999 FXUS63 KJKL 142348 AFDJKLAREA FORECAST DISCUSSION National Weather Service Jackson KY 748 PM EDT Sun Sep 14 2025
.KEY MESSAGES...
- Mainly dry weather is expected to persist through Thursday night.
- Temperatures are forecast to be above normal through Friday.
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.UPDATE... Issued at 748 PM EDT SUN SEP 14 2025
Forecast through the overnight remains on track. Given relatively good agreement among recent high-res model solutions for weak upper level energy coincident with increasing low-level moisture, have added a slight shower chance to far southeastern Kentucky on Monday afternoon.
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.SHORT TERM...(This evening through Monday night) Issued at 252 PM EDT SUN SEP 14 2025
North-northeasterly flow aloft will become increasingly more cyclonic in nature as a large double-barreled stacked low strengthens and grows in size over the Carolinas and southern Virginia. This feature then meanders in place as a surface low strengthens and moves toward the North Carolina coastline. Meanwhile, a narrow mid-levelhigh ridge continues, extending from Texas northeast to the Great Lakes.
Our tranquil and warm weather pattern will continue through the short-term period, with mostly clear skies through tonight gradually giving way to increasing high clouds from the east through Monday night on the periphery of the low. The main impact will be slightly cooler daytime temperatures and less ridge-valley splits in overnight low temperatures, and this will moreso be the case in the far eastern parts of the forecast area.
.LONG TERM...(Tuesday through Sunday) Issued at 340 PM EDT SUN SEP 14 2025
The upstream positively-tilted shortwave trough that clips through the Northern Plains early this week will lift into Ontario and Quebec slowly through the week, strengthening as it is absorbed into the parent longwave trough at the end of the week. Ahead of the trough, a ridge sits over the Great Lakes area. Meanwhile, another closed upper low off the Carolina coast will retrograde back to the shoreline before pushing north through the Northeast. Global ensembles are in good agreement about the progression of this synoptic pattern through midweek.
Tuesday and Wednesday will have high temperatures in the low to mid 80s at elevations below 2kft, with temperatures staying cooler in the Cumberland Mountains in the 70s or even as low as upper 60s. Overnight lows will drop to mid 50s. Northeasterly flow along the western periphery of the east coast low will advect moisture into the area through Wednesday, increasing cloud cover and bringing dew points into the 60s. PoPs remain below 10% Tuesday and Wednesday, though patchy ground fog will be possible in the valleys.
Confidence is high that the wave along the eastern seaboard will move northward in time for ridging to build in its wake Thursday, with warm air advection increasing temperatures into the upper 80s on Thursday and Friday. PoPs
NWS JKL Office Area Forecast Discussion