textproduct: Jackson

KEY MESSAGES

- A dry, warm airmass remains over the region through at least midweek.

- Rain chances return by late week with widespread rains likely into the weekend.

DISCUSSION

Issued at 301 AM CDT Tue Sep 29 2026

Today and tonight...

Upper level ridging remains in control with a seasonably warm and dry airmass beneath northerly flow aloft. High temperatures this afternoon will climb into the lower 90s with deep mixing by afternoon. With ongoing drought conditions and RH values (%) in the mid-20s, a "Limited" fire danger outlook continues to be advertised over northern parts of the area. Continue to be cautious when burning outdoors and to heed any local burn bans.

Wednesday into early next week...

As the surface ridge migrates eastward through mid and late week, southerly return flow will advect deep Gulf moisture into the area which will ease fire weather concerns with increasing humidity through the weekend.

By late week, an upper low will become entangled with the remnants of Eastern Pacific Hurricane Polo and the merged system will then eject into the central parts of the country. At the same time, the subtropical ridge over the southwest Atlantic will strengthen, resulting the in the upper low struggling to penetrate into the Deep South and instead being shunted into the Midwest. While the bulk of this storm complex will miss the area to the north and west, deep moisture associated with a tropical wave that becomes entrained into the system from the Atlantic side will combine with the glancing influence of midlatitude cyclone, bringing widespread showers and thunderstorms Friday and into the weekend. Severe weather is not currently anticipated with this activity. Rainfall totals of 2-4 inches appear likely for most over the weekend, which would help improve ongoing drought conditions. As the storm complex shifts northeast and away, a trailing cold front will mark the back edge of our primary rain opportunities, moving through the area early next week. Behind the front, a substantial cooldown appears on tap; highs early next week likely fall into the lower 80s F for most with lows dipping into the upper 50s F and lower 60s F across the area. /86/SW/

AVIATION

(12Z TAFS) Issued at 636 AM CDT Tue Sep 29 2026

VFR conditions will prevail through the forecast period. /EC/

PRELIMINARY POINT TEMPS/POPS

Jackson 92 64 92 67 / 0 0 0 0 Meridian 90 61 91 65 / 0 0 0 0 Vicksburg 93 65 92 68 / 0 0 0 0 Hattiesburg 92 62 92 67 / 0 0 10 0 Natchez 94 66 93 68 / 0 0 0 0 Greenville 93 66 94 68 / 0 0 0 0 Greenwood 92 63 93 65 / 0 0 0 0

JAN WATCHES/WARNINGS/ADVISORIES

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