713  
ACUS03 KWNS 220552  
SWODY3  
SPC AC 220551  
 
DAY 3 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK  
1151 PM CST TUE NOV 21 2017  
 
VALID 241200Z - 251200Z  
   
..NO SEVERE THUNDERSTORM AREAS FORECAST
 
 
   
..SUMMARY
 
 
THUNDERSTORMS ARE POSSIBLE OVER THE FLORIDA PENINSULA EARLY IN THE  
DAY ON FRIDAY. SEVERE THUNDERSTORMS ARE NOT FORECAST.  
   
..SYNOPSIS
 
 
A POTENT SHORTWAVE TROUGH WILL QUICKLY MOVE EAST ACROSS THE  
MIDWEST/GREAT LAKES WHILE A MID-LEVEL RIDGE AMPLIFIES OVER THE  
WESTERN STATES AHEAD OF AN EAST PACIFIC MID-LEVEL TROUGH.  
THUNDERSTORM ACTIVITY WILL BE ASSOCIATED WITH A WEAKENING MID- TO  
UPPER-LEVEL TROUGH MOVING ACROSS FL AND INTO THE WESTERN ATLANTIC.  
EARLY DAY SHOWER AND THUNDERSTORM ACTIVITY IS POSSIBLE ACROSS THE FL  
PENINSULA AS WEAK LARGE-SCALE ASCENT OVERSPREADS THE REGION. WEAK  
INSTABILITY WILL LIKELY PRECLUDE INTENSE THUNDERSTORM DEVELOPMENT.  
 
ELSEWHERE, TRANQUIL CONDITIONS ARE FORECAST FOR A LARGE PART OF THE  
CONUS.  
 
..SMITH.. 11/22/2017  
 

 
 
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