textproduct: Jackson

KEY MESSAGES

- Heat stress will continue to be a concern over much of the area today.

DISCUSSION

Issued at 252 AM CDT Fri Jul 31 2026

Today through next Thursday...In the near-term, the concern for dangerous heat stress remains the primary story. Highs this afternoon will again hover in the mid to upper 90s. This, coupled with dew points in the mid to upper 70s, will again yield afternoon heat index values generally in the 105F-110F range. Therefore, a "Heat Advisory" will be in effect today from 10 AM - 7 PM. Better chances for convection will exist this afternoon, mainly across areas along and east of the Interstate 55 corridor.

Troughing increases across the region over the weekend. A frontal boundary will slip into the forecast area Saturday, aiding in a better development of mainly afternoon and evening showers and storms across the CWA. This, cloud cover associated with said convection, and slightly drier air filtering into the region in the front's wake, will provide some temporary relief from the oppressive heat that's gripped the region for sometime. A storm or two could become intense enough to produce gusty winds, particularly Saturday. Frequent lightning and heavy downpours can be expected with all convection.

Unfortunately, this'll be short-lived as we move into and through the new work week. High pressure aloft centered near the Four Corners region, will begin increasing its presence across the Lower Mississippi River Valley during this time. High temperatures will again begin climbing back into the mid and upper 90s areawide by mid and late week. Moisture levels will also begin creeping back up, possibly again leading to another bout of dangerous heat stress as we end the forecast period. /19/

AVIATION

(06Z TAFS) Issued at 103 AM CDT Fri Jul 31 2026

VFR conditions will prevail throughout a majority of the forecast period at all TAF sites. Around 10Z Friday morning IFR/LIFR ceilings will be possible at sites along and north of I-20 until around 16Z before lifting. SHRA/TSRA will be possible again Friday with potential maximizing during the afternoon. Winds will westerly and generally remain under 10kts./KP/

PRELIMINARY POINT TEMPS/POPS

Jackson 95 76 93 72 / 50 20 20 20 Meridian 92 74 92 73 / 80 50 30 30 Vicksburg 95 77 94 73 / 20 30 40 20 Hattiesburg 93 75 93 75 / 70 30 20 30 Natchez 96 76 95 73 / 10 10 20 30 Greenville 95 78 95 72 / 30 40 10 0 Greenwood 94 76 93 71 / 50 30 30 0

JAN WATCHES/WARNINGS/ADVISORIES

MS...Heat Advisory from 10 AM this morning to 7 PM CDT this evening for MSZ018-019-025>066-072>074.

LA...Heat Advisory from 10 AM this morning to 7 PM CDT this evening for LAZ007>009-015-016-023>026.

AR...Heat Advisory from 10 AM this morning to 7 PM CDT this evening for ARZ074-075.