textproduct: Jackson
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
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
(12Z TAFS) Issued at 617 AM CDT Thu Sep 3 2026
VFR prevails. Scattered high clouds will gradually build in later this morning. Chances for thunderstorms will be mainly along and north of I-20 broadly speaking, so included PROB30 at these sites. Any storms across the area will diminish around 0z as the sun sets. /SAS/
PRELIMINARY POINT TEMPS/POPS
Jackson 96 74 95 73 / 50 10 50 40 Meridian 97 75 96 73 / 20 10 60 20 Vicksburg 95 73 94 72 / 20 10 40 40 Hattiesburg 95 74 93 73 / 60 10 90 30 Natchez 95 73 94 72 / 20 10 60 30 Greenville 97 75 97 74 / 20 10 30 20 Greenwood 97 74 97 73 / 40 10 30 10
JAN WATCHES/WARNINGS/ADVISORIES
MS...Heat Advisory from noon today to 7 PM CDT this evening for MSZ018-019-025>066-072>074.
LA...Heat Advisory from noon today to 7 PM CDT this evening for LAZ007>009-015-016-023>026.
AR...Heat Advisory from noon today to 7 PM CDT this evening for ARZ074-075.
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