textproduct: Jackson

KEY MESSAGES

- Dry and very warm conditions continue through tonight, with afternoon highs in the mid to upper 80s.

- Daily chances for showers and thunderstorms return Sunday afternoon and persist through most of next week.

- Rain chances peak Monday through Wednesday, with high moisture supporting a risk for locally heavy rainfall.

- Humid conditions continue through the week, with afternoon highs remaining generally in the 80s.

UPDATE

Issued at 1045 AM EDT SAT JUN 6 2026

Cloud cover is beginning to mix out in SE KY this morning, and temperatures have begun their climb towards widespread highs in the mid 80s. We witnessed a few sprinkles during our commutes to the WFO along the KY-30 corridor this morning, but those radar returns have subsided as of the time of writing. Additional, faint radar returns are observed upstream along the I-71 corridor, but models continue to collectively resolve midlevel height rises over the commonwealth today. This should relegate any convective activity in the Bluegrass to a light sprinkle, and measurable/mentionable precipitation chances remain displaced to the north of the CWA later this afternoon/evening. So, the QPF previously resolved over Fleming County was removed with this morning's forecast update. Aside from this, the previous forecast generally remains on track.

UPDATE Issued at 637 AM EDT SAT JUN 6 2026

Temperatures have remained several degrees milder than previously forecast over the northern foothill with some mixing/thicker mid- level cloud cover early this morning, so hourly temperature forecasts were brought into line with observations. Valley fog has also been very limited. Otherwise, forecast seems to be in good shape for the day ahead with mostly to partly sunny skies and widespread highs in the 80s.

LONG TERM

(Sunday night through Friday) Issued at 342 AM EDT SAT JUN 6 2026

The period should start with upper level ridging extending from the southeast CONUS sharply northward over the Great Lakes. A weakening upper low (currently over west TX) will be riding up the western side of the ridge while a trough amplifies southeastward on the eastern side. A surface cold front associated with the eastern trough should be near or north of the Ohio River at the start of the period, losing southward momentum as its supporting trough departs. A rather moist air mass should be in place over our area south of the front. With instability waning and ridging overhead, Sunday night will probably be dry, despite the possible proximity of the front.

A modest remnant trough from the western upper low is expected to ripple/ride through the ridge on Monday into Wednesday and result in geopotential height falls over us. At the same time, our low level flow is forecast to increase out of the southwest and provide warm/moist advection as what's left of the front lifts back north. This will probably result in our highest POP of the week as convection (largely diurnal) occurs. Even with the trough passing over, our flow aloft should remain fairly weak and limit storm organization. However, high atmospheric moisture (PW near 2" in the GFS) would support locally heavy rainfall.

The upper trough departs Wednesday night and upper level ridging reestablishes over the lower Great Lakes and Ohio Valley. There is model disagreement as to how strong this renewed ridging will be. If it's modest, it may not be enough to overcome diurnal destabilization and prevent deep convection, especially if a weak cold front can approach from the north. Even if its stronger, the ridge may be to our northwest and allow thunderstorms to develop over us on its periphery. That being the case, a POP will remain in the forecast Thursday and Friday, but with a lower probability compared to Tuesday and Wednesday.

AVIATION

(For the 18Z TAFS through 18Z Sunday afternoon) ISSUED AT 200 PM EDT SAT JUN 6 2026

Efficient diurnal processes are forecast given the ongoing weather pattern, and this corresponds with the development of a cu field across the terminals this afternoon. Scattered spatial coverage of that cu field is observed across the southern two-thirds of the forecast area. Further to the north, increased mid/upper level clouds relegated that development to "few" coverage. Cu should subside towards sunset, as will sporadic afternoon wind gusts between 15 and 20 knots. Additional mid- to high-level clouds linger overnight, but all ceilings will be above VFR thresholds. River valley fog development is expected overnight, but given the antecedent dryness and the lack of mentionable PoPs today, it is not currently forecast to affect the TAF sites. Fog potential looks greatest in the Cumberland River basin, so vsby reductions cannot be entirely ruled out at southern terminals like KSME and KLOZ. Recent probabilistic guidance has backed off the LAMP data's idea that these terminals will experience categorical impacts, so fog potential was not explicitly mentioned in the 18z TAFs. Observational trends will need to be monitored overnight though. An increase in moisture tomorrow morning will lead to greater cloud cover towards the end of the period, but mentionable rain chances hold off until after 18z tomorrow afternoon. As such, VFR conditions are expected to prevail at all TAF sites for the current issuance period.

JKL WATCHES/WARNINGS/ADVISORIES

None.