000  
ACUS01 KWNS 181232  
SWODY1  
SPC AC 181230  
 
DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK  
0730 AM CDT SUN OCT 18 2026  
 
VALID 181300Z - 191200Z  
   
..NO SEVERE THUNDERSTORM AREAS FORECAST  
 
   
..SUMMARY  
 
SEVERE THUNDERSTORMS ARE NOT FORECAST THROUGH TONIGHT.  
   
..SYNOPSIS AND DISCUSSION  
 
EVEN WITH EAST-NORTHEASTERLY LOW-LEVEL FLOW PERSISTING TO THE NORTH  
OF A REMNANT COLD FRONT, DIURNAL HEATING OF A MOIST AIRMASS WILL  
SUPPORT SUFFICIENT INSTABILITY FOR ISOLATED TO SCATTERED  
THUNDERSTORMS ACROSS PARTS OF SOUTH FL AND THE KEYS TODAY.  
OCCASIONAL LIGHTNING FLASHES MAY ALSO OCCUR WITH CONVECTION ACROSS  
PARTS OF THE SOUTHWEST AHEAD OF A LOW-AMPLITUDE MID-LEVEL SHORTWAVE  
TROUGH. WEAK SHEAR ACROSS SOUTH FL AND LIMITED MOISTURE/INSTABILITY  
OVER AZ/NM WILL HINDER THE POTENTIAL FOR SEVERE THUNDERSTORMS ACROSS  
BOTH REGIONS. DRY AND/OR STABLE CONDITIONS WILL PRECLUDE  
THUNDERSTORMS FOR THE REMAINDER OF THE CONUS THROUGH THE PERIOD.  
 
..GLEASON/KERR.. 10/18/2026  
 
 
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