170
FXUS63 KLMK 121953
AFDLMK
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOUISVILLE KY
353 PM EDT TUE AUG 12 2025
KEY MESSAGES
* WARM AND HUMID, WITH SCATTERED SHOWERS AND THUNDERSTORMS THROUGH
THURSDAY. THE RISK FOR SEVERE WEATHER IS LOW, THOUGH SOME STORMS
COULD PRODUCE LOCALLY HEAVY DOWNPOURS AND FREQUENT LIGHTNING.
* HOT AND HUMID THIS WEEKEND WITH HIGHS IN THE LOW TO MID 90S.
TRIPLE DIGIT HEAT INDEX VALUES POSSIBLE AT TIMES.
SHORT TERM /THROUGH WEDNESDAY/
ISSUED AT 352 PM EDT TUE AUG 12 2025
TONIGHT, SHOWERS AND THUNDERSTORMS ARE EXPECTED TO BEGIN TO WEAKEN
AND FADE AS DIURNAL WARMING IS LOST, BUT THIS COULD BE SHORT-LIVED
AS AN UPPER TROUGH MOVES EAST ACROSS THE GREAT LAKES AS IT PULLS AN
EMBEDDED COLD FRONT TOWARDS THE CWA. AS POOLED MOISTURE AHEAD OF THE
FRONT APPROACHES THE CWA, ADDITIONAL SHOWERS AND THUNDERSTORMS ARE
EXPECTED LATER IN THE NIGHT. NOTHING SEVERE IS EXPECTED GIVEN THAT
WE CONTINUE TO HAVE LOW SHEAR, BUT ADDED POCKETS OF FOG COULD RESULT
FROM THE ADDED MOISTURE ON THE GROUND. MANY ALONG AND EAST OF
INTERSTATE 65 CAN EXPECT SOME LOW-LEVEL STRATUS. LOWS IN THE UPPER
60S TO LOW 70S ARE EXPECTED.
TOMORROW, DEEP LAYER MOISTURE REMAINS IN PLACE AND WITH THE COLD
FRONT JUST OFF TO OUR NORTHWEST, SCATTERED SHOWERS AND THUNDERSTORMS
WILL INCREASE WITH AFTERNOON AND EVENING HEATING. HIGH PRECIPITABLE
WATER VALUES COULD LEAD TO HEAVY RAINFALL, BUT MILD LAPSE RATES AND
NO SHEAR SHOULD KEEP THINGS SUB-SEVERE. THE GREATEST THREAT WOULD
CONTINUE TO BE FROM PONDING WATER ON ROADWAYS AND LIGHTNING. HIGHS
WILL REACH INTO THE UPPER 80S TO LOW 90S WITH DEW POINTS RANGING
FROM THE LOW TO UPPER 70S.
LONG TERM /WEDNESDAY NIGHT THROUGH TUESDAY/
ISSUED AT 352 PM EDT TUE AUG 12 2025
THURSDAY, THE SLOW MOVING COLD FRONT IS EXPECTED TO DROP FARTHER
SOUTH ACROSS THE CWA AS IT WEAKENS. THIS IS EXPECTED TO ONCE AGAIN
PRODUCE ANOTHER AFTERNOON AND EVENING WITH ADDITIONAL SHOWERS AND
THUNDERSTORM. THE FOCUS FOR MOST OF THE ACTIVITY WILL BE FARTHER
SOUTH AND EAST OVER SOUTHERN KENTUCKY AND FARTHER EAST ACROSS PARTS
OF THE LAKE CUMBERLAND AND BLUEGRASS REGIONS. COVERAGE IS EXPECTED
TO BE LESS THAN TODAY OR TOMORROW (WEDNESDAY).
BY FRIDAY, THE DEEP LAYER MOISTURE GETS PUSH SOUTH OF THE AREA AS
UPPER RIDGING BEGINS TO PUSH EAST FROM THE OZARKS EAST INTO THE
LOWER OHIO VALLEY. THIS WILL PROVIDE DRIER CONDITIONS AND MORE
SUNSHINE THROUGH THE BEGINNING OF NEXT WEEK. TEMPERATURES, MOSTLY IN
THE 90S ON FRIDAY WILL CLIMB INTO THE MID 90S FOR THE WEEKEND, AND
WITH DEW POINTS THAT COULD REACH INTO THE MID 70S, HEAT INDICES
COULD REACH TO JUST BELOW ADVISORY LEVELS IN THE 100-103 RANGE.
AVIATION /18Z TAFS THROUGH 00Z THURSDAY/
ISSUED AT 152 PM EDT TUE AUG 12 2025
FOR THE REST OF THE DAY, CUMULUS WILL CONTINUE TO DEVELOP INTO
SCATTERED SHOWERS AND THUNDERSTORMS THAT WILL WORK NORTHEAST ACROSS
SOUTHERN INDIANA AND CENTRAL KENTUCKY. TONIGHT, SHOWER ACTIVITY
SHOULDN'T BE AS WIDESPREAD, BUT MAY STILL HAVE TO BE ADDED TO FUTURE
TAFS. THE BIGGER ISSUE WILL COME WITH FALLING CEILINGS OUT OF THE
EAST. MVFR CEILINGS ARE EXPECTED AT SDF, LEX, AND RGA. VISIBILITIES
COULD DROP SLIGHTLY, BUT DROPS CURRENTLY LOOK LIMITED. IMPROVEMENTS
WILL COME LATER IN THE MORNING.
LMK WATCHES/WARNINGS/ADVISORIES
KY...NONE.
IN...NONE.
SHORT TERM...KDW
LONG TERM...KDW
AVIATION...KDW
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