Area Forecast Discussion
Issued by NWS Jackson, KY
Issued by NWS Jackson, KY
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174 FXUS63 KJKL 270517 AFDJKL AREA FORECAST DISCUSSION National Weather Service Jackson KY 1217 AM EST Thu Nov 27 2025 .KEY MESSAGES... - A cold and drier airmass will settle into the region for Thanksgiving and Black Friday. - There is still considerable uncertainty in the forecast for the early to middle part of next week. Some wintry precipitation is possible during the Monday night through Tuesday night period. && .UPDATE... Issued at 1217 AM EST THU NOV 27 2025 Minor changes were made to the sky grids to better capture current trends. Also refreshed the forecast by incorporating the most recent regional observations. Little to no changes were made to the forecast. UPDATE Issued at 854 PM EST WED NOV 26 2025 Minor edits were made to the winds over the next few hours, as gusts have dropped off around the area. Forecast was also updated with the most up to date observational data across the area. Otherwise, forecast remains on track. UPDATE Issued at 603 PM EST WED NOV 26 2025 Made some minor edits to Sky grids through this evening based on current cloud cover not being quite as expansive as the previous forecast had. Otherwise, the forecast is on track with no significant changes. && .SHORT TERM...(This evening through Thursday night) Issued at 220 PM EST WED NOV 26 2025 19Z sfc analysis shows a cold front now exiting eastern Kentucky. This is bringing gusty west to northwest winds of up to 35 mph to mainly northern parts of the area in its wake. An SPS is in effect for these winds for locations generally north of a line from Jackson County east to Pike County. In addition, colder air is working into the JKL CWA with readings ranging from the upper 30s in the northwest to the mid 50s in the far southeast. At the same time, dewpoints have fallen into the upper 20s and lower 30s throughout the area. After some initial sunny skies in the wake of the front, additional clouds are streaming in for the northern parts of the area this afternoon, while the last of the spotty light rain exited with the boundary. The models, and their individual ensemble suites, are in pretty good agreement aloft through the short term portion of the forecast. They all depict a strong, compact shortwave trough lifting through the Great Lakes tonight into Thursday morning. While that feature pulls away from the area, more energy will be pouring into the Tennessee Valley and start to consolidate over the Deep South before it sweeps east and off the Carolina coast by Thursday evening. This process will keep fast northwest flow at mid-levels over eastern Kentucky, but the better impulses will pass by either north or south of our area of responsibility. The very small spread among the models bolstered using the NBM as the starting point of the forecast grids with minimal adjustments needed - mainly to include some small terrain distinction for temperatures tonight and more so Thursday night for some enhanced ridge to valley differences. Sensible weather features dry and colder air brought in on slowly diminishing northwesterly winds in the wake of the cold front that passed out of the area during the afternoon. Some low clouds trail behind the front, north, but for the most part skies will be clearing by late evening. This will make for a chilly night, across the board, as readings bottom in the upper 20s and lower 30s by Thanksgiving morning. More sunshine can be expected on Thursday thanks to high pressure between systems while temperatures struggle to get out of the 30s for most places. This will lead to an even colder night with more in the way of terrain distinction in temperatures into Friday morning. Despite the chill, eastern Kentucky will be spared some of the worst weather, and the travel mess that goes along with it, taking place well to the north of Kentucky this holiday period. The changes to the NBM starting point were primarily focused on adding in more details for the temperatures tonight to include some minor ridge to valley distinctions with more showing up Thursday night. As for PoPs, kept them in the single digits or zero, in line with all guidance through Thanksgiving night. .LONG TERM...(Friday through Wednesday) Issued at 215 PM EST WED NOV 26 2025 The period begins Friday morning with dry northwesterly flow and cold advection continuing on the upstream side of a highly-amplified upper trough over the East Coast. The cold advection winds down by the evening as surface high pressure moves over the area, with warm advection beginning late Friday night and increasing into the weekend ahead of the next system which arrives late Saturday and lasts through much of Sunday before exiting to the east. This shortwave will dig southeast from the PacNW through the Central Rockies into the Central CONUS before ejecting northeast through the Great Lakes and Ohio Valley through the day Sunday. There may be some initial p-type concerns in the far northeastern and southeastern parts of the forecast area at the onset of precipitation Saturday night, which may struggle to warm up earlier in the day after the chilly conditions from the morning, with an hour or two of light wintry precipitation possible due to evaporational cooling of a dry low-level air mass. However, no winter weather impacts are expected at this time as increasingly warmer air moves into the region and changes any potential wintry precipitation to all rain. Previous WPC/CPC outlooks highlighted parts of the area for a heavy rain potential with this system, but it looks like the progressive nature and better moisture advection being diverted more south and east will keep heavy rain concerns minimal. After what is increasingly looking like a drier period of weather Sunday night into Monday (despite the NBM chance PoPs currently), the next system arrives with an amplified shortwave moving from west to east across the CONUS for late Monday night through Tuesday. There are still significant model disagreements and run-to-run inconsistencies between and within operational and ensemble member systems with this system, but it bears close watching due to potential wintery weather concerns for the late Monday night through Tuesday night period, as it appears the rain-snow low-level thickness line will be situated across at least parts of the forecast area. Depending on how the system evolves, cold advection upslope snow showers may occur Tuesday night into Wednesday on the back side of this system. Users of the NWS and NDFD forecasts are advised to not rely solely on deterministic forecasts of wintery precipitation and especially snow accumulations this far out. Forecasts are virtually guaranteed to change many times between now and the early to middle part of next week. As it stands as of early afternoon Wednesday, NBM v4.3 probability of exceedance values for greater than 1 inch of snow for the Tuesday time period range from 15 to 25 percent mainly north of the Mountain Parkway, and roughly 5 to 15 percent from the Mountain Parkway south through the remainder of southeastern Kentucky to the Tennessee and Virginia borders. && .AVIATION...(For the 06Z TAFS through 06Z Thursday night) ISSUED AT 1217 AM EST THU NOV 27 2025 Winds have largely diminished across the area, with KSJS and KSYM holding on to some lingering gusts up to 15 KTS. KSJS may retain elevated winds through the overnight. Clouds have hung around some with a OVC050 deck expected to clear out of the area over the next few hours. VFR conditions are expected through the TAF period. Winds are expected to return again Thursday morning, with gusts 15-20 kts expected at all TAF sites. Wind are then expected to diminish around 20-23Z Thursday, as skies clear. && .JKL WATCHES/WARNINGS/ADVISORIES... None. && $$ UPDATE...GINNICK SHORT TERM...GREIF LONG TERM...CMC AVIATION...GINNICK