE AREA OF STEEPER LAPSE RATES ASSOCIATED WITH COLD AIR ALOFT  
ACCOMPANYING A SYNOPTIC UPPER TROUGH WILL SPREAD INLAND THROUGH CA  
AND EASTWARD INTO A PORTION OF THE GREAT BASIN. THIS WILL CONTRIBUTE  
TO WEAK INSTABILITY ACROSS THE REGION. SEVERAL POCKETS OF ASCENT  
ACCOMPANYING A SERIES OF VORTICITY MAXIMA ROTATING THROUGH THE UPPER  
LOW CIRCULATION WILL CONTRIBUTE TO THE DEVELOPMENT OF SHOWERS AND A  
FEW THUNDERSTORMS. THUNDERSTORM POTENTIAL APPEARS HIGHER OVER CA AND  
ESPECIALLY NEAR THE COAST WHERE SLIGHTLY GREATER INSTABILITY WILL  
EXIST.  
 
..DIAL.. 01/23/2017  
 

 
 
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