textproduct: Jackson

KEY MESSAGES

- Dangerous heat stress will persist through Thursday.

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

(00Z TAFS) Issued at 629 PM CDT Wed Jul 29 2026

Scattered SHRA and TS will be possible through the period, primarily focused around afternoon and early evening time frames. This activity could bring brief visby reductions or wind gusts at any impacted site. Patchy fog will be possible for a few hours around daybreak Thursday morning. Otherwise, VFR conditions will prevail through the TAF period. /DL/

PRELIMINARY POINT TEMPS/POPS

Jackson 75 94 74 94 / 20 50 30 60 Meridian 74 94 74 93 / 30 40 20 50 Vicksburg 76 93 75 93 / 30 50 10 50 Hattiesburg 77 94 75 92 / 20 50 40 70 Natchez 76 94 75 94 / 10 50 20 40 Greenville 75 94 74 94 / 30 30 20 40 Greenwood 74 95 73 94 / 30 20 10 60

JAN WATCHES/WARNINGS/ADVISORIES

MS...Heat Advisory until 9 PM CDT this evening for MSZ028>033-037>039- 044>046-050>052-056>058-060>066-072>074.

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

Extreme Heat Warning until 9 PM CDT this evening for MSZ018-019- 025>027-034>036-040>043-047>049-053>055-059.

LA...Heat Advisory until 9 PM CDT this evening for LAZ007>009-015-016- 023>026.

Heat Advisory from 10 AM to 7 PM CDT Thursday for LAZ007>009-015- 016-023>026.

AR...Heat Advisory until 9 PM CDT this evening for ARZ074-075.

Heat Advisory from 10 AM to 7 PM CDT Thursday for ARZ074-075.