textproduct: Jackson

KEY MESSAGES

- Dangerous heat stress will persist across the forecast area into next week.

- Rain chances begin increasing areawide Thursday, with chances continuing each afternoon through early next week.

DISCUSSION

Issued at 159 AM CDT Thu Sep 3 2026

Upper-level ridging will continue to dominate the regional weather, though will shift from the Mid-South to High Plains and then back again over the next several days. Heat will be a factor in the weather as this ridge remains stout. Closer to the Gulf Coast, however, we will see increasing rain chances associated with an easterly wave bring a surge of deeper moisture and eroding the edge of the ridge. Rain chances may nudge back to the south when the ridge centers over the High Plains over the weekend, but most days even a stray shower or storm could occur in northern parts of our CWA. Locally heavy rainfall with deep tropical moisture in place will be a possible concern. And wherever rain delays until afternoon hours, heat index values will still approach the 105+ range each day. Expect additional Heat Advisory headlines for at least parts of the area into next week. /NF/

AVIATION

(18Z TAFS) Issued at 1250 PM CDT Thu Sep 3 2026

Current radar scans show a few scattered showers and storms across portions of south MS. All TAF sites are currently reporting VFR conditions. Chances for thunderstorms will be mainly along and north of I-20 later this afternoon, so included PROB30 at all TAF sites. Any storms across the area will diminish around 0z as the sun sets. VFR ceilings will prevail across all sites through 06Z Friday. /CR/

PRELIMINARY POINT TEMPS/POPS

Jackson 74 95 73 93 / 10 50 40 70 Meridian 75 96 73 94 / 10 60 20 60 Vicksburg 73 94 72 92 / 10 40 40 50 Hattiesburg 74 93 73 93 / 10 90 30 80 Natchez 73 94 72 92 / 10 60 30 70 Greenville 75 97 74 97 / 10 30 20 30 Greenwood 74 97 73 96 / 10 30 10 40

JAN WATCHES/WARNINGS/ADVISORIES

MS...Heat Advisory until 7 PM CDT this evening for MSZ018-019-025>066- 072>074.

Heat Advisory from noon to 7 PM CDT Friday for MSZ018-019- 025>066-072>074.

LA...Heat Advisory until 7 PM CDT this evening for LAZ007>009-015-016- 023>026.

Heat Advisory from noon to 7 PM CDT Friday for LAZ007>009-015- 016-023>026.

AR...Heat Advisory until 7 PM CDT this evening for ARZ074-075.

Heat Advisory from noon to 7 PM CDT Friday for ARZ074-075.