textproduct: Jackson

KEY MESSAGES

- Dangerous heat stress is expected across portions of the forecast area over the next several days.

- Isolated severe storms capable of damaging wind gusts are possible across mainly southern portions of the area today through Tuesday.

DISCUSSION

Issued at 1243 PM CDT Sun Aug 23 2026

This afternoon through tonight:

Hot/humid conditions will be ongoing through the afternoon. Dangerous heat conditions is expected with greatest heat stress over western/southern areas where heat indices reach 110 degrees are expected. Heat Advisory will remain in effect through 8pm. A weak, frontal boundary will provide the next storm chances along the HWY 84 corridor through the evening hours. A "Marginal" (1/5) risk for severe weather with damaging winds as the primary hazard.

Monday through Saturday:

As the boundary progress southward, a round of elevated convection will bring Monday pre-dawn rain chances to the Delta and central MS. Afternoon temps will briefly "cool" temps to the low/mid 90s with heat indices near 105. "Although temps will be in the low/mid 90s, a "Limited" (1/4) risk for heat stress is expected. An additional "Slight" (2/5) risk for severe weather is expected for Monday and "Marginal" (1/5) risk Tuesday afternoon/evening thanks to incoming weak disturbances. The risk area will gradually move northward towards the 1-20 corridor by Tuesday.

High pressure will retrograde towards the Southwest CONUS with a trough axis setting up across the Southern CONUS. As a result, northwest flow across the area will allow the disturbances to increase afternoon rain chances through the end of the week. Although rain chances will be present, heat will still be a concern through the week. Heat and humidity will be on the rebound as heat indices begin to increase to 110 degrees west of I-55. Heat headlines and advisories will likely be needed as the week progress. /SW/

AVIATION

(18Z TAFS) Issued at 1243 PM CDT Sun Aug 23 2026

VFR conditions are expected to prevail through the TAF period, however brief restrictions to visibility could occur with any showers or storms near KGLH, KGWO after 12Z Monday. Confidence in thunder impacts was greatest to mention at those sites. /NF/

PRELIMINARY POINT TEMPS/POPS

Jackson 73 92 73 95 / 0 30 30 30 Meridian 73 92 72 94 / 10 40 20 40 Vicksburg 74 92 73 95 / 0 30 20 20 Hattiesburg 74 95 73 95 / 10 60 20 40 Natchez 75 96 75 97 / 10 20 10 10 Greenville 73 91 72 97 / 10 30 40 20 Greenwood 72 89 71 94 / 10 30 40 40

JAN WATCHES/WARNINGS/ADVISORIES

MS...Heat Advisory until 8 PM CDT this evening for MSZ018-019-025- 034>036-040>043-047>049-053>066-072>074.

LA...Heat Advisory until 8 PM CDT this evening for LAZ007>009-015-016- 023>026.

AR...Heat Advisory until 8 PM CDT this evening for ARZ074-075.