textproduct: Jackson

KEY MESSAGES

- Dangerous heat stress today will intensify across the area into this weekend through mid next week, with heat index values likely exceeding 105F degrees and eventually around 110F degrees.

DISCUSSION

Issued at 1241 PM CDT Fri Jun 26 2026

Through next Thursday...

Mean ridging at the surface and aloft will build in this weekend, keeping the dry weather pattern as the norm. Deepening ridge (594 to 596DM) and warm advection will drive summertime warmth and humidity back into the region. Highs will moderate (3F to 5F above this weekend and 4F to 8F above next week), generally low to mid 90s this weekend (90F to 95F) and mid to possibly upper 90s next Monday through next Tuesday (92F to 96F). With some drier air aloft through this period, some mixing could develop, with evapotranspiration likely remaining still tough with lingering very wet soils and resultant moist boundary/skin layer. Even if high temps struggle to peak much into the upper 90s (96F to 98F), afternoon dangerous heat and humidity remain a concern. Onset of the worst heat will be into next week as heat indices reach near or in excess of 105F degrees areawide to possibly exceeding 110F degrees at times. Inherited HWO graphics for areawide heat stress concerns remains valid and heat headlines will likely be needed during this stretch of dangerous heat. Lows remain seasonably warm during this time (low to mid 70s).

Next best chances of rain (25 to 65 percent) will not be until early to mid next week (next Tuesday through Thursday) as series of easterly shortwaves (strongest around Thursday) slide under the southern periphery of the ridge aloft to the northeast over the Appalachians. Highest coverage will be in central to southern areas, generally south of Interstate 20 into the Highway 84 corridor, with some isolated to scattered coverage up into the Highway 82 corridor. Some stronger storms cannot be ruled out during this time as seasonably warm highs into the mid to upper 90s, increased heat and humidity and light southeasterly flow (15 to 25kts) could lead to some scattered organized convection at times. The increased rain coverage will provide some relief from the heat and humidity, with highs a little more seasonable into the low 90s. /DC/

AVIATION

(00Z TAFS) Issued at 657 PM CDT Fri Jun 26 2026

VFR conditions wl prevail through the TAF period. A gusty sw wind 18-20kts wl develop at GLH and GWO again by 16Z Sat and continue through the afternoon. /22/

PRELIMINARY POINT TEMPS/POPS

Jackson 75 92 75 93 / 0 0 0 0 Meridian 75 93 75 94 / 0 0 0 0 Vicksburg 76 92 75 92 / 0 0 0 0 Hattiesburg 75 95 75 96 / 0 10 0 0 Natchez 75 93 75 94 / 0 0 0 0 Greenville 77 91 76 92 / 0 0 0 0 Greenwood 77 93 76 94 / 0 0 0 0

JAN WATCHES/WARNINGS/ADVISORIES

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