084  
FXUS63 KLMK 152339  
AFDLMK  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE LOUISVILLE KY  
739 PM EDT MON SEP 15 2025  
   
..UPDATED AVIATION DISCUSSION  
 
   
KEY MESSAGES  
 
* MOSTLY DRY WEATHER IS EXPECTED OVER THE NEXT WEEK, WITH ONGOING  
ABNORMALLY DRY AND MODERATE DROUGHT CONDITIONS LIKELY TO PERSIST.  
 
* TEMPERATURES WILL BE UNSEASONABLY WARM WITH HIGHS IN THE UPPER  
80S TO THE LOWER 90S.  
 
* RAIN CHANCES RETURN FOR THE WEEKEND, BUT RAINFALL AMOUNTS ARE  
EXPECTED TO BE LIGHT.  
 
 
   
SHORT TERM /THROUGH TUESDAY/  
 
ISSUED AT 309 PM EDT MON SEP 15 2025  
 
IN THE UPPER LEVELS, AN OMEGA BLOCK REMAINS IN PLACE WITH RIDGING  
CENTERED OVER THE MIDWEST AND GREAT LAKES. THE RIDGE ALOFT IS BEING  
SQUEEZED BY AN UPPER LEVEL TROUGH OVER ND/MN AND A CLOSED LOW OVER  
THE CAROLINAS. A LONG SFC BOUNDARY EXTENDS SOUTHEAST OVER PORTIONS  
OF THE MS VALLEY AND LOWER OH VALLEY. LOW-LEVEL CONVERGENCE, IF ANY,  
IS WEAK ACROSS A MODEST MOISTURE/INSTABILITY GRADIENT IN CENTRAL KY  
AND SOUTHERN IN.  
 
A HEALTHY SCT CUMULUS FIELD HAS DEVELOPED THIS AFTERNOON, WITH SFC  
TEMPS PUSHING INTO THE UPPER 80S AND LOWER 90S. VERTICAL DEVELOPMENT  
HAS BEEN LIMITED BY DRIER, SUBSIDENT AIR ALOFT. THE MID/UPPER LEVEL  
RIDGE CENTERED JUST OFF TO THE NORTH WILL CONTINUE TO EXERT ITS  
INFLUENCE THROUGH THE SHORT TERM PERIOD. AND WE'RE JUST NOT SEEING  
SIGNIFICANT LOW-LEVEL MOISTURE TRANSPORT INTO THE REGION, EITHER,  
WITH THE MAIN MOISTURE PLUME WELL OFF TO OUR WEST THROUGH PORTIONS  
OF MO, IA, AND WI. MAINLY DRY CONDITIONS WILL CONTINUE, THOUGH A FEW  
SMALL, ISOLATED SHOWERS WILL BE POSSIBLE THIS AFTERNOON AND EARLY  
EVENING. LIKEWISE, A FEW ISOLATED SHOWERS WILL ALSO BE POSSIBLE  
TUESDAY AFTERNOON, MAINLY ACROSS SOUTH-CENTRAL KENTUCKY WHERE WE'LL  
HAVE SLIGHTLY MORE MOISTURE TO WORK WITH. BUT WILL KEEP POPS BELOW  
15% AT THIS TIME, SO CONTINUING WITH A DRY FORECAST.  
 
TONIGHT, SKIES WILL BE PARTLY CLOUDY WITH JUST SOME THIN CIRRUS  
STREAMING WEST FROM THE UPPER LOW OVER THE CAROLINAS. IT'LL BE MILD,  
WITH LOWS MOSTLY IN THE 60-65 DEGREE RANGE. WE'LL CONTINUE TO SEE  
SCT-BKN CIRRUS STREAM EAST TO WEST ON TUESDAY, WHICH MAY HAVE A  
SMALL IMPACT ON AFTERNOON HIGHS. BUT EXPECT ANOTHER WARM AFTERNOON,  
WITH HIGHS IN THE 86-91 DEGREE RANGE.  
 
 
   
LONG TERM /TUESDAY NIGHT THROUGH MONDAY/  
 
ISSUED AT 309 PM EDT MON SEP 15 2025  
 
===== TUESDAY NIGHT THROUGH THURSDAY NIGHT =====  
 
MID AND UPPER LEVEL RIDGING WILL REMAIN IN PLACE OVER THE MIDWEST  
AND LOWER OH VALLEY THROUGH THIS PERIOD WHILE GRADUALLY DEAMPLIFYING  
WITH TIME. LIGHT NE FLOW CONTINUES THROUGH A PORTION OF THE LOWER TO  
MID-LEVELS, AND THE AIRMASS DRIES OUT A BIT WITH PW DIPPING BELOW  
1.0 INCH. EXPECT DRY CONDITIONS TO CONTINUE, WITH MORNING LOWS  
RANGING FROM THE MID 50S TO LOWER 60S. HIGHS ON WEDNESDAY WILL REACH  
THE MID 80S TO AROUND 90, WITH UPPER 80S AND LOWER 90S ON THURSDAY.  
 
===== FRIDAY THROUGH SUNDAY =====  
 
THE MID/UPPER LEVEL RIDGE AXIS MOVES OVERHEAD ON FRIDAY AS AN UPPER  
LEVEL TROUGH STARTS TO MOVE FROM THE CENTRAL PLAINS ACROSS THE  
MIDWEST. THIS TROUGH UPSTREAM WILL EVENTUALLY BRING US SOME LIGHT  
RAIN CHANCES OVER THE WEEKEND, BUT WE'LL STAY DRY THROUGH AT LEAST  
FRIDAY. LOOK FOR ANOTHER HOT DAY, WITH HIGHS MOSTLY IN THE LOWER  
90S.  
 
WE SHOULD SEE A PAIR OF UPPER LEVEL SHORTWAVE TROUGHS SLIDE EAST-  
NORTHEAST ACROSS PORTIONS OF THE MIDWEST, GREAT LAKES, AND CANADA  
THIS WEEKEND. IT DOES APPEAR THE BETTER FORCING AND MOISTURE WILL  
STAY TO OUR NORTH, BUT WE'LL SEE AT LEAST MODEST MOISTURE ADVECTION  
VIA S/SW FLOW. ISOLATED TO SCATTERED SHOWERS AND STORMS WILL BE  
POSSIBLE BOTH SATURDAY AND SUNDAY, THOUGH CONFIDENCE IN DETAILED  
TIMING/AMOUNTS IS LOW AT THIS TIME RANGE.  
 
 
   
AVIATION /00Z TAFS THROUGH 06Z WEDNESDAY/  
 
ISSUED AT 738 PM EDT MON SEP 15 2025  
 
AN ALREADY DIMINISHING HIGH BASED CUMULUS FIELD WILL GIVE WAY TO  
SCATTERED UPPER CLOUDS OVERNIGHT. THESE HIGH CLOUDS WILL CONTINUE  
INTO TOMORROW, ALONG WITH SOME HIGH BASED CUMULUS ONCE AGAIN. WINDS  
WILL BE CALM OR LIGHT AND VARIABLE OVERNIGHT, AND ARE EXPECTED TO BE  
LIGHT OUT OF THE NE ON TUESDAY. VFR PREVAILS THE ENTIRE FORECAST  
CYCLE.  
 
 
   
LMK WATCHES/WARNINGS/ADVISORIES  
 
KY...AIR QUALITY ALERT UNTIL MIDNIGHT EDT TUESDAY NIGHT FOR  
KYZ029>031.  
IN...AIR QUALITY ALERT FROM MIDNIGHT EDT /11 PM CDT/ TONIGHT TO  
MIDNIGHT EDT /11 PM CDT/ TUESDAY NIGHT FOR INZ076-083-084-  
089.  
AIR QUALITY ALERT UNTIL MIDNIGHT EDT TUESDAY NIGHT FOR  
INZ077>079-090>092.  
 
 
 
 
 
SHORT TERM...EBW  
LONG TERM...EBW  
AVIATION...BJS  
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