textproduct: Jackson

KEY MESSAGES

- Elevated to limited heat threats will persist across much of the area this week.

DISCUSSION

Issued at 345 AM CDT Tue Sep 8 2026

A weak frontal boundary has pushed further south and west into the forecast area as of early this morning, and this will bring a corresponding shift in the dangerous heat threat alignment for today. The greater heat danger threat will be generally along/west of the I-55 corridor, and we have maintained a heat advisory with just some minor adjustments to expand it slightly eastward. In terms of convective rainfall for today, a slight mid level warming and reduced low to mid level lapse rates makes today's airmass not quite as favorable for microburst potential during the afternoon and evening.

Going through the remainder of the week through the weekend, the weather pattern will remain mostly unchanged, and this means that the semi-permanent subtropical ridge will keep temperatures above normal for the foreseeable future. It is worth noting however that a subtle weakness in the ridge is forecast to develop over the lower Mississippi Valley region during the Thursday through Saturday time frame, and while this will not do much to alleviate the heat, it should allow for greater coverage of diurnal convection. Looking ahead to next week, the bulk of global model guidance indicate the ridge will have no trouble re- intensifying to prior levels, and then some, which means we will once again be facing additional heat stress concerns. /EC/

AVIATION

(06Z TAFS) Issued at 1251 AM CDT Tue Sep 8 2026

VFR conditions will prevail through the period. Some BR will be possible across northern TAF sites between 10-15Z but probabilities were to low to include in TAFs. Isolated -TSRA may also be possible Tuesday afternoon after 20Z near southern TAF sites. Winds will become southerly by 12Z at all TAF sites./KP/

PRELIMINARY POINT TEMPS/POPS

Jackson 96 73 95 72 / 30 10 0 0 Meridian 94 72 95 72 / 10 0 0 0 Vicksburg 96 73 95 72 / 30 10 0 0 Hattiesburg 93 73 93 73 / 20 0 10 10 Natchez 96 73 94 72 / 40 10 10 0 Greenville 100 74 97 74 / 30 10 10 0 Greenwood 98 73 96 72 / 40 10 0 0

JAN WATCHES/WARNINGS/ADVISORIES

MS...Heat Advisory from 11 AM this morning to 7 PM CDT this evening for MSZ018-019-025>028-034>036-040>043-047>049-053>055- 059>063.

LA...Heat Advisory from 11 AM this morning to 7 PM CDT this evening for LAZ007>009-015-016-023>026.

AR...Heat Advisory from 11 AM this morning to 7 PM CDT this evening for ARZ074-075.