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 209 AM CDT Thu Sep 10 2026

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 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 Wednesday: 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

(06Z TAFS) Issued at 1229 AM CDT Thu Sep 10 2026

VFR conditions will prevail through the period. Isolated convection will be possible beginning Thursday afternoon into the evening near southern TAF sites./KP/

PRELIMINARY POINT TEMPS/POPS

Jackson 96 73 93 72 / 10 20 70 20 Meridian 96 72 93 71 / 10 20 80 30 Vicksburg 96 73 93 72 / 10 10 60 20 Hattiesburg 93 73 91 73 / 50 40 90 20 Natchez 95 73 93 72 / 20 20 70 10 Greenville 98 74 96 72 / 0 10 30 20 Greenwood 97 73 96 71 / 0 0 50 20

JAN WATCHES/WARNINGS/ADVISORIES

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