textproduct: Jackson

KEY MESSAGES

- Dangerous levels (limited to elevated) of heat will return Thursday and persist into the weekend.

DISCUSSION

Issued at 149 PM CDT Thu Jul 9 2026

Persistent sub-tropical ridging stretching across the southwest will maintain abnormal heat and humidity through the end of the workweek, the inclusion of a heat advisory will remain in effect for Bolivar/Leflore/Sunflower/Washington through 8pm tonight. Afternoon high temperatures will remain a few degrees above climo normals, combined with hotter than normal overnight lows and high humidity, we will continue to indicate the risk for elevated (level 2/4) and limited (level 1/4) risk areas for dangerous heat stress in the GWHO into this weekend. For today and tomorrow a broad area of low-level ridging will keep this warm airmass in place, resulting in a typical pattern of diurnal isolated to scattered afternoon convection./KP/

Saturday through Wednesday:

A potent upper-lvl ridge will build and traverse over the Northern Plains, resulting in downstream troughing over the Mid-MS Valley. The trough will slowly push a frontal boundary towards the southeast through the weekend and into next week. As the boundary progress towards the area, rain chances will be likely to widespread (70-85%) with the greatest coverage on Sunday and Monday. Rain will stick around through mid- week as the boundary gradually moves over the area. With the ongoing rain potential, heat relief is expected as heat indices drop below 105 degrees. /SW/

AVIATION

(18Z TAFS) Issued at 1245 PM CDT Thu Jul 9 2026

VFR conditions will prevail through the forecast period. VCTS will be possible this afternoon, mainly at eastern TAF sites briefly reducing categories. Patchy BR/low stratus will also be possible Friday morning at sites PIB/HBG from around 12Z-15Z.Winds will increase from the southwest between 5-10 knots by late this morning, and continue as such through the afternoon hours./KP/

PRELIMINARY POINT TEMPS/POPS

Jackson 75 94 75 93 / 10 0 10 20 Meridian 74 94 75 94 / 20 10 10 40 Vicksburg 76 94 76 94 / 10 0 10 10 Hattiesburg 75 95 76 94 / 20 20 10 60 Natchez 75 95 75 94 / 0 10 10 40 Greenville 76 95 77 94 / 0 0 0 20 Greenwood 76 95 76 94 / 0 0 10 40

JAN WATCHES/WARNINGS/ADVISORIES

MS...Heat Advisory until 8 PM CDT this evening for MSZ018-019-025-034.

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