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 may return across the forecast area early to late next week.
- Rain chances are expected along/south of I-20 as multiple disturbances affect the area through the period.
DISCUSSION
Issued at 308 AM CDT Sun Aug 30 2026
Today...
The forecast continues to be on track with little change:
An upper-lvl high over the Southwest & Texas continues to expand towards the Southeast. As the high progresses, heat indices are expected to hit triple digits this afternoon, with increased humidity. A cut-off low will track westwards, bringing PoPs of 40- 15% to our southeastern sites. This corridor of moisture/precipitation will make its way northwards mid-week, which will be elucidated on below.
This Week...
The aforementioned high will settle over the Southeast CONUS around Tuesday, lingering through the rest of the week. Dangerous heat concerns are expected to return as highs range in the mid/upper 90s and heat indices reach 105-110F. As such, a limited heat graphic will be messaged today. As the high settles, additional cut-off low disturbances will traverse around the ridge, bringing deep moisture and storm chances (25-50%) starting along the HWY 84 corridor. Mid- week, rain chances will expand to the I-20 corridor and eastern MS as the pattern lingers and wavers northward into the end of the week.
AVIATION
(12Z TAFS) Issued at 549 AM CDT Sun Aug 30 2026
VFR prevails throughout the period once again today. Mostly clear skies with a few cirrus over most of area, with the west generally remaining clear. There is a small chance for thin shallow mist development over some central/southern sites this morning, which will burn off an hour or two after sunrise. This will not effect flight conditions, which will stay VFR. /OAJ/
PRELIMINARY POINT TEMPS/POPS
Jackson 95 73 96 73 / 10 0 10 0 Meridian 94 73 96 73 / 10 0 10 10 Vicksburg 95 73 95 73 / 0 0 10 0 Hattiesburg 94 73 94 73 / 30 10 40 10 Natchez 95 73 94 73 / 10 0 30 10 Greenville 97 75 98 75 / 0 0 0 0 Greenwood 96 74 97 73 / 0 0 0 0
JAN WATCHES/WARNINGS/ADVISORIES
MS...None. LA...None. AR...None.
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