408  
FXUS63 KJKL 172000  
AFDJKL  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE JACKSON KY  
400 PM EDT WED SEP 17 2025  
   
KEY MESSAGES
 
 
- MAINLY DRY WEATHER LOOKS TO PERSIST THROUGH THE WEEKEND.  
 
- TEMPERATURES WILL CONTINUE TO BE ABOVE NORMAL THROUGH THIS  
WEEKEND AND INTO NEXT WEEK.  
 

 
   
SHORT TERM
 
(THIS EVENING THROUGH THURSDAY NIGHT)  
ISSUED AT 241 PM EDT WED SEP 17 2025  
 
A WEAKENING UPPER LOW CURRENTLY CENTERED OVER THE CHESAPEAKE BAY  
REGION WILL BECOME ABSORBED INTO THE MID-LATITUDE WESTERLIES OVER  
THE NEXT 24 HOURS THROUGH THURSDAY AFTERNOON. MEANWHILE, WEAK UPPER  
RIDGING GRADUALLY MOVES OVERHEAD FROM THE WEST THROUGH THE REMAINDER  
OF THE SHORT-TERM PERIOD THROUGH THURSDAY NIGHT.  
 
WARM AND DRY CONDITIONS WILL CONTINUE, WITH RELATIVELY LITTLE IN THE  
WAY OF CLOUD COVER. MID AND HIGH CLOUDS WILL DIMINISH THIS EVENING,  
WITH VALLEY FOG DEVELOPING TONIGHT. FOG LIFTS AND BURNS OFF THURSDAY  
MORNING, WITH A FEW SHALLOW CUMULUS IN THE AFTERNOON, WITH RIVER  
VALLEY FOG DEVELOPING AGAIN THURSDAY NIGHT.  
 
WITH RISING HEIGHTS AND CLEARING SKIES, HIGHS WILL JUMP A FEW  
DEGREES HIGHER THURSDAY COMPARED TO THIS AFTERNOON, WITH  
TEMPERATURES WELL INTO THE 80S, WARMEST IN THE BLUEGRASS REGION.  
LOWS WILL REMAIN GENERALLY THE SAME OR TREND SLIGHTLY WARMER  
THURSDAY NIGHT COMPARED TO TONIGHT, WITH LOWS BOTH NIGHTS IN THE MID  
50S TO LOWER 60S.  
   
LONG TERM
 
(FRIDAY THROUGH WEDNESDAY)  
ISSUED AT 350 PM EDT WED SEP 17 2025  
 
HIGHLY AMPLIFIED FLOW ACROSS NORTH AMERICA CONTINUES INTO NEXT  
WEEK. AN ENERGETIC SYSTEM ARRIVES ON THE WEST COAST ON SUNDAY AND  
CONTINUES PROGRESSING EAST THROUGH THE WEEK, ABSORBING A CUTOFF  
LOW IN THE CENTRAL US INTO A LARGER TROUGHING PATTERN BY TUESDAY,  
ACCORDING TO THIS MORNING'S MODEL SUITES. WHEN THIS TROUGH  
EVENTUALLY GETS KICKED AND BEGINS MOVING, IT WOULD BE THE SOURCE  
OF THE NEXT SET OF WIDESPREAD PRECIP CHANCES.  
 
THE BIGGEST QUESTION OF THE FORECAST IS WHETHER TO TRUST GUIDANCE  
THAT THE PATTERN WILL ACTUALLY BE IN MOTION BY TUESDAY. OVERALL  
ENSEMBLE GUIDANCE IS IN VERY GOOD AGREEMENT, BOTH WITH OTHER  
ENSEMBLES AS WELL AS IN RUN-TO-RUN CONSISTENCY, ABOUT THE  
PROGRESSION (OR LACK THEREOF) OF THE UPSTREAM PATTERN THROUGH  
SUNDAY, THOUGH RUN-TO-RUN INDICATES A CONTINUED SLOWING BIAS.  
 
SUNDAY, OR THE DAY 5 AND BEYOND TIMEFRAME, IS WHEN UNCERTAINTY  
BECOMES READILY APPARENT REGARDING HOW/WHETHER THE UPSTREAM CUTOFF  
LOW WILL ACTUALLY BEGIN MOVING. FOR THE LAST 4-5 DAYS, MODELS  
HAVE STRUGGLED TO CAPTURE THE EVOLUTION OF THE ONGOING  
PATTERN AND THIS SHORTWAVE BEYOND FH96, PUSHING POP INCREASES IN  
EASTERN KENTUCKY BACK BY ANOTHER DAY FOR EACH DAY THAT PASSES,  
CONSISTENTLY KEEPING "RAIN CHANCES" AT THE PERIPHERY OF THE  
EXTENDED FORECAST. THIS TREND WILL CONTINUE WITH EACH SUBSEQUENT  
FORECAST UNTIL GLOBAL MODELS REGAIN SKILL WITH THE UPSTREAM WAVES  
IMPACTING THE WEST COAST. THUS, NBM POPS HAVE NOT BEEN CHANGED,  
WITH CHANCES <20% THROUGH MONDAY AND ONLY INCREASING TO 20-30%  
TUESDAY AND WEDNESDAY. THAT BEING SAID, A LOCALIZED AFTERNOON  
POP-UP SHOWER ISN'T COMPLETELY OUT OF THE QUESTION THIS WEEKEND.  
 
HIGH AGREEABILITY BETWEEN MODELS IN EVOLUTION THROUGH SUNDAY LENDS  
ITSELF TO HIGH CONFIDENCE IN TEMPERATURES IN THE UPPER 80S TO LOW  
90S ON FRIDAY AND SATURDAY. TEMPERATURES COOL A FEW DEGREES SUNDAY  
BUT REMAIN IN THE 80S, WHICH MAINTAINS THROUGH THE REMAINDER OF THE  
FORECAST PERIOD. OVERNIGHT LOWS GENERALLY IN THE UPPER 50S TO LOW  
60S THROUGH THE EXTENDED, WITH THE EXCEPTION OF VALLEYS, WHICH WILL  
BE SEVERAL DEGREES COOLER THAN SURROUNDING AREAS AND MAY SUPPORT  
PATCHY FOG.  
 

 
   
AVIATION
 
(FOR THE 18Z TAFS THROUGH 18Z THURSDAY AFTERNOON)  
ISSUED AT 113 PM EDT WED SEP 17 2025  
 
VFR CONDITIONS ARE EXPECTED UNDER DECREASING MID- AND HIGH-LEVEL  
CLOUD COVER. FOG IS LIKELY TO DEVELOP ONCE AGAIN IN THE RIVER  
VALLEYS AFTER 03Z THIS EVENING, AND MAY IMPACT KLOZ AND KSME WITH  
SUB-VFR CONDITIONS, BUT CONFIDENCE IS TOO LOW TO INCLUDE IN THE  
TAF AT THIS TIME. MEANWHILE, WINDS WILL BE LIGHT AND VARIABLE  
THROUGH THE PERIOD.  
 

 
   
JKL WATCHES/WARNINGS/ADVISORIES
 
 
NONE.  
 

 
 

 
 
SHORT TERM...CMC  
LONG TERM...CAMDEN  
AVIATION...CMC  
 
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