textproduct: Jackson

KEY MESSAGES

- Temperatures rise to the middle and upper 80s by the start of the weekend. - Dry conditions remain in place through Saturday afternoon, but a pattern shift will bring daily shower and thunderstorm chances to the region from late Saturday into next week.

UPDATE

Issued at 1026 AM EDT THU JUN 4 2026

There are no changes to the forecast, with just the inclusion of the latest hourly T/Td grids with an interpolation into the currently hourly forecast through early this afternoon.

UPDATE Issued at 720 AM EDT THU JUN 4 2026

No significant changes were made to the forecast with mainly just the inclusion of the latest obs and trends for the T/Td/Sky grids. These minor adjustments have been sent to the NDFD and web servers along with a freshening of the zones.

LONG TERM

(Friday night through Wednesday) Issued at 330 AM EDT THU JUN 4 2026

CONUS has long been in a omega-block type pattern, with two upper level lows on either coast, and a ridge of high pressure in the vicinity of the Central Plains. This overall pattern has evolved, with high pressure getting forced east of the area Friday, in favor of an incoming shortwave. This incoming shortwave is expected to traverse the Great Lakes Friday evening. Meanwhile, a separate, subtropical low ejects out of the Southwest into the Southern Plains by Saturday. This will help transport moisture north into the Mid- Mississippi Valley.

For sensible weather, mostly clear conditions are expected Friday night, with lows in the upper 50s in valleys, and low to mid 60s along ridge tops. Some patchy areas of fog may develop overnight, but should mix out by mid-morning Saturday. Saturday looks to be dry through the day, with a mix of sun and clouds and highs in the mid to upper 80s.

As the Great Lakes shortwave progresses into New England, the trough axis, and the system's cold front, extends just north of the area into the southern Ohio Valley. This will yield isolated to scattered shower and storm chances across northern portions of the forecast area (At this time, primarily the Mountain Parkway and north). Overnight temperatures will remain elevated in the mid to upper 60s under light southwesterly winds.

Heading into Sunday morning that Southwest upper low makes its way into the Mid-Mississippi Valley in a quasi Rex Block type set-up. This will increase shower and storm chances across the entire forecast area Sunday afternoon. Temperatures remain warm in the mid to upper 80s.

The evolution of the Rex Block is hard to pinpoint at the current temporal range, but confidence is high that rain chances will be higher at the middle and end of the long term period than they were at the beginning. Temperatures generally stay in the mid to upper 80s during the day and mid to upper 60s in the evening through mid-week.

AVIATION

(For the 12Z TAFS through 12Z Friday morning) ISSUED AT 740 AM EDT THU JUN 4 2026

Valley fog will bring localized IFR conditions in parts of southeast Kentucky early this morning and late tonight, but shouldn't affect any of the TAF sites, except perhaps at KSME for a brief amount of time. Otherwise, VFR conditions prevail through the period, with only some sparse fair weather cumulus this afternoon. Winds will be light and variable through the period, as well.

JKL WATCHES/WARNINGS/ADVISORIES

None.