textproduct: Jackson

KEY MESSAGES

- Dangerous heat stress conditions will continue this weekend and worsen early next week.

DISCUSSION

Issued at 341 AM CDT Fri Jul 24 2026

H-O-T. A strong, zonally oriented upper-level ridge along the US South features 500mb heights to near 600 dam, especially pronounced from the Desert Southwest and east along the Gulf Coast. Heights over our region are near seasonal maximum values, which supports the continued surface temps in the mid 90s. A frontal boundary retreats northward today as low-level flow has turned out of the southwest. With dew points in the low to mid 70s still, western 2/3rds of our forecast area will see heat index values top out around 105 degrees again.

As the ridge comes to amplify over western/central CONUS this weekend, troughing will deepen along the East Coast, and flow aloft will turn more sharply out of the northwest. Rain chances through the next few days, will be primarily confined to northeast or eastern most portions of our area. Rain chances next week are limited by the ridge aloft, but a wave may pass through the area mid week and trigger some shower and thunderstorm activity.

The main threat will be heat amplifying beneath the ridge. Today and tomorrow's "Limited" heat stress with 105 heat index values will yield to "Significant" heat stress with actual air temperatures in the upper 90s to near 100 degrees Monday through Thursday with peak heat index values across the board in the 110 to 115 range. As always, at this time of year, please make sure loved ones, neighbors, and pets have a cool place to spend the hot afternoons and warm nights. /NF/

AVIATION

(12Z TAFS) Issued at 625 AM CDT Fri Jul 24 2026

A mixture of VFR/MVFR/IFR ceilings will occur across several TAF sites to start off the period, with PIB,HBG, and GLH currently showing LIFR ceilings as of . Most TAF sites will see poor flying conditions through 15Z. Ceilings will begin to gradually improve to VFR across all sites shortly after 15Z. VFR ceilings will prevail across all sites after 16Z and will continue to prevail through the period. Isolated to scattered SHRA and TSRA will be possible after 19Z at GWO, GTR and MEI that could result in lower flight restrictions. VFR conditions will prevail across the area through Friday night and into early Saturday morning. /CR/

PRELIMINARY POINT TEMPS/POPS

Jackson 94 75 94 75 / 0 0 0 0 Meridian 94 75 94 75 / 10 10 10 10 Vicksburg 94 76 94 76 / 0 0 0 0 Hattiesburg 96 75 97 76 / 0 10 0 0 Natchez 96 75 96 74 / 0 0 0 0 Greenville 94 76 95 76 / 10 0 10 0 Greenwood 94 75 94 75 / 10 10 30 10

JAN WATCHES/WARNINGS/ADVISORIES

MS...None. LA...None. AR...None.