880 FXUS63 KJKL 060947 AFDJKLAREA FORECAST DISCUSSION National Weather Service Jackson KY 547 AM EDT Mon Oct 6 2025
.KEY MESSAGES...
- Dry and warm conditions will prevail again today.
- A cold front will bring an area of showers and perhaps some thunderstorms moving southeast over the area Tuesday and Tuesday night, followed by cooler weather to finish the week.
- There is a slight risk of excessive rainfall Tuesday through Tuesday night, with isolated amounts of 2 to 3 inches of rain possible.
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.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...(Tuesday night through Sunday) Issued at 547 AM EDT MON OCT 6 2025
Showers/thunderstorms should be ongoing as we move into Tuesday night, as a cold front and upper trough move in from the northwest. The front will exit to our southeast late tuesday night and early Wednesday while the upper trough slips to our east. 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 closed upper low next weekend. The ECMWF and GFS have both shifted the low`s placement northeastward since yesterday, and now show it in the vicinity of VA and the Carolinas by late Sunday. Along with this, there is development of a coastal surface low. The new scenario favors precip being confined to areas to our east.
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.AVIATION...(For the 06Z TAFS through 06Z Monday night) ISSUED AT 256 AM EDT MON OCT 6 2025
Localized valley fog will bring sub-VFR conditions to some areas early this morning, especially in southeast KY, but it`s not expected to affect TAF sites. Otherwise, VFR conditions are forecast.
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.JKL WATCHES/WARNINGS/ADVISORIES... None.
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SHORT TERM...HAL LONG TERM...HAL AVIATION...HAL
NWS JKL Office Area Forecast Discussion