375  
FXUS63 KPAH 152317  
AFDPAH  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE PADUCAH KY  
617 PM CDT WED JUL 15 2026  
   
KEY MESSAGES  
 
- HOT AND HUMID CONDITIONS WILL CONTINUE WITH HEAT INDICES  
PEAKING SATURDAY THROUGH TUESDAY IN THE UPPER 90S TO AROUND  
105 DEGREES.  
 
- CHANCES OF SHOWERS AND THUNDERSTORMS MAINLY DURING THE DAYTIME  
HOURS WILL BE 30% TO 60% ACROSS THE ENTIRE AREA THURSDAY. ON  
FRIDAY AND SATURDAY, HIGHER CHANCES OF 50% TO 80% WILL BE EAST  
OF THE MISSISSIPPI RIVER, TAPERING DOWN TO 20% IN THE OZARK  
FOOTHILLS.  
 
- 20-40% CHANCES OF SHOWERS AND STORMS CAN BE EXPECTED SUNDAY.  
 
 
   
UPDATE  
 
ISSUED AT 610 PM CDT WED JUL 15 2026  
 
UPDATED AVIATION DISCUSSION FOR 00Z TAFS.  
 
 
   
DISCUSSION  
 
ISSUED AT 1219 PM CDT WED JUL 15 2026  
 
WARM AND HUMID CONDITIONS WILL PERSIST THROUGH THE END OF THE  
WEEK AND THROUGH THE WEEKEND INTO EARLY NEXT WEEK. PERSISTENT  
SOUTHERLY FLOW WILL RESULT IN NEAR TO A LITTLE ABOVE NORMAL  
TEMPERATURES AND A LITTLE HIGHER HUMIDITY OVER THE WEEKEND INTO  
TUESDAY, AND THROUGH THIS PERIOD WE WILL SEE AFTERNOON HEAT  
INDICES IN THE UPPER 90S TO AROUND 105 DEGREES. MODELS INDICATE  
THE HEAT AND HUMIDITY WILL IMPROVE WEDNESDAY.  
 
A WEAK SURFACE LOW TO OUR SOUTHWEST WILL HELP KEEP CHANCES OF  
SHOWERS AND STORMS ACROSS SOUTHEAST MISSOURI AND MOST OF WEST  
KENTUCKY AND SOUTHERN ILLINOIS INTO THIS EVENING. MAINLY HEAT OF  
THE DAY CHANCES (30-60%) OF SHOWERS AND THUNDERSTORMS WILL  
RETURN THURSDAY ACROSS OUR ENTIRE REGION AS THE WEAK SURFACE  
LOW MOVES NORTHEAST. ON FRIDAY, AND UPPER LEVEL TROF WILL EXTEND  
THROUGH THE GREAT LAKES REGION INTO THE MIDDLE MISSISSIPPI AND  
LOWER OHIO VALLEYS, INCREASING CHANCES TO 50-80% EAST OF THE  
MISSISSIPPI RIVER, TAPERING DOWN TO 20% IN THE OZARK FOOTHILLS  
OF SOUTHEAST MISSOURI. ISOLATED SHOWERS AND STORMS WILL REMAIN  
POSSIBLE FRIDAY NIGHT, THEN DAYTIME HEATING WILL AGAIN RAMP UP  
THE CHANCES ON SATURDAY TO 50-70% IN SOUTHWEST INDIANA AND WEST  
KENTUCKY, WITH 20-40% CHANCES IN SOUTHERN ILLINOIS AND SOUTHEAST  
MISSOURI. DUE TO THE SCATTERED NATURE OF CONVECTION, AVERAGE  
PRECIPITATION TOTALS WILL BE LESS THAN HALF AN INCH, BUT  
INDIVIDUAL STORMS MAY PRODUCE BRIEF HEAVY RAIN, RESULTING IN  
LOCALIZED HIGHER AMOUNTS. THE UPPER TROF WILL MOVE FARTHER EAST  
BY LATE IN THE WEEKEND, SO SUNDAY AFTERNOON CHANCES WILL MAX OUT  
IN THE 20-40% RANGE. BEYOND SUNDAY, MINIMAL CHANCES ARE  
EXPECTED.  
 
 
   
AVIATION /00Z TAFS THROUGH 00Z THURSDAY/  
 
ISSUED AT 610 PM CDT WED JUL 15 2026  
 
ISOLATED CONVECTION WILL LINGER THROUGH SOME OF THE EVENING  
BEFORE ENDING. ADDITIONAL SCATTERED SHOWERS AND STORMS ARE  
LIKELY TO DEVELOP BY MIDDAY THROUGH THE AFTERNOON ON THURSDAY,  
AND THIS TIME COULD IMPACT THE NORTHEASTERN TERMINALS AS WELL.  
BRIEF MVFR CONDITIONS ARE POSSIBLE WITH ANY CONVECTION. ANOTHER  
CONCERN THIS TAF CYCLE WILL BE FOG DEVELOPMENT OVERNIGHT,  
PARTICULARLY ACROSS SOUTHEAST MISSOURI AND PARTS OF SOUTHERN  
ILLINOIS THAT RECEIVED THE HEAVIEST RAIN TODAY.  
 
 
   
PAH WATCHES/WARNINGS/ADVISORIES  
 
IL...NONE.  
MO...NONE.  
IN...NONE.  
KY...NONE.  
 
 
 
 
 
UPDATE...SP  
DISCUSSION...RST  
AVIATION...SP  
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