334
FXUS63 KJKL 152259
AFDJKL
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON KY
659 PM EDT WED OCT 15 2025
KEY MESSAGES
- DRY, SEASONABLY PLEASANT WEATHER CONTINUES ACROSS EASTERN
KENTUCKY THROUGH THE WORK WEEK.
- TEMPERATURES WILL REMAIN NEAR OR JUST ABOVE CLIMATOLOGICAL
AVERAGES FOR THE DURATION OF THE FORECAST PERIOD.
- WHILE CONFIDENCE IN SPECIFIC DETAILS REMAINS LOW, THE NEXT
CHANCE OF SHOWERS/STORMS WILL COME THIS WEEKEND.
- THE PROBABILITY FOR BREEZY TO GUSTY WINDS SUNDAY IS INCREASING
WITH A 10-30% CHANCE OF SEEING GUSTS OF 40 MPH AT THE SURFACE.
UPDATE
ISSUED AT 659 PM EDT WED OCT 15 2025
UPDATED SKY GRIDS TO ACCOUNT FOR THE INCOMING STRATUS DECK FROM
THE NORTH. ALSO REFRESHED HOURLY T/TD GRIDS USING THE LATEST
HOURLY OBSERVATIONS AS THE INITIALIZATION FOR THE FORECAST.
SHORT TERM
(THIS EVENING THROUGH THURSDAY NIGHT)
ISSUED AT 311 PM EDT WED OCT 15 2025
AFTER EXTENSIVE VALLEY FOG THIS MORNING, SUNNY SKIES PREVAIL FOR
MOST LOCATIONS AT MID-AFTERNOON, WITH TEMPERATURES HAVING RISEN
INTO THE LOW TO MID-70S, MAKING FOR ANOTHER DELIGHTFUL MID-OCTOBER
AFTERNOON. A BIT MORE MID-LEVEL CLOUD COVER IS NOTED NORTH OF THE
MOUNTAIN PARKWAY DUE TO A DIFFUSE, REMNANT COLD FRONT SAGGING
SOUTHWARD. OVERALL, SURFACE HIGH PRESSURE—WITH A ~1027 MB CENTER
ALONG THE MINNESOTA-ONTARIO BORDER—REMAINS IN FIRM CONTROL OF OUR
WEATHER, KEEPING A WEAK NORTHERLY FLOW ACROSS THE REGION. ALOFT,
500 HPA RIDGING IS STILL FIRMLY IN PLACE OVER THE HEART OF THE
NATION, WITH A RIDGE AXIS STRETCHING FROM THE TEXAS GULF COAST
NORTHWARD INTO MANITOBA. AT 500 HPA, VORTICITY ENERGY IS
PROPAGATING DOWN THE EASTERN SIDE OF THE RIDGE AXIS WHILE A TROUGH
DIGS OVER NEW ENGLAND AND THE ATLANTIC PROVINCES.
AS THE TROUGH INTENSIFIES NEAR/OVER THE CANADIAN MARITIME PROVINCES,
WEAK HEIGHT FALLS WILL OCCUR OVER THE LOWER OHIO VALLEY THROUGH
TONIGHT, ATTENDING THE PASSAGE OF THE AFOREMENTIONED DRY COLD
FRONT. THROUGH THE REMAINDER OF THE PERIOD, THE 500 HPA RIDGE AXIS
WILL SLOWLY SHIFT TO EAST OF THE MISSISSIPPI RIVER VALLEY AND THE
ASSOCIATED SURFACE HIGH WILL SHIFT EAST INTO QUEBEC, ALLOWING FOR
WINDS TO VEER MORE SOUTHEASTERLY BY THURSDAY NIGHT. DRY AIR
WRAPPING CLOCKWISE AROUND THE SURFACE HIGH WILL SEEP IN BEHIND
THE COLD FRONT TONIGHT AND THURSDAY, WITH THE DRIEST AIR OVERHEAD
THURSDAY NIGHT. DEW POINTS ARE IN THE 50-55°F RANGE THIS
AFTERNOON, BUT BEHIND THE BOUNDARY, THEY SHOULD FALL CLOSER TO
40°F ON THURSDAY, WITH SOME LOCATIONS POSSIBLY REACHING THE UPPER
30S. THIS COULD BE LOW ENOUGH TO ALLOW FOR SOME PATCHY FROST IN
THE COLDEST SHELTERED VALLEYS LATE THURSDAY NIGHT AND EARLY
FRIDAY MORNING.
IN TERMS OF SENSIBLE WEATHER, PATCHY MID-LEVEL CLOUD COVER IS
EXPECTED THROUGH TONIGHT. OTHERWISE, TEMPERATURES ARE EXPECTED TO
DIP INTO THE 40S AREAWIDE BY DAYBREAK THURSDAY MORNING. SOME FOG
IS POSSIBLE, PRIMARILY IN THE MORE SHELTERED RIVER VALLEYS. ON
THURSDAY, IT WILL BE MODESTLY COOLER WITH A DRYING NORTHEAST
BREEZE UNDER MOSTLY SUNNY SKIES. HIGH TEMPERATURES ARE EXPECTED TO
RANGE FROM THE MID-60S TO LOW 70S, COOLEST NORTHEAST TO WARMEST
SOUTHWEST. CHILLIER TEMPERATURES FOLLOW FOR THURSDAY NIGHT WITH
LOWS RANGING IN THE UPPER 30S TO MID 40S, THOUGH A FEW MID 30S ARE
POSSIBLE IN THE COLDEST HOLLOWS WHERE A TOUCH OF PATCHY FROST
CANNOT BE RULED OUT.
LONG TERM
(FRIDAY THROUGH WEDNESDAY)
ISSUED AT 433 PM EDT WED OCT 15 2025
A RIDGE OF HIGH PRESSURE REMAINS OVER KENTUCKY THROUGH FRIDAY. SKIES
WILL START OUT PARTLY CLOUDY, INCREASING TO MOSTLY CLOUDY CONDITIONS
THROUGHOUT THE DAY. TEMPERATURES WILL LIKELY RANGE FROM THE LOW 70S
NORTH AND EAST OF JACKSON, AND MID TO UPPER 70S SOUTH AND WEST OF
THE CITY. WINDS REMAIN FAIRLY LIGHT OUT OF THE EAST. FRIDAY NIGHT,
WARMER AIR CONTINUES TO ADVECT INTO THE AREA, WITH MODEL SOUNDINGS
AND MOISTURE PROFILES SUGGESTING HIGH CLOUDS. TEMPERATURES COOL INTO
THE LOW TO MID 50S, WITH VALLEYS DIPPING INTO THE UPPER 40S. IF
CLEARING BEGINS A BIT EARLIER IN THE NIGHT, VALLEYS COULD DROP A
LITTLE COLDER.
SATURDAY, THE AREA WILL REMAIN UNDER SOUTHWESTERLY FLOW AHEAD OF AN
APPROACHING TROUGH FROM THE WEST. THE PROBABILITY OF SHOWERS
INCREASE THROUGH THE DAY AS A SYSTEM CONTINUES ITS PROGRESSION
THROUGH THE STATE. WHILE SPECIFICS ARE STILL HARD TO PIN DOWN, THIS
SYSTEM IS PROGRESSIVE ENOUGH WHERE SIGNIFICANT HYDROLOGIC ISSUES ARE
NOT ANTICIPATED, EVEN WITH HEAVIER RAINFALL. SHOWERS WILL INCREASE
IN COVERAGE THROUGH THE NIGHT AND CONTINUE THROUGH THE DAY SUNDAY.
THERE REMAINS A LOW CHANCE (<15% CHANCE) OF A THUNDERSTORM WITH THIS
EVENT, SO MENTION OF THEM HAS BEEN LEFT OUT OF MESSAGING AND THE
FORECAST AT THIS TIME. MODEL SOUNDINGS SHOW A LAYER OF DRY AIR AT
MID-LEVELS AND CAPE NOT EXCEEDING 500 J/KG, BOTH OF WHICH ARE NOT
FAVORABLE FOR SUSTAINING THUNDERSTORMS. RAINFALL TOTALS THROUGH
SUNDAY HAVE TRENDED DOWN SOME WITH THE GREATEST AMOUNT ALONG THE I-
75 CORRIDOR UP INTO THE BLUEGRASS AREA SEEING AROUND 1 INCH.
LOCALLY HIGHER AMOUNTS ARE POSSIBLE. WITH WARM AIR CONTINUING TO
ADVECT INTO THE REGION AHEAD OF THE FRONTAL PASSAGE, TEMPERATURES
WILL WARM INTO THE LOW 80S. AT NIGHT, WITH RAINFALL CONTINUING AND
OVERCAST SKIES, TEMPERATURES WILL DIP INTO THE UPPER 50S TO LOW 60S.
SUNDAY, SHOWERS CONTINUE, TAPERING OFF OVERNIGHT, HEADING INTO
MONDAY. TEMPERATURES WILL STRUGGLE TO REACH 70, WITH RAINY AND
BREEZY CONDITIONS. IN FACT, SIGNALS ARE BEGINNING TO INCREASE OF AN
ANOMALOUS WIND EVENT FOR THE AREA. MODELS DEPICT A 110-130 KT JET
STREAK PASSING THROUGH THE AREA SUNDAY MORNING. WITH ONGOING RAIN,
SOME OF THIS WIND ALOFT MAY MIX DOWN TO THE SURFACE. LOOKING AT THE
EFI FOR THE AREA, THE ECMWF IS SHOWING AN WIND SPEED AND GUSTS FOR
THE AREA AROUND THE 85% PERCENTILE. THE 00Z RUN OF THE LREF GRAND
ENSEMBLE, SHOWS A 10-20% CHANCE OF SEEING SUSTAINED WINDS GREATER OR
EQUAL TO 20 MPH, WHILE A 10-30% CHANCE REMAINS FOR SEEING WIND GUSTS
GREATER OR EQUAL TO 40 MPH AT THE SURFACE. WINDS ARE EXPECTED TO
DIMINISH SUNDAY EVENING, AND WITH SKIES ALSO CLEARING THROUGH THE
NIGHT, VALLEYS ARE EXPECTED TO DECOUPLE HEADING INTO THE EVENING.
LOW TEMPERATURES COULD RANGE FROM THE UPPER 30S IN THE VALLEYS
TO THE LOW TO MID 40S ALONG RIDGETOPS. SUNDAY NIGHT, VALLEY FOG WILL
LIKELY DEVELOP AS A RESULT OF THE LIGHT WINDS, CLEARING SKIES, AND
THE MOST RECENT RAINFALL.
MONDAY, A RIDGE OF HIGH PRESSURE BRIEFLY BUILDS BACK INTO THE
REGION, BUT THAT APPEARS TO BE SHORT LIVED AS A BAJA LOW EJECTS INTO
THE CENTRAL PLAINS WHILE A LARGE SCALE TROUGH DESCENDS INTO THE
INTERMOUNTAIN WEST. BY THE TIME TUESDAY AND WEDNESDAY GET AROUND THE
TWO SYSTEMS PHASE INTO A MODEL DEPICTED LOW ACROSS THE UPPER GREAT
LAKES AND COLD FRONT THROUGH THE OHIO AND MISSISSIPPI VALLEYS, TO
THE GULF COAST. AS FOR TEMPERATURES, MONDAY, MID TO UPPER 60S ARE
LIKELY. WITH WAA OCCURRING AT NIGHT, RIDGE TOPS WILL LIKELY STAY
ELEVATED LEADING TO LOWS IN THE LOWER 40S IN THE VALLEYS AND MID TO
UPPER 40S ALONG RIDGE TOPS. VALLEY FOG IS ALSO EXPECTED TO DEVELOP
MONDAY NIGHT. TUESDAY AND WEDNESDAY, MODEL SPREAD IS GREATER WITH
THE UNCERTAINTY OF THE A MID-WEEK SYSTEM, BUT IN GENERAL, UPPER 60S
TO LOW 70S DURING THE DAY WITH LOWS IN THE MID 40S CAN BE
EXPECTED.
AVIATION
(FOR THE 18Z TAFS THROUGH 18Z THURSDAY AFTERNOON)
ISSUED AT 215 PM EDT WED OCT 15 2025
VFR CONDITIONS WERE PREVAILING AT TAF ISSUANCE AND ARE EXPECTED
TO GENERALLY CONTINUE THROUGH THE PERIOD. THE ONLY EXCEPTION IS
TONIGHT IN THE SHELTERED RIVER VALLEYS WHERE LIMITED FOG FORMATION
IS LIKELY. THOUGH CLEAR SKIES WILL BE COMMONPLACE, PATCHY MID-
LEVEL CLOUD COVER WILL ATTEND THE PASSAGE OF A SOUTHWARD SINKING
WEAK, DRY COLD COLD FRONT THIS AFTERNOON THROUGH TONIGHT. WINDS
WILL BE VARIABLE TO NORTHERLY AT LESS THAN 10 KTS THROUGH THE
PERIOD.
JKL WATCHES/WARNINGS/ADVISORIES
NONE.
UPDATE...CMC/GINNICK
SHORT TERM...GEERTSON
LONG TERM...GINNICK
AVIATION...GEERTSON
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