Area Forecast Discussion
Issued by NWS Jackson, KY
Issued by NWS Jackson, KY
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844 FXUS63 KJKL 011944 AFDJKL AREA FORECAST DISCUSSION National Weather Service Jackson KY 344 PM EDT Sat Nov 1 2025 .KEY MESSAGES... - Light to moderate rain is expected to move into the region this afternoon and evening, peaking overnight, and dissipating Sunday morning. Highest chances will occur across western portions of the area (closer to I-75). - An isolated shower or thunderstorm can`t be ruled out through Sunday afternoon. - Dry conditions and below normal temperatures return for early next week, with highs only reaching the 50s to low 60s and nights deep in the 30s. - Warmer weather returns for the middle of next week. - After tomorrow (Sunday), the next chance for rain is expected on Friday. && .SHORT TERM...(This evening through Sunday night) Issued at 331 PM EDT SAT NOV 1 2025 High pressure that was in control yesterday through this morning is now moving east of the region, as a low pressure system continues to occlude across Lower Michigan. This surface system is in correlation with a strong upper level low that is currently diving southeastward across the Midwest, reaching western KY overnight. Throughout the day tomorrow (Sunday), these two (surface vs. upper level) systems will become detached, with a new surface low forming across the Tennessee Valley as the upper level low continues to track that direction. This will cut off flow to the Michigan surface low, which will lose strength, wrap in on itself, and dissipate by Sunday afternoon. A cold front associated with the first low pressure system over Michigan is currently stretched SE through the Ohio Valley, north-central and western KY, and farther into the lower Mississippi Valley. This front is expected to progress eastward, moving across the JKL CWA during the overnight, as heights aloft quickly lower ahead of the incoming upper level low. However, instead of exiting the state, the front will then stall across eastern Kentucky as the new surface low begins to form along this line, keeping some level of instability across the region through much of the day Sunday. In sensible weather terms, the continued influx of southerly flow in especially the mid and upper levels will continue to advect in warmer and moist air ahead of the approaching cold front today and tonight. There is a lot of surface dry air currently in place across eastern KY that the moisture will have to overcome, but expect this to occur and rain chances to begin over the next few hours in the western CWA, increasing and moving eastward as we head into the evening. The actual frontal boundary will impact eastern Kentucky overnight, which, coupled with the increasing energy aloft with the upper level low located over western KY, will lead to an uptick in rain chances across the CWA. The precipitation will begin to taper off on Sunday morning, however as the frontal boundary becomes more stationary and never actually exits the state, and the upper level low remains intact as the new surface low develops, the precipitation chances will not fully dissipate or exit. A few lingering showers may remain, especially in the southern CWA into the afternoon. In fact, given the increased energy in the area, and rising daytime temps, can`t rule out a few rumbles of thunder either (though the likelihood is quite low). Though the upper level low will remain just to our south Sunday afternoon and Sunday night, our location on the northern side will mean two things, less moisture advection and colder temperatures with the strong influx of N to NW flow. This will effectively cut off any remaining rainfall and give way to clearing conditions by Sunday evening. As surface high pressure to our southwest also begins to nose it`s way closer to the state Sunday night, temperatures will drop, and surface winds will lesson. Therefore, would not be surprised if we see some pretty good fog development given the moist environment Sunday night into Monday morning. Temperatures could be some 10 to 15 degrees colder Sunday night/Monday morning compared to tonight/Sunday morning after this system moves through, especially in the deeper valleys where cold air is likely to sink and settle with the increasing subsidence. Kept with previous forecast of ridge/valley differences, and was fairly liberal with the fog forecast. .LONG TERM...(Monday through Saturday) Issued at 245 PM EDT SAT NOV 1 2025 The long term opens with a closed low over the southeast with ridging building in from the west. Zonal flow will dominate the extended through Thursday. This will result in dry and quiet weather. Models do depict an upper level low passing through the Great Lakes region on Wednesday, however, there should be little to no impact on local weather in Eastern Kentucky. A trough begins to deepen across the Central Plains on Friday, leading to a frontal passage and rain. Active weather continues for the weekend with a quick shortwave passage Saturday into Sunday leading to the next chance of precipitation. Temperatures will warm through Wednesday, with afternoon highs generally in the 60s through next week. Wednesday and Friday may reach upper 60s. For the evenings, clear skies and light winds will favor strong ridge valley splits. As much is expected Monday and Tuesday night, with valleys and colder hollows dipping into the low 30s. Along ridgetops, slightly stronger winds will favor temperatures being in the lower 40s. Beyond night, lows will generally be in the 40s, getting slightly warmer each night. && .AVIATION...(For the 18Z TAFS through 18Z Sunday afternoon) ISSUED AT 150 PM EDT SAT NOV 1 2025 VFR conditions are currently on tap after fog dissipated in the valleys this morning. Unfortunately this is not set to remain in place, as an incoming low pressure center and weak cold front will result in deteriorating conditions into the overnight. Clouds will begin moving in from the west during the afternoon. These clouds should generally remain just above VFR until tonight, at which point rainfall will begin to accompany, possibly lowering VIS and CIGs into MVFR. Can`t rule out some additional drops at times, depending on if the rate of the rain picks up. Otherwise, most of the rain should diminish and increase conditions heading into the daytime Sunday. Winds should generally be under 10 kts through the period. && .JKL WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...JMW LONG TERM...GINNICK AVIATION...JMW