textproduct: Jackson

KEY MESSAGES

- Storm threats continue to be a concern with marginal (1/5) severe risks for damaging wind gusts this evening and again Sunday.

- Outside of rain-cooled areas, increased heat stress remains possible into Sunday.

MESOSCALE UPDATE

Issued at 936 PM CDT Sat Jul 4 2026

Mother nature continues to put on its own fireworks show across portions of south and west MS this evening, with a few strong storms persisting from east of Vicksburg to around McComb. Though coverage and intensity is expected to decrease over the next couple of hours, scattered showers and isolated storms will remain possible overnight within lingering weak to moderate instability. We're also monitoring upstream storms over eastern OK, whose remnant MCV and outflow could serve as a focus for redevelopment tomorrow. /DL/

DISCUSSION

Issued at 220 PM CDT Sat Jul 4 2026

A hot and humid airmass will remain over the forecast area through the remainder of the 4th of July weekend, but the heat stress event overall continues to be more marginal in nature with messaging propped up some by the holiday related outdoor activities. With that said, an increase MCV activity with greater convective influences will make heat threats a little more questionable as we go beyond today, and will continue to hold off on extending the current heat advisory. An active diurnally enhanced convective regime will support a few intense updrafts and severe microbursts just about anywhere, but the MCV activity moving in from the northwest today and again Sunday may support a more organized severe wind threat, and therefore have included severe graphics in the messaging.

Going through next week, a typical active July convective regime is expected along with seasonably hot and humid conditions as a relative weakness in the subtropical ridge axis is maintained. Additional heat related graphics for limited/elevated heat threats may eventually become necessary along with marginal severe weather risks for damaging wind gusts. /EC/

AVIATION

(00Z TAFS) Issued at 638 PM CDT Sat Jul 4 2026

Scattered to numerous SHRA/TS are expected through most of the TAF period, with generally greater coverage during the afternoon and evening hours each day. This activity could result in brief ceiling/visby reductions and wind gusts. There is a low chance for mainly MVFR fog around daybreak Sunday morning. Otherwise, VFR conditions are expected through the TAF period. /DL/

PRELIMINARY POINT TEMPS/POPS

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

JAN WATCHES/WARNINGS/ADVISORIES

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