textproduct: Jackson

KEY MESSAGES

- A cool and dry air mass lingers into early next week. - Frost is expected in valley locales tonight, with freezing temperatures possible in the most sheltered and shaded hollows. - Rain chances re-enter the forecast from Wednesday night into Thursday ahead of a strong cold front's approach.

- The first snowflakes of the season could fall on Friday as much colder air moves into Eastern Kentucky on the back side of that system.

LONG TERM

(Tuesday through Sunday) Issued at 408 PM EST Sun Nov 8 2026

There is not a cloud in the sky across Eastern Kentucky this afternoon, with ample sunshine allowing temperatures to rise into the upper 50s/lower 60s area-wide. Those values are a few degrees warmer than yesterday's highs, a byproduct of the more westerly winds observed in the lower levels of the column and the greater influence of a broad surface high. Further aloft, a drier continental airmass continues to advect into the region via NW flow. The resultant subsidence and diurnal mixing have combined to yield widespread afternoon dewpoints in the low to mid 30s. These crossover temperatures will set the stage for another frosty night, as the absence of clouds and slackening winds should yield efficient radiational cooling after dark.

Another light freeze cannot be ruled out in the most sheltered and shaded valleys, but the warmer start to the day and relatively stronger overnight winds should limit the areal extent of any freeze. Expect widespread valley lows in the 33-37 degree range, with crossover temperatures likely being met. In the immediate vicinity of the area's larger rivers, lakes, and streams, this should yield fog formation. Elsewhere, frost is favored, and a frost advisory has been issued area wide from Midnight to 10 AM. Ridgetops will experience the warmest temperatures (upper 30s), as they could remain mixed thanks to a modest increase in wind speeds aloft.

Once any fog/frost burns off on Monday morning, persistence forecasting should largely prevail. Continued NW flow aloft will sustain the dry air throughout the column, and mostly sunny skies should allow temperatures to warm into the lower half of the 60s area-wide that afternoon. This again marks a slight increase from the day prior's temperatures, which will make it harder to get to freezing conditions on Monday night. Expect-another night of ridge- valley splits in which the lower-end of the forecast MinT envelope will be contingent on how much dry air mixes down from aloft during the afternoon hours. Frost will likely develop in the coldest valleys, along with fog near the area's waterways, but the need for another frost/freeze headline is uncertain. We will be collaborating with neighboring WFOs and UK Extension Agriculture partners tomorrow to determine whether or not other further product issuances are needed, but those with sensitive plants or livestock are encouraged to take proper precautions as this pattern persists through mid- week.

AVIATION

(For the 18Z TAFS through 18Z Monday afternoon) ISSUED AT 1240 PM EST SUN NOV 8 2026

VFR conditions prevail for the duration of the 18z TAF period. Current satellite imagery reveals clear skies in place over much of the Ohio River Valley, and area observations indicate light and variable surface winds. These conditions are forecast to persist, although a few isolated wind gusts in the 15-20 knot range cannot be ruled out as diurnal mixing peaks this afternoon. River valley fog is anticipated to develop again tonight, but confidence was not high enough to explicitly mention this in the TAFS. Last night, the fog outperformed expectations and brought vsby reductions to KSME and KSYM. Interests at these two terminals should monitor for any updates in the 00z and 06z TAF package, as tonight's crossover temperatures will be more clear by then and confidence in fog formation should accordingly increase. Aside from any localized fog-related impacts, VFR conditions are forecast to continue into tomorrow, with mostly clear skies and light, westerly winds.

JKL WATCHES/WARNINGS/ADVISORIES

Frost Advisory from midnight tonight to 10 AM EST Monday for KYZ044-050>052-058>060-068-069-079-080-083>088-104-106>120.