textproduct: Jackson
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
- Widespread frost and a brief period of near-freezing to sub- freezing temperatures are likely early this morning.
- Frost is anticipated again from tonight into Monday morning, especially in the valleys of far eastern and southeastern Kentucky.
UPDATE
Issued at 720 AM EDT SUN OCT 18 2026
No significant changes were made to the forecast with mainly just the inclusion of the latest obs and trends for the T/Td grids. These minor adjustments have been sent to the NDFD and web servers along with a freshening of the zones.
LONG TERM
(Monday night through Saturday) Issued at 435 AM EDT SUN OCT 18 2026
The models remain in good agreement through the end of the upcoming work week. A ridge will sharpen up in the mid and upper levels over the central CONUS. This will lead to a prolonged period of dry weather across the Ohio and Tennesseee valleys. The model agreement decreases a bit more by next weekend, as the confidence lowers regarding the evolution of eastern Pacific as it ejects east of the Rockies.
Eastern Kentucky will be under the influence of the ridge through the period. Surface high pressure will mainly center to our north and northeast through Friday, allowing for only a slow moderation in temperatures. Skies will remain mostly clear through next week. Patchy frost will continue to be possible in the normally colder sheltered valleys once again Monday and Tuesday night, as drier low level air will likely mix down below the blended guidance during peak mixing. Highs will average in the upper 60s and lower 70s each day, with lows gradually warming through the 30s and eventually into the 40s each night.
AVIATION
(For the 12Z TAFS through 12Z Monday morning) ISSUED AT 730 AM EDT SUN OCT 18 2026
Clear skies and VFR conditions were the rule for eastern Kentucky at the 12Z TAF issuance. High pressure will keep those clear skies along with light and variable to northeasterly winds in place through the forecast period. It is worth noting that patchy dense fog formation in the river valleys this morning and again tonight should stay away from the TAF sites.
JKL WATCHES/WARNINGS/ADVISORIES
Freeze Warning until 9 AM EDT this morning for KYZ044-050>052- 104-106.
Frost Advisory until 9 AM EDT this morning for KYZ058>060-068- 069-079-080-083>088-107>120.
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