Area Forecast Discussion
Issued by NWS Jackson, KY
Issued by NWS Jackson, KY
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940 FXUS63 KJKL 100929 AFDJKL AREA FORECAST DISCUSSION National Weather Service Jackson KY 429 AM EST Mon Nov 10 2025 .KEY MESSAGES... - The coldest airmass so far this season continues to move into the region. - The first snow the event of the season will affect the region into tonight. Rounds of snow showers will result in mainly light accumulations, especially on grassy and elevated surfaces. - Locations at 2000 feet and above near VA should experience more sustained travel impacts. However, rounds of snow showers will lead to some accumulations and reduced visibilities areawide. && .SHORT TERM...(Today through Tuesday) Issued at 425 AM EST MON NOV 10 2025 Early this morning, the axis of an upper level trough extended from western Quebec across Ontario and the Great Lakes to the OH valley to northern Gulf of Mexico in an amplified pattern with an upper level ridge centered in the southwest Conus that extended across the Great Basin to to the Northern Rockies to Saskatchewan. An upper level low moving within this trough was approaching the Lower OH Valley from the northwest at this time with a lead shortwave lifting across eastern KY at this time. This and an upslope component to the flow and continued cold air advection is resulting in flurries and some embedded light to moderate snow showers across eastern KY and adjacent areas of the OH Valley region. At the surface, low pressure was centered over New England with a cold front trailing south east of the eastern seaboard to southern FL while sfc high pressure was centered in the Plains. Temperatures as of 4 AM were in the low 30s in the deeper valley locations in the south and east and mainly upper 20s elsewhere. Temperatures had dropped into the mid 20s above 2500 feet and even the teens above 3500 feet with Black Mtn recently reporting a temperature of 18 degrees. Today and tonight, the upper level low is expected to track southeast into Central KY through midday and across eastern Ky this afternoon and evening. The upper level low and trough axis will move east of eastern KY this evening into the overnight and 850 mb temperatures should begin to warm through the night. Low level moisture remains in place and this system will bring some additional moisture with it in the low to mid levels. The approaching upper low and associated cold air advection with 850 mb temperatures poised to drop to the -10C to -13C range as the upper low passes will serve to steepen lapse rates when combined with daytime heating. At the same time, the low level flow will keep a westerly to northwest upslope component. Thus, an increase in coverage and intensity of snow shower activity is expected during the late morning to mid afternoon timeframe from northwest to southeast with the more intense and greater coverage of snow showers lingering well into the evening in the southeast. Snow showers should decrease in intensity and taper to flurries and eventually end with some clearing through the late evening into the overnight as the combination of the warm advection and increasing heights as well as low level winds become more anticyclonic as the sfc high builds into the MS Valley and Southeast and toward eastern Ky. At the same time, temperatures will struggle to peak near the freezing mark for locations below 2000 feet while temperatures at 2000 feet and above do not make it out of the 20s with the cold airmass in place. Some areas of more persistent snow shower bands are anticipated, but the location of these is a bit uncertain. The VA border counties are one area where over the higher terrain above 2000 or 2500 feet there should be a max in accumulation and where the bands are more persistent further north and west there will be other locations that probably pick up over an inch of snow as well. Some places along or near the escarpment are possible locations of the additional bands. The more widespread and intense snow showers should occur into the evening commute today for locations further north and west of the VA border counties with some of this more impactful in some locations as compared to others. Snow may melt at least from roadways in between snow showers, but some snow showers could be intense enough for periods of slush or snow covered roads in the afternoon to early evening along with significant reductions in visibility. Lows tonight should range from the upper teens to mid 20s, depending on the degree of clearing with colder readings in the more western locations and warmer readings nearer to the WV border. Tuesday, the pattern will deamplify across the Conus with the axis of the upper trough pulling further east and a gradual increase in 500 mb heights. Additional shortwaves should move through the broadening trough with an increase in mid and upper level moisture through the day on Tuesday with the passing shortwaves and in advance of an approaching warm front. Thus should result in mostly clear to clear skies late tonight to early Tuesday followed by an increase in clouds as the day progresses. With the 850 mb temperatures continuing to modify, temperatures will warm, but still should average 15 to 20 degrees below normal. .LONG TERM...(Tuesday night through Sunday) Issued at 255 AM EST MON NOV 10 2025 The main change to the extended forecast this morning were to add more terrain distinction to nighttime temperatures through the rest of the week and into the start of the weekend. Otherwise, mostly dry weather should hold through the first part of the weekend before another large weather system approaches from the west returning rain chances to the area by late Sunday. The previous long term discussion follows: Confluent northwesterly mid-level flow on the back side of a highly amplified upper trough exiting the East Coast Tuesday morning will quickly transition to a more west-northwesterly flow through Wednesday as an active jet stream remains across the area. This will promote fairly moderate warm advection in the lower levels across the Ohio Valley region, allowing for temperatures to quickly rebound back to near normal levels by Wednesday. A weak cold front crosses the area later Wednesday with high pressure moving into the area for Thursday, before warm advection begins to increase again across the much of the central part of the country allowing for temperatures to rise to above normal levels for the end of the week into the weekend. Model uncertainty increases by next weekend, especially upstream over the central part of the country, but confidence is high in strong warm advection will allow for above normal temperatures during that time. Any potential precipitation chances appear limited to the late week into the weekend time frame with possible light rain showers associated with a passing warm front. && .AVIATION...(For the 06Z TAFS through 06Z Monday night) ISSUED AT 100 AM EST MON NOV 10 2025 The bulk of the snow showers have shifted east of the TAF sites for all but SJS. This will will mean mainly MVFR CIGs but some brief IFR or lower possible with any stray snow showers. These light snow showers and flurries will be around through the morning, though by afternoon we will likely see more impactful snow showers with poor aviation conditions due to low CIGs and times of low VIS lasting into the first part of the evening. West to northwest winds will generally be around 10 kts with gusts as high as 20 kts through the rest of the night. Look for similar wind speeds favoring the northwest direction during the day along with gusts up to 25 kts accompanying any of those afternoon heavier snow showers. && .JKL WATCHES/WARNINGS/ADVISORIES... Winter Weather Advisory from 9 AM this morning to 7 PM EST this evening for KYZ044-050>052-058>060-068-069-079-080-083-084-104- 106-108-111-114. Winter Weather Advisory from 9 AM this morning to 10 PM EST this evening for KYZ085-086-107-109-110-112-113-115>117-119. Winter Weather Advisory until 7 AM EST Tuesday for KYZ087-088- 118-120. && $$ SHORT TERM...JP LONG TERM...CMC/GREIF AVIATION...GREIF