textproduct: Jackson

KEY MESSAGES

- Dangerous levels of heat stress will continue for the remainder of the week into the weekend.

DISCUSSION

Issued at 147 PM CDT Thu Jul 2 2026

Through Tonight: Heat and humidity will remain the main concern today over the whole CWA but, there exists the low chance for isolated severe storms capable of damaging wind gusts mainly in the northeast through this afternoon.

Satellite imagery/RAP analysis showed the circulation around a large 596dam high centered of the Tennessee and Ohio valleys. Beneath this high latest surface analysis had an 1018mb high. These features will strengthen slightly through the period and result in hot temperatures across our region along with high humidity as PWATs remain 1.75-2.0 inches along with surface dewpoints in the mid to upper 70s. As temperatures climb up into the 90s this afternoon, heat index values with reach and exceed 105F. The most oppressive conditions are expected along the Highway 82 corridor where a Heat Advisory remains in effect. Daytime heating of our moist airmass will lead to low chances of isolated showers and thunderstorms. Although strong storms will be possible across the whole CWA, the greatest parameters favorable for isolated severe storms capable of damaging wind gusts will exist in our northeast during the afternoon. A storm or two may linger into the evening but much of the convection will dissipate by sunset. High temperatures this afternoon as well as low temperatures tonight will continue above normal. /22/

Friday through next Thursday:

Persistent hot conditions are expected heading into the 4th of July weekend. High pressure will slightly weaken and continue northeastward, keeping afternoon rain chances and dangerous heat over the area. The heat advisory will remain in place for areas north of HWY 82 on Friday. Extension of heat products into the holiday weekend will be evaluated on a day to day basis as heat indices range from 105-110 degrees. Diurnally driven showers/storms will be possible for the 4th (25-45%) and on Sunday (35-70%). Summertime pattern will persist into next week as the airmass remain unchanged. Heat graphics and produces may be needed as the high is expected to restrengthen over the week. /SW/

AVIATION

(06Z TAFS) Issued at 1246 AM CDT Fri Jul 3 2026

Ocsnl IFR/LIFR vsbys wl remain possible across the northern TAF sites through 13Z. Isolated TSRA wl come in vcty of GTR-GWO this aftn. Otherwise, VFR conditions and a light and mostly variable wind will prevail through the TAF period. /22/

PRELIMINARY POINT TEMPS/POPS

Jackson 75 93 75 92 / 0 20 20 60 Meridian 75 95 75 94 / 0 30 10 40 Vicksburg 77 93 76 93 / 0 20 10 50 Hattiesburg 75 95 75 94 / 10 30 20 50 Natchez 76 94 75 93 / 0 30 10 70 Greenville 77 94 76 93 / 0 20 10 30 Greenwood 76 96 75 95 / 10 30 10 40

JAN WATCHES/WARNINGS/ADVISORIES

MS...Heat Advisory until 8 PM CDT this evening for MSZ018-019-025>039.

LA...None. AR...Heat Advisory until 8 PM CDT this evening for ARZ074-075.