textproduct: Jackson
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
- Dangerous heat stress will persist across portions of the forecast area into next week.
- Showers and thunderstorms over the next few days will be capable of locally heavy downpours and strong gusty winds.
DISCUSSION
Issued at 1234 AM CDT Fri Sep 4 2026
The upper-level ridge will pivot toward the High Plains today into tomorrow, but hot and humid conditions will still push heat index values into the 105-110 range across most of the area. An easterly wave bringing a renewed surge of moisture will support shower and thunderstorm development early enough in the Pine Belt of southeast Mississippi today that heat should be less of a concern there. Tomorrow looks to have a similar setup, and then the ridge and northwest flow will squeeze rain chances closer to the Gulf Coast. North of the better rain chances, daily heat index values could even approach or exceed 110 degrees. For the time being, will maintain an "Elevated" threat area for dangerous heat stress on local Hazardous Weather Outlook graphics Sunday into early next week. /NF/
AVIATION
(12Z TAFS) Issued at 611 AM CDT Fri Sep 4 2026
VFR conditions will prevail for much of the period. It is evident on satellite this morning that high clouds have already largely begun to move into the area from the southeast. Timing of sky cover was adjusted sooner. There is a medium chance (60%) for showers and thunderstorms at HBG and PIB, therefore added PROB30. Given the rainfall expected, there is good confidence in low stratus and possibly lower visibility tomorrow morning. Have kept MVFR in TAF, but IFR is possible. /SAS/
PRELIMINARY POINT TEMPS/POPS
Jackson 95 73 94 73 / 30 20 50 20 Meridian 97 73 94 73 / 20 20 50 20 Vicksburg 94 72 93 73 / 30 20 40 10 Hattiesburg 94 73 93 73 / 70 30 60 20 Natchez 93 72 92 72 / 60 30 60 20 Greenville 97 75 98 75 / 20 10 20 10 Greenwood 97 73 98 73 / 20 10 20 10
JAN WATCHES/WARNINGS/ADVISORIES
MS...Heat Advisory from 11 AM this morning to 7 PM CDT this evening for MSZ018-019-025>054-059>062.
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.
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