textproduct: Jackson

KEY MESSAGES

- Heat stress will continue to be a concern over much of the area today and Friday, although drier air will bring limited relief across northeast Mississippi today.

DISCUSSION

Issued at 307 AM CDT Thu Jul 30 2026

Through tonight: Early morning surface analysis had a weak nearly stationary cold front from northern Bolivar county to southern Lowndes county. Local radars showed the last of a few showers associated with the cold front shifting into western Alabama. The weak cold front will remain the focus for additional convection through tonight but, primarily this afternoon during peak heating. The cold front is expected to drift farther south through our CWA and become nearly diffuse tonight. A surface high was noted centered to our north and to our south with the frontal boundary in between. Early morning satellite imagery/RAP analysis still showed our CWA locked between a large mid level ridge to our west and a trough to our east. These features won't change much through tonight. So, the focus for today will again be the heat and humidity. Thanks to the presence of the cold front our northeast will see a little reprieve from the oppressive heat but the remainder of the CWA peak heat index values will be between 105F and 110F again. A Heat Advisory remains in effect from 10am-7pm for this area. /22/

Friday Onwards...

The long-term forecast 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 diurnal rain chances across the area Friday heading into the weekend. Going into early next week, and conditions become less favorable we'll see rain chances diminish and heat potentially rebuild some, but remain below what we've seen over the last few days./OAJ/

AVIATION

(12Z TAFS) Issued at 630 AM CDT Thu Jul 30 2026

GWO was observing LIFR conditions at 1130Z but wl improve to VFR by 14Z. 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 95 75 93 75 / 50 20 70 40 Meridian 95 74 93 74 / 60 40 80 50 Vicksburg 94 75 94 76 / 60 30 60 30 Hattiesburg 96 75 93 75 / 50 30 80 30 Natchez 95 75 95 75 / 40 20 30 10 Greenville 94 75 95 77 / 30 10 50 40 Greenwood 95 75 94 75 / 20 10 70 50

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.