textproduct: NWS Birmingham

KEY MESSAGES

Issued at 108 AM CDT TUE AUG 4 2026

- Humidity will push heat indices into the 95-100 degree range mid-week, creating a moderate heat risk across Central Alabama.

- Isolated to scattered showers and a few thunderstorms are expected Tuesday and Wednesday; activity will become more diurnally driven by the weekend.

DISCUSSION

(Tuesday through next Monday) Issued at 1117 PM CDT MON AUG 3 2026

High confidence exists in the upper-level pattern transition by Thursday, as the low lifts northeast and allows heights to build. The upper low over northern Georgia is beginning to get separated from the main trough as it lifts off to the northeast. Moisture wrapping around the low will maintain a 30-50% chance of showers and a few thunderstorms through Wednesday. By Thursday, the low will begin to drift north, eventually being absorbed by another approaching upper level trough moving across the Ohio Valley. A more typical summertime pattern sets up the weekend with weak flow aloft, leading to diurnally driven showers and thunderstorms into early next week.

By Wednesday, we start to warm back up with highs rebounding into the low to mid 90s. Humid conditions will keep max heat indices in the 95-100 degree range which will pose a moderate heat risk for much of Central Alabama.

Localized visibility reductions to 1-3 miles are possible early Wednesday morning, particularly in areas that received rainfall. These visibility issues are expected to be brief and should have minimal to no impact on morning surface travel.

16

AVIATION

(06Z TAFS) Issued at 108 AM CDT TUE AUG 4 2026

Light winds overnight will offer the chance for fog development before sunrise this morning for a few locations that received rain today, along with some river basins and valleys across eastern/northeastern Alabama. There's a chance for some brief IFR/MVFR ceilings at most terminals, with lingering MVFR ceilings potentially lasting as late as 17z. VFR conditions return through the afternoon and will last through the forecast period. Winds will be calm or variable overnight, becoming WNW 5-10 knots this afternoon.

Note: AMD NOT SKED for KAUO due to a weather observation outage.

56/GDG

FIRE WEATHER

MinRH values are expected to stay above 45 percent through Wednesday with high confidence. While easterly flow will introduce drier air on Thursday and Friday, pushing humidity levels down toward 40 percent, light winds will continue to preclude any notable fire weather issues.

PRELIMINARY POINT TEMPS/POPS

Gadsden 89 69 90 70 / 60 20 70 10 Anniston 88 70 88 71 / 60 30 70 10 Birmingham 88 71 89 72 / 50 20 50 10 Tuscaloosa 90 72 92 73 / 10 10 10 0 Calera 89 71 90 72 / 40 20 40 0 Auburn 85 72 87 73 / 50 20 60 10 Montgomery 91 72 93 73 / 20 10 30 0 Troy 89 70 91 71 / 20 10 30 10

BMX WATCHES/WARNINGS/ADVISORIES

None.