textproduct: Jackson

KEY MESSAGES

- A limited threat for dangerous heat stress will continue across much of the area into this weekend. Heat and humidity will likely increase again early next week.

DISCUSSION

Issued at 129 PM CDT Thu Sep 10 2026

The forecast remains on track:

Through Saturday: A surface ridge which helped to limit rain chances yesterday will begin to lose influence in our region as it retreats eastward over the Atlantic. Across North MS and perhaps into parts of AR and north LA, dewpoints will again mix down into the 60s with limited rain chances again this afternoon. Further south, an increase in deep layer moisture will accompany a surface trough lifting toward the Gulf Coast today. This will enhance diurnal convection and result in greater coverage of afternoon/early evening convection over the south half of the area. By tomorrow, along with the influence of the northward moving trough, a weak upper shortwave will approach the Midsouth with a weak summertime front stalling to our north, resulting in higher rain chances across a larger portion of the area than we've seen so far today. This regime will carry over into Saturday to some extent, though the shortwave will weaken and shift eastward.

It will still be seasonably warm and humid over the next few days, and heat indices may approach or briefly reach advisory thresholds in a few spots, but the heat stress threat is expected to be tempered enough by mixing north and increased precip/clouds south to preclude the need for an advisory at this time. We will still continue to highlight limited heat stress concerns through the weekend.

Sunday through Thursday: Upper ridging will begin to build back in across the Deep South early next week, leading us back to more typical isolated/scattered summertime diurnal rain chances and temperatures ticking back upward toward the upper 90s in some areas. With a rather muggy airmass still around, we may begin to see heat indices again reaching critical thresholds and heat advisories may ultimately be needed for some portion of the area. /DL/

AVIATION

(18Z TAFS) Issued at 1251 PM CDT Thu Sep 10 2026

Showers and thunderstorms will bring brief reductions in visibility to KHBG, KPIB, and KHEZ mainly before 00Z Friday, but chances for showers or storms begin to spread north toward Interstate 20 through the remainder of the period. Rainfall could lead to some MVFR ceilings or visibility before 12Z, but confidence was too low to include MVFR ceilings at the current time. /NF/

PRELIMINARY POINT TEMPS/POPS

Jackson 72 92 72 93 / 20 50 10 70 Meridian 72 91 71 92 / 10 80 40 90 Vicksburg 73 92 72 93 / 10 40 10 40 Hattiesburg 73 90 73 93 / 30 90 20 80 Natchez 73 92 72 93 / 10 60 10 60 Greenville 74 96 72 95 / 0 50 20 40 Greenwood 73 95 71 94 / 10 40 20 60

JAN WATCHES/WARNINGS/ADVISORIES

MS...None. LA...None. AR...None.