textproduct: Jackson

KEY MESSAGES

- Daily chances for showers and thunderstorms this afternoon to far northern Kentucky, then persist across the entire area through the new work week.

- The greatest rain chances are on Monday, Tuesday, and Wednesday, and the potential for multiple rounds of locally heavy rainfall poses a risk for isolated flooding in this time frame.

- Hot and humid conditions escalate through the week, with widespread apparent temperatures in the mid to upper 90s likely by Thursday and Friday.

UPDATE

Issued at 955 AM EDT Sun Jun 7 2026

Area observations were blended into the forecast grids, and the previous forecast remains on track. A deck of mid-level clouds remains draped across the central third of the forecast area, with occasional light returns noted on radar. Based on nearby webcams, this is likely virga, and rain is not forecast to reach the ground in most of Eastern KY today. Once diurnal warming yields highs in the 80s this afternoon, a few showers and storms may develop north of the Mountain Parkway, with mentionable PoPs relegated to Fleming County. Northern locales are currently experiencing less sky cover, thus they are more likely to reach convective temperatures in the upper 80s. Further to the south, the sky cover is expected to mix out later this afternoon, and temperatures should accordingly recover into the mid 80s. If the cloud cover sticks around though, forecast highs could under- perform there. Regardless of pop-up convective development, significant weather impacts are not expected today. This makes for a warm, but generally pleasant, end to the weekend.

UPDATE Issued at 710 AM EDT SUN JUN 7 2026

No substantive changes were needed with this forecast update. Patchy mid and high clouds continue to drift across the area while temperatures have dipped into the upper 50s, colder valleys, to near 70F, warmest northern ridges.

LONG TERM

(Monday night through Saturday) Issued at 539 AM EDT SUN JUN 7 2026

The long term period will open with an upper level ridge over the eastern CONUS, with a closed upper level low over the Canadian Prairie and a relatively defined shortwave just west of the forecast area. Farther west, a closed upper level low sits off the coast of British Columbia, with general troughing over the western CONUS. Although rain chances are expected to wane overnight Monday with the loss of diurnal heating, height falls associated with this shortwave will provide enough lift for additional precipitation chances on Tuesday, particularly as the upper level ridge translates east and continues to break down. A moist air mass will already be in place, with LREF mean PWATs generally ranging from 1.6 to 1.8 inches across most of the forecast area by Tuesday afternoon; this represents values in at least the 95th percentile compared to climatology. Instability will be adequate for some thunderstorms, with LREF mean MUCAPE in the neighborhood of 500-1000 J/kg. This instability will be driven largely by excessive moisture (dewpoints in the upper 60s to low 70s); however, lapse rates will generally be poor, and abundant cloud cover will limit the development of a more robust thermodynamic environment. Also, given the absence of any upper level features directly overhead, shear will be pitiful, with effective shear generally remaining below 10 kts. This will keep storms fairly weak and disorganized, and thus the main convective hazard will be locally heavy downpours and potential isolated instances of flash flooding, particularly in areas that receive multiple rounds of convection. Once again, rain chances should decrease somewhat on Tuesday night with the loss of daytime heating.

By Wednesday, troughing over the western CONUS will progress eastward, with upper level ridging building over the Mississippi Valley between this western trough and the aforementioned shortwave. At this time, there is significant model disagreement over the exact progression of these features, including the departure of the initial shortwave and the eastward extent of the stronger trough to the west. Generally, there is agreement that height falls are expected through at least early Wednesday, which should allow for at least some rain chances in the area. Details remain less clear after that. Some models (such as the GFS) depict a higher amplitude ridge building more quickly, resulting in height rises by Wednesday afternoon. This would result in lower PoPs for the forecast area at this time. In contrast, other solutions (such as the ECMWF) favor a slower building and lower amplitude ridge. In this scenario, flow aloft would be closer to zonal ahead of the trough, resulting in continued height falls and higher PoPs throughout Wednesday. LREF 24 hour QPF suggests a 0.25 in difference between 25th and 75th percentile values across most of our area, demonstrating this model spread. Therefore, although NBM QPF was retained, the forecast remains generally low confidence at this time.

Looking ahead, troughing continues to progress east towards the end of the work week. Unfortunately, there is limited model consensus regarding the southward extent of the trough, which itself depends on the evolution and strength of the aforementioned upper level ridge. Regardless, convection appears possible each day through Saturday given the continued presence of moisture (dewpoints remain in the upper 60s and low 70s) and the generally favorable upper level pattern. However, confidence remains low in the details of rain chances at any particular time.

AVIATION

(For the 12Z TAFS through 12Z Monday morning) ISSUED AT 737 AM EDT SUN JUN 7 2026

VFR conditions will generally prevail through the TAF period. Patchy mid- and high-level clouds will continue to stream in from the northwest today. However, lower ceilings will develop from the southwest late tonight and likely impact SME and LOZ toward the end of the TAF period as moisture increases with an approaching upper level shortwave trough. Winds will be light and variable through the period, generally around 5 kts or less.

JKL WATCHES/WARNINGS/ADVISORIES

None.