textproduct: Jackson

KEY MESSAGES

- Heat stress will continue to be a concern over much of the area on Thursday, though drier air will bring limited relief across North Mississippi.

MESOSCALE UPDATE

Issued at 953 PM CDT Wed Jul 29 2026

A cluster of thunderstorms continues to fester along the Hwy 82 corridor between Moorhead and Winona this evening. These storms have remained below severe limits, but have dropped localized rainfall amounts of 1-3". Though coverage should generally decrease through the overnight, with the stalled front remaining across the area, we cannot rule out isolated convection persisting through the night. Patchy fog will also be possible, especially in the areas where rain is occurring this evening. Freshened up the near term forecast to account for current trends and to add patchy fog in some areas. /DL/

DISCUSSION

Issued at 329 PM CDT Wed Jul 29 2026

Through Thursday: Additional dangerous heat stress is the primary concern as we go through the remainder of the afternoon and then again Thursday, and the heat advisory has been extended in time for most of the area accordingly. A weak frontal boundary that is supporting isolated storms over mainly northern portions of the outlook area today will support renewed storm development Thursday afternoon further south, and this will help to limit the heat just a bit compared today. Storms are expected to remain below severe limits for the most part. /EC/

The long-term forecast from the end of the week into early next week remains on track:

Increased chances for convective activity and cloud coverage will take hold due to the surface confluence from the aforementioned front, which could provide a few degree dip, thus mitigating heat threat concerns. With upper flow becoming more northerly and northwesterly during this time frame, we will see the potential for one or two convective complexes moving into the area or developing over the area. This will result in higher rain chances across the area Friday heading into the weekend. This system will also lose momentum and stall over the area which will bring higher than average diurnal rain chances across the area to finish out the period. Going into early next week, we'll see rain chances diminish and heat potentially rebuild some, but not to the extent that we are currently observing. /OAJ/EC/

AVIATION

(06Z TAFS) Issued at 1240 AM CDT Thu Jul 30 2026

Local radars showed isold -SHRA that wl come in vcty of GTR before gradually dissipating. Otherwise, isold to sct -SHRA/TSRA wl develop and affect TAF sites this mainly this aftn. Away from TSRA, VFR conditions wl prevail through the TAF period. /22/

PRELIMINARY POINT TEMPS/POPS

Jackson 74 94 75 91 / 30 60 40 60 Meridian 74 93 74 89 / 20 50 40 80 Vicksburg 75 93 76 92 / 10 50 40 50 Hattiesburg 75 92 75 90 / 40 70 30 60 Natchez 75 94 75 93 / 20 40 20 30 Greenville 74 94 76 93 / 20 40 40 30 Greenwood 73 94 75 92 / 10 60 50 40

JAN WATCHES/WARNINGS/ADVISORIES

MS...Heat Advisory from 10 AM this morning to 7 PM CDT this evening for MSZ018-019-025-034>036-040>044-047>051-053>066-072>074.

LA...Heat Advisory from 10 AM this morning to 7 PM CDT this evening for LAZ007>009-015-016-023>026.

AR...Heat Advisory from 10 AM this morning to 7 PM CDT this evening for ARZ074-075.