textproduct: Jackson

KEY MESSAGES

- Dangerous heat stress intensifies areawide this weekend through the middle of next week.

MESOSCALE UPDATE

Issued at 936 AM CDT Sat Jun 27 2026

Hot and humid conditions will prevail across our forecast area this morning thanks to the high pressure system over the southeast CONUS. Cloud cover will begin to gradually decrease from the west as we head into the afternoon. Afternoon highs will peak into the 90s across the area. This combined with dewpoints in the 70s will allow for heat indices to climb into the triple digits this afternoon. At this time, no changes have been made to the heat graphic for today and a "Limited" threat for dangerous heat stress will continued to be advertised for our whole area. /CR/

DISCUSSION

Issued at 232 AM CDT Sat Jun 27 2026

Today through next Friday...High pressure at both the surface and aloft will keep a grip on our forecast area this weekend and into next week. While this will provide some opportunity for the CWA to dry out after a pretty wet stretch of weather, it'll unfortunately bring about a pretty hot and humid stretch of weather across the region. Currently, the next best chance for rain doesn't come until Tuesday, and continuing into Friday, as disturbances caught up in easterly flow aloft affect the forecast area.

In the meantime, increasing heat stress will be the bigger story during this forecast stretch. Each afternoon, highs will warm into the low and middle 90s, except mid and upper 90s Monday and Tuesday. This, coupled with dew points in the 70s, will yield afternoon heat index values at and above the century mark throughout the forecast period. At the moment, Monday and Tuesday's heat indices look their highest as values could reach up to around 110F. However on Tuesday, and continuing through Friday, increased rain chances each afternoon during this time could have an affect on just how high heat index readings get. I'll continue to advertise these dangerous heat stress conditions in the HWO into next week. We will also evaluate on a daily basis whether or not, at a minimum, a "Heat Advisory" is needed for portions of the forecast area. /19/

AVIATION

(12Z TAFS) Issued at 608 AM CDT Sat Jun 27 2026

VFR conditions are expected to prevail at the TAF sites through the period. /NF/

PRELIMINARY POINT TEMPS/POPS

Jackson 93 75 93 75 / 0 0 0 0 Meridian 93 75 94 74 / 0 0 0 0 Vicksburg 92 75 93 75 / 0 0 0 0 Hattiesburg 95 75 96 75 / 0 0 0 0 Natchez 93 75 94 75 / 0 0 0 0 Greenville 91 76 92 76 / 0 0 0 0 Greenwood 93 76 94 75 / 0 0 0 0

JAN WATCHES/WARNINGS/ADVISORIES

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