045  
ACUS01 KWNS 200549  
SWODY1  
SPC AC 200548  
 
DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK  
1248 AM CDT TUE OCT 20 2026  
 
VALID 201200Z - 211200Z  
   
..NO SEVERE THUNDERSTORM AREAS FORECAST
 
 
   
..SUMMARY
 
 
NO SEVERE THUNDERSTORMS ARE FORECAST ACROSS THE U.S. TODAY AND  
TONIGHT.  
   
..DISCUSSION
 
 
A MID-LEVEL ANTICYCLONIC FLOW PATTERN WILL BE IN PLACE ACROSS THE  
SOUTH-CENTRAL U.S. TODAY, AS DIVERGENT FLOW ALOFT REMAINS OVER THE  
SOUTHWEST. AT THE SURFACE, A LARGE AREA OF HIGH PRESSURE WILL BE  
ENTRENCHED OVER THE EASTERN HALF OF THE NATION. AN AXIS OF LOW-LEVEL  
MOISTURE WILL BE IN PLACE OVER THE DESERT SOUTHWEST, WHERE SCATTERED  
THUNDERSTORMS WILL BE POSSIBLE TODAY AS INSTABILITY INCREASES. THE  
CHANCE FOR STORMS IN THE DESERT SOUTHWEST WILL CONTINUE INTO THE  
EVENING AND OVERNIGHT PERIOD. NO SEVERE THREAT IS EXPECTED ACROSS  
THE CONTINENTAL U.S. THROUGH DAYBREAK WEDNESDAY.  
 
..BROYLES/LEITMAN.. 10/20/2026  
 

 
 
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