textproduct: Jackson

KEY MESSAGES

- Dangerous heat stress conditions will continue into this weekend.

DISCUSSION

Issued at 150 PM CDT Thu Jul 23 2026

Tropical storm Bertha will continue to track westward along the Gulf Coast towards the Texas coast. This will allow for an increase in convection across the area, mainly along a corridor of enhanced CAPE,PWAT and dewpoint values as the southwesterly flow brings deeper moisture into the CWA around the Tropical Storm. Isolated to scattered convection will be possible through this evening, with a few stronger storms not entirely out of the question. Increasing cloud cover and convection will help limit the dangerous, keeping heat index values below product criteria. That said, heat indices will peak our around 105 for most of the area, with portions along the Mississippi River Valley potentially reaching slightly higher values nearing 108 degrees..

Dangerous heat stress conditions will persist through the rest of this week and into the weekend with heat values remaining around 105 to 110 degrees through Sunday. Expanding influence from the ridge aloft will likely push us back into Elevated and Significant heat stress by early next week and into the mid week. Additional heat headlines and advisories/warnings are likely to be needed as we get closer. Heat trends will continued to be monitored. Rain chances will begin to increase by next Thursday. /KP/CR/

AVIATION

(18Z TAFS) Issued at 1219 PM CDT Thu Jul 23 2026

Due to scattered to broken low clouds and now developing convection across the region, flight categories will continue to range from VFR/MVFR at area TAF sites this afternoon and early evening. Convection will begin dissipating after sunset. However, low stratus developing around day break will again yield a 1-3 hour period of MVFR/IFR categories where observed. Winds today will be from the southeast between 5-10 knots, with a few higher gusts at times. Winds will subside to light from the south around 3 knots to calm this evening and overnight. /19/

PRELIMINARY POINT TEMPS/POPS

Jackson 75 94 75 95 / 10 10 0 0 Meridian 75 95 75 95 / 10 10 10 10 Vicksburg 76 94 76 95 / 10 10 0 0 Hattiesburg 75 97 75 97 / 10 0 0 10 Natchez 74 95 74 96 / 10 0 0 0 Greenville 75 93 76 94 / 20 20 10 10 Greenwood 75 93 75 94 / 40 20 10 20

JAN WATCHES/WARNINGS/ADVISORIES

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