textproduct: Jackson

KEY MESSAGES

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

- Rain chances will expand from the Gulf Coast today to include more of our forecast area by Thursday and Friday.

DISCUSSION

Issued at 113 AM CDT Tue Sep 1 2026

Tropical Storm Edouard off the central Louisiana Gulf Coast should continue west-northwest, making landfall over Texas by this evening. No impacts are expected in our forecast area. An anomalously strong upper-level ridge over the Mid-South is at nearly max strength for early September. Easterly flow around its southern perimeter will bring disturbances and rain chances along the Gulf Coast, with rain chances mainly shunted to the south of our area to our area through tomorrow. Thursday, an easterly disturbance lifting into our area will weaken the influence of the ridge and arrive with a surge of deeper tropical moisture. Rain chances will spread farther north into our area then Thursday and Friday. By the weekend into early next week, the ridge will retrograde and amplify over the High Plains and along the Rockies. Eventually this should translate to lower rain chances and strengthening heat from the ridge.

Apart from increasing rain chances later in the week, heat and humidity will still result in afternoon heat index values climbing into the 105 to 110 degree range for parts of the area. Today there's enough confidence to support a Heat Advisory across most areas except eastern Mississippi. Additional Heat Advisories may be needed throughout the week ahead. /NF/

AVIATION

(06Z TAFS) Issued at 113 AM CDT Tue Sep 1 2026

Early morning fog will be something to monitor mainly in the PIB/HBG area, but IFR/MVFR impacts would be brief if they occur. Otherwise, VFR conditions are expected to prevail through the forecast period. Scattered upper level cloud coverage will be found across southern zones, few through central, and SKC along our northern reaches. /OAJ/

PRELIMINARY POINT TEMPS/POPS

Jackson 97 74 97 74 / 0 0 10 0 Meridian 97 74 98 74 / 0 0 10 0 Vicksburg 96 74 95 74 / 0 0 10 0 Hattiesburg 95 73 96 73 / 10 0 50 10 Natchez 96 74 96 73 / 10 0 10 10 Greenville 98 76 98 76 / 0 0 0 0 Greenwood 98 75 98 74 / 0 0 0 0

JAN WATCHES/WARNINGS/ADVISORIES

MS...Heat Advisory from 11 AM this morning to 7 PM CDT this evening for MSZ018-019-025>027-034>036-040>043-047>049-053>055- 059>064-072.

LA...Heat Advisory from 11 AM this morning to 7 PM CDT this evening for LAZ007>009-015-016-023>026.

AR...Heat Advisory from 11 AM this morning to 7 PM CDT this evening for ARZ074-075.