textproduct: Jackson

KEY MESSAGES

- Dangerous heat stress persists across the forecast area this week. Gradually worsening mid-week.

- Rain chances remain best south of the Interstate 20 corridor through mid-week, but expands northward by late week.

DISCUSSION

Issued at 107 PM CDT Mon Aug 31 2026

Tonight through Labor Day Weekend...Strong high pressure aloft will remain in place across the region through the forecast period. This, as high pressure at the surface likewise remains wedged into the forecast area from the east. Despite "Potential Tropical Cyclone Five" currently centered off the south central Louisiana gulf coast, this system is not forecast to affect the weather across our area as it continues to move west northwest towards the Southwest Louisiana/Southeast Texas coast over the next 36 hours.

Therefore for us through this forecast period, expect a continuation of increasingly humid conditions and hot temperatures. Moisture will subtly build across the region through the end of the week. Highs each afternoon will warm into the middle and upper 90s. This, as dew points mix each day in the low and middle 70s, will yield afternoon heat index values above the century mark in most locations. Across portions of the area during the week, indices will hover between 105- 110 degrees. This will result in a "Heat Advisory" being needed and likely adjusted across the forecast area each day as dangerous heat stress conditions are expected to impact portions of, if not all of, the CWA through the week.

Other than an isolated shower or storm being observed in the south in the vicinity of the Highway 84 corridor today through Wednesday, much of the CWA will remain dry. As better moisture works north into the CWA Thursday into the weekend, better rain chances will likewise spread northward into the CWA. This could bring some temporary relief from both the heat and dry conditions across the region, especially Friday into Labor Day Weekend. /19/

AVIATION

(18Z TAFS) Issued at 107 PM CDT Mon Aug 31 2026

VFR flight conditions will prevail through the period. Easterly winds, varying at time, around 5 kts are expected. An isolated shower near southern sites will be possible this afternoon before diminishing after sunset. /SW/

PRELIMINARY POINT TEMPS/POPS

Jackson 74 97 74 96 / 0 0 0 10 Meridian 74 97 73 96 / 0 10 0 20 Vicksburg 74 96 73 95 / 0 0 0 10 Hattiesburg 73 95 73 94 / 20 20 10 40 Natchez 74 95 73 95 / 10 10 0 20 Greenville 75 98 76 98 / 0 0 0 0 Greenwood 74 98 74 97 / 0 0 0 0

JAN WATCHES/WARNINGS/ADVISORIES

MS...Heat Advisory until 8 PM CDT this evening for MSZ018-019-025- 034>036-040>043-047-048-053-054-059.

Heat Advisory from noon to 8 PM CDT Tuesday for MSZ018-019- 025>027-034>036-040>043-047>049-053-054-059-060.

LA...Heat Advisory until 8 PM CDT this evening for LAZ007>009-015-016- 023-025.

Heat Advisory from noon to 8 PM CDT Tuesday for LAZ007>009-015- 016-023>026.

AR...Heat Advisory until 8 PM CDT this evening for ARZ074-075.

Heat Advisory from noon to 8 PM CDT Tuesday for ARZ074-075.