textproduct: Jackson

KEY MESSAGES

- Dangerous heat stress will remain a concern through late this week.

- Afternoon showers and thunderstorms will be possible over at least portions of the forecast area each day of the forecast period.

DISCUSSION

Issued at 339 AM CDT Sun Aug 9 2026

An anomalously strong ridge remains over the Four Corners region, but the Bermuda High is beginning to retrograde from the Atlantic to the Gulf Coast. As it treks westward this week, it will come to be the dominant feature in our synoptic pattern and become a stronger limiting factor for rain chances. High PWAT values near 2 inches will persist in the region through midweek, so increasing heat will push our daily heat index values more reliably over 105 degrees across the area tomorrow onward. Showers and thunderstorms will bring spotty relief from the heat. Drier air will wrap from the Gulf and southwestern US as the ridge becomes more prevalent, and PWAT values will fall closer to 1.5 inches by next Friday and Saturday. The increasing temps may be a little offset by the decreasing humidity, but suffice it to say that heat stress will be a concern as we push solidly into mid August. /NF/

AVIATION

(12Z TAFS) Issued at 628 AM CDT Sun Aug 9 2026

Patchy fog will be possible before 14Z, resulting in MVFR/IFR at affected sites. Flight conditions will return to VFR after 14Z once fog dissipates. VFR flight conditions with southerly winds at 5 kts will prevail through the period. Afternoon convection may result in reduction of flight condition. /SW/

PRELIMINARY POINT TEMPS/POPS

Jackson 94 74 95 74 / 40 20 30 10 Meridian 95 74 93 74 / 40 20 20 10 Vicksburg 94 74 95 74 / 20 10 20 10 Hattiesburg 97 74 95 73 / 50 20 40 0 Natchez 95 73 96 73 / 30 20 20 10 Greenville 95 75 95 75 / 30 10 10 10 Greenwood 93 74 94 75 / 30 10 20 0

JAN WATCHES/WARNINGS/ADVISORIES

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