textproduct: Jackson

KEY MESSAGES

- A low potential for rain returns today and lingers into Monday morning.

- A more significant system brings a higher potential for widespread rain arriving around the middle of the week.

UPDATE

Issued at 942 AM EST SUN NOV 1 2026

Freshened up the forecast with the latest observational data from around the area. Downslope southeasterly winds continue to keep temperatures elevated in southeastern parts of the area, near the TN and VA border. The forecast remains on track for a shortwave to move through the area, leading to light showers.

UPDATE Issued at 710 AM EST SUN NOV 1 2026

With cloud cover and downslope flow in the southeast portions of the CWA, temperatures in some locations nearer to the TN and VA border were running warmer than forecast. Hourly mainly temperature and dewpoint grids for the next few hours were freshened up based on recent observations.

LONG TERM

(Monday night through Saturday) Issued at 400 AM EST SUN NOV 1 2026

Upper ridging shifts across eastern KY and sections of the Southeast Monday night to Tuesday. Meanwhile, the upper level trough moves into the Central Conus and approaches the OH Valley from the west. Recent deterministic GFS and ECMWF runs and GEFS/EPS means develop a closed low by late Tuesday, but then differ in the track and how long it is maintained and the downstream evolution. The common theme of deterministic and ensemble guidance is that the axis of the 500 mb trough should remain west of eastern KY into at least Friday. Also, there is consensus in the guidance on bringing a lead shortwave trough into the OH Valley on Wednesday which crosses the area by late Wednesday night or early Thursday. At the same time, a sfc low pressure system should track from the Central and into the eastern Conus and through the OH Valley. As this system crosses the area, 00Z LREF from the 31st has mean PW rising into the 1.2 to 1.4 inch range on Wednesday afternoon/evening or roughly into at least the 90th to 97th percentile for early November. This system should bring the potential for more widespread rainfall to the region from Wednesday into Thursday. Some locally heavier rainfall is not out of the question if there were to be any training given the degree of anticipated moisture. WPC has placed western portions of the CWA in a marginal risk (Level 1 of 4) for excessive rainfall for Day 4.

Thunder cannot be ruled out as the midweek system passes though instability will be limited with MUCAPE peaking at 250 J/kg or less per 00Z LREF. Winds may also become a bit gusty with the midweek system in the Tuesday night to Wednesday evening period, with the strongest gusts most probable in the higher terrain near the VA border. ENS based probabilities for wind gusts over 40 mph are maximized in the 20 to 30 percent range near the VA border/harlan County per the 00Z LREF. Otherwise, chances for rain linger until the 500 mb trough axis crosses the area around the late Friday to early Saturday timeframe.

Temperatures will be mild on Tuesday, on the order of 10 to 15 degrees or so above normal for highs and remain mild until the front crosses the region at midweek. Temperatures trend colder to end the week as the trough moves across the area.

AVIATION

(For the 12Z TAFS through 12Z Monday morning) ISSUED AT 720 AM EST SUN NOV 1 2026

VFR conditions with primarily mid and high level clouds were observed to begin the period. As a disturbance approaches from the west and southwest, the atmosphere will gradually be saturating from the top down and low clouds should develop/arrive after 18Z and then spread to the north and east. VFR should generally prevail, however. Light rain is possible mainly after 18Z for locations near and west of I-75, with what rain that materializes spreading to the east and northeast through the end of the period. If rain is more substantive than currently forecast, some brief sub VFR reductions cannot be completely ruled out toward the end of the period mainly in the north and west, but confidence in it its occurrence continues to not be high enough to include at this juncture.

JKL WATCHES/WARNINGS/ADVISORIES

None.