ATLANTA — Friday is still a heat-and-storm day. The relief window opens behind the front.
The National Weather Service Peachtree City Area Forecast Discussion issued at 3:52 a.m. EDT Friday, Aug. 21, leads with three key messages:
- Scattered to numerous thunderstorms this afternoon may pose a damaging wind gust threat across Central Georgia, with frequent lightning and locally heavy rainfall possible.
- Conditions stay warm and humid today, but slightly cooler, more seasonal temperatures return this weekend into early next week.
- The weekend looks mostly dry, with low daily rain chances returning for most by mid-week next week.
At issuance, the product listed no watches, warnings, or advisories.
Overnight already delivered heavy rain north
The short-term section (issued 3:50 a.m. EDT) said thunderstorms were ongoing across North Georgia early Friday. Convection pulsed quickly in an untapped environment and initially carried both a severe wind threat and a flash-flood risk because storms moved slowly.
NWS highlighted Catoosa County, where northern parts of the county saw well over 3 inches in an hour, with radar estimates between Ringgold and Boynton approaching nearly 4 inches in a little over an hour. Forecasters expected early storms to gradually wane as outflow raced ahead, though a few additional severe pulses could not be ruled out for another hour or two after issuance.
Friday afternoon focus shifts south/east
With much of North Georgia “worked over,” additional development is largely expected over Central and Eastern Georgia this afternoon and evening where moisture and instability are highest. A surface front will slowly sag south; areas along and south of that boundary are the focus.
Storms there may produce severe wind gusts, matching the SPC Day 1 Marginal Risk (Level 1 of 5). By Saturday, the front should sit across the far southern counties, confining most rain/thunder chances to far south-central Georgia.
One more triple-digit heat-index day
NWS says less oppressive heat is coming — but not before one more hot, muggy day. Highs climb back into the 90s (except higher elevations). Triple-digit heat indexes are forecast for most places today, nearing heat-advisory criteria for parts of Central Georgia. An advisory was considered but held off because of the potential for higher afternoon convective coverage.
Outdoor caution language still applies for people and pets during peak heating. Drier, less humid air begins filtering in tonight into Saturday and sticks through the weekend.
Atlanta numbers in the AFD
Preliminary point guidance in the same discussion puts Atlanta near:
- Friday: high 92°F, low 72°F, daytime storm chance about 50%
- Saturday: high 92°F, low 72°F, storm chance about 20% by evening, then near 0% overnight into Sunday morning in the tabulated sequence
Other sample highs Friday: Athens 92, Macon 94, Columbus 94, Vidalia 97, Blairsville 84.
Weekend and early next week
The longer-range section describes a front pushing through Saturday, dropping dewpoints into the 50s to mid-60s by Sunday afternoon. Expect mostly fair weather, slightly cooler mornings, highs in the upper 80s to low 90s, and lower humidity through early next week. A few stray southern showers/storms remain possible Saturday afternoon; otherwise precipitation chances largely end through Monday morning before a more typical midweek diurnal-storm pattern returns.
How to use this
This is a forecast discussion, not a storm survey and not a heat-advisory declaration. Treat Friday afternoon–evening as the higher-attention window for stronger storms over central/eastern Georgia, treat triple-digit heat indexes as the outdoor-planning signal for today, and treat the weekend as the first real humidity break of the stretch.
Primary source: NWS Peachtree City Area Forecast Discussion — issued 3:52 a.m. EDT Aug. 21, 2026.