283 FXUS63 KJKL 061850 AFDJKLAREA FORECAST DISCUSSION National Weather Service Jackson KY 250 PM EDT Mon Oct 6 2025
.KEY MESSAGES...
- Mainly dry and warm conditions will prevail again today.
- A cold front will bring an area of showers and perhaps some thunderstorms to the area Tuesday and Tuesday night, followed by cooler weather to finish the week.
- There is a slight risk of excessive rainfall Tue through Tue night, with isolated amounts of 2 to 3 inches of rain possible if storms move repeatedly over the same areas.
&&
.UPDATE... Issued at 1011 AM EDT MON OCT 6 2025
Some sprinkles or light showers have reached the ground near I-64 this morning and likely some sprinkles are occurring in parts of the Cumberland Plateau upstream of the Lake Cumberland Region. With this in min, updated to include some sprinkles in the north and west along with some slight chance pops nearer to or west of I-75 through midday to account for radar trends. Remaining hourly grids were freshened up based on recent observation trends.
UPDATE Issued at 756 AM EDT MON OCT 6 2025
Clouds are a bit more extensive than was expected early this morning, and this has been blended into the forecast for today. There are also some light returns on radar showing up near the northwest edge of the forecast area (and westward) due to shallow instability based around 850 mb. It`s questionable if this is reaching the ground, and the forecast has not been updated to include any precip for today, but it will need to be monitored.
&&
.SHORT TERM...(Today through Tuesday) Issued at 547 AM EDT MON OCT 6 2025
Early this morning, high pressure aloft is centered near the VA/NC coast, while surface high pressure is centered offshore. On the south side of the high, Atlantic and gulf moisture is advecting west and northwest into the southeast CONUS (still mainly to our south). Meanwhile, an upper trough extends from south central Canada southwestward into the western CONUS. The trough will advance eastward through Monday, especially its northern extent. This will flatten the upper high/ridging, suppressing it southward, while the surface high slips eastward. The advancing trough will also support a surface cold front which will arrive in Kentucky from the northwest on Tuesday. Flow between the departing surface high and the cold front will advect the moisture northward and northeastward. The front and upper trough will act on this to produce an area of showers which will move in from the northwest late tonight and Tuesday. Precipitable water is forecast to reach 1.5-2" ahead of the front. Should convection repeatedly fire over the same areas, efficient rain production could bring locally heavy amounts. A lack of rainfall recently will give a bit of cushion before excessive rain becomes a problem.
.LONG TERM...(Wednesday through Monday) Issued at 250 PM EDT MON OCT 6 2025
Showers/thunderstorms end late Tuesday night into early Wednesday morning as a cold front and upper trough move across from the west and northwest. This will leave us with west-northwest flow aloft and surface high pressure passing east over the Great Lakes on Wednesday, sending us noticeably cooler and drier air.
Multiple shortwave troughs are expected to move southeast in the flow aloft late in the week and consolidate into a complex upper low next weekend somewhere over the Central Appalachians and Mid- Atlantic regions, with the ECMWF and GFS in generally good agreement. Along with this, there is development of a coastal surface low that moves up the Southeast and Mid-Atlantic coastline while remaining offshore, perhaps taking on some subtropical characteristics. Regardless, the new scenario favors precip being confined to areas to our east. Thus, after Wednesday morning PoPs remain generally at or below 10 percent through the duration of the period.
&&
.AVIATION...(For the 18Z TAFS through 18Z Tuesday afternoon) ISSUED AT 158 PM EDT MON OCT 6 2025
VFR conditions are expected to prevail for the first 12 to 15 hours of the period. However, an area of showers associated with an approaching cold front should begin to begin to arrive from the northwest by the 06Z to 12Z timeframe and could result in MVFR conditions northwest of a KSJS to KJKL to KSME line which may affect KSYM before 12Z. The area of showers and perhaps some embedded storms should move further southeast into the area between 12Z and 18Z and is forecast to bring MVFR to all the TAF sites to end the period. Winds will generally be light and variable through tonight and then become south to southwest at 10KT or less to end the period.
&&
.JKL WATCHES/WARNINGS/ADVISORIES... None.
&&
$$
UPDATE...JP SHORT TERM...HAL LONG TERM...CMC/HAL AVIATION...JP
NWS JKL Office Area Forecast Discussion