FXUS63 KLMK 262016

AFDLMK



Area Forecast Discussion

National Weather Service Louisville KY

416 PM EDT Thu Jun 26 2025



.KEY MESSAGES...



* Heat Advisory extended through Friday. 



* Isolated to scattered afternoon/evening shower and thunderstorms 

  chances remain.



* Cold front brings additional rain chances and lower humidity by 

  Wednesday.



&&



.SHORT TERM /THROUGH FRIDAY/...

Issued at 416 PM EDT Thu Jun 26 2025



In most areas across southern Indiana and central Kentucky 

temperatures are on either side of 90, but a few areas have fallen 

into the 70s and low 80s from rain showers currently working over 

the area. This has produced a series of outflow boundaries that are 

continue to cut across the area, kicking up new showers and 

thunderstorms. The convection has had limited vertical growth (due 

to mid-level subsidence) and tends to be relatively short lived, 

producing winds up to around 30-35 mph. Scattered showers and 

thunderstorms will continue to be possible through the rest of the 

afternoon and evening hours. Severe weather isn't expected.



Tonight, upper high pressure will continue expanding from the 

Southeast west towards the Four Corners region, pushing the upper 

trough, over the western CONUS, northward until upper flow is zonal 

through the Great Lakes region. At the surface high pressure over 

the Southeast will keep funneling moistures north up the Mississippi 

and Ohio River Valley. Precipitable water values over the CWA will 

continue to recover and increase to 1.6 to 2 inches by Friday 

morning. Under mostly clear skies, lows will fall into the low to 

mid 70s. 



Tomorrow, south to southwest winds will continue to usher in moist 

air. Dew points are expected to climb into the low to mid 70s in 

most places. A few places could reach into the upper 70s, and with 

temperatures in the low to mid 90s, heat indices will climb back 

into the mid 90s to near 100. These values are trending lower than 

today's heat indices. The Heat Advisory was extended again through 

Friday for what will probably be the last time. A lot of moisture 

remains in the area, so afternoon/evening showers and thunderstorms 

will once again be possible. Don't believe coverage will be as 

widespread as today.



&&



.LONG TERM /FRIDAY NIGHT THROUGH THURSDAY/...

Issued at 416 PM EDT Thu Jun 26 2025



Saturday, surface high pressure over the Southeast will continue to 

sent moisture up the Mississippi and Ohio Valleys ahead of a cold 

front riding east along the zonal flow, north of the CWA. This is 

expected to produce isolated to scattered shower and thunderstorm 

throughout the Lower Ohio Valley.  



Saturday to Monday, expect slightly cooler temperatures and ongoing 

isolated to scattered showers and storms. Temperatures are expected 

to fall into the upper 80s to low 90s by Saturday and Sunday.  



Monday night into Tuesday, an upper ridge is expected to amplify 

over the Rockies as a trough deepens over the East Coast. Northwest 

flow over the Lower Ohio Valley will push a cold front through the 

CWA, bringing a line of showers and thunderstorms. Given as the 

precipitation should move through during the overnight and morning 

hours, severe weather chances remain low. Highs fall into the mid 

80s to near 90 before falling dew points arrive on Wednesday, 

falling into the mid 60s. Highs remain in the mid 80s to low 90s 

Wednesday and Thursday.



&&



.AVIATION /18Z TAFS THROUGH 00Z SATURDAY/...

Issued at 209 PM EDT Thu Jun 26 2025



Mostly VFR conditions will continue as upper ridging and surface 

high pressure remain over the Lower Ohio Valley. The exception could 

be if one of the isolated to scattered storms directly hit an 

airfield this afternoon/evening. Coverage remains limited, but we 

continue to see these storms develop over urban heat and propagate 

along outflow boundaries. Winds are generally out of the southwest 

and are expected to back towards the south tonight.



&&



.LMK WATCHES/WARNINGS/ADVISORIES...

KY...Heat Advisory until 8 PM EDT /7 PM CDT/ Friday for KYZ023>043-

     045>049-053>057-061>067-070>078-081-082.

IN...Heat Advisory until 8 PM EDT /7 PM CDT/ Friday for INZ076>079-

     083-084-089>092.



&&



$$



SHORT TERM...KDW

LONG TERM...KDW

AVIATION...KDW

