textproduct: Jackson

KEY MESSAGES

- Heat stress will continue to be a concern over much of the area today and Friday.

DISCUSSION

Issued at 147 PM CDT Thu Jul 30 2026

Through Friday: Unfortunately, the relief from the dangerous heat stress has been delayed some, and a heat advisory has been extended through Friday and now includes the entire area. The oppressive heat has maintained today over most of the area as boundary layer humidity is peaking at the worst time in association with moisture pooling associated with a weak surface boundary over our area. High dewpoints combined with temperatures rising well into the 90s is sending heat index values to around 110, but will say that scattered convective precipitation will hopefully help to reduce some of the heat, or at least keeping it from reaching more dangerous levels, as we go through the remainder of the afternoon. Expect a general repeat of today's weather for Friday with fairly high coverage of diurnally driven convection, and have maintained the elevated heat threat grahic. /EC/

Saturday 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 continued higher diurnal rain chances heading into the weekend. Going into early next week, conditions become less favorable for convective coverage. In terms of sensible weather, we'll see rain chances diminish and heat potentially rebuild some, but it should remain below what we've seen over the last few days. /OAJ/EC/

AVIATION

(18Z TAFS) Issued at 1239 PM CDT Thu Jul 30 2026

VFR conditions prevail with scattered high clouds and light westerly winds. Isolated to scattered storms are expected to persist through the afternoon. As of 12:40 PM, +TSRA at MEI. VCTS is likely for roughly the southern half of the area. /SAS/

PRELIMINARY POINT TEMPS/POPS

Jackson 75 93 75 93 / 30 60 20 20 Meridian 74 91 74 91 / 30 70 40 50 Vicksburg 75 94 76 93 / 30 40 20 20 Hattiesburg 75 91 75 92 / 30 50 20 30 Natchez 75 95 75 94 / 20 10 10 10 Greenville 75 95 76 94 / 20 40 40 30 Greenwood 74 93 75 93 / 20 60 40 30

JAN WATCHES/WARNINGS/ADVISORIES

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

Heat Advisory from 10 AM to 7 PM CDT Friday for MSZ018-019- 025>066-072>074.

LA...Heat Advisory until 7 PM CDT this evening for LAZ007>009-015-016- 023>026.

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

AR...Heat Advisory until 7 PM CDT this evening for ARZ074-075.

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