863
FXUS62 KFFC 210510
AFDFFC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
110 AM EDT FRI AUG 21 2026
..NEW 06Z AVIATION DISCUSSION
KEY MESSAGES
- SCATTERED STORMS WILL BE POSSIBLE DURING THE AFTERNOON AND
EVENING TODAY AND FRIDAY. SOME STORMS COULD BE SEVERE WITH
DAMAGING WINDS, FREQUENT LIGHTNING, AND LOCALLY HEAVY RAINFALL.
- WARM AND HUMID CONDITIONS THROUGH FRIDAY, WITH HEAT INDEX
VALUES CLIMBING BACK INTO THE TRIPLE DIGITS EACH AFTERNOON.
- DRY AND RELATIVELY COOLER CONDITIONS MOVE IN OVER THE WEEKEND
INTO EARLY NEXT WEEK.
SHORT TERM
(THIS AFTERNOON THROUGH FRIDAY)
ISSUED AT 151 PM EDT THU AUG 20 2026
SEVERE THUNDERSTORM POTENTIAL:
STARTING OUT WITH RELATIVELY BENIGN WEATHER EARLY THIS AFTERNOON
UNDER MOSTLY CLEAR SKIES AND LIGHT WINDS, COURTESY OF SOME REMNANT
DRY AIR IN THE LOW TO MID-LEVELS. DESPITE THIS DRIER AIR, WE
COULD STILL SEE A POP-UP SHOWERS AND STORMS THROUGH THE EARLY
EVENING HOURS AS DIURNAL HEATING PEAKS AND SOME MOISTURE STARTS
SPREADING OVER THE AREA. BY AROUND SUNSET, A FRONTAL BOUNDARY AND
MID-LEVEL SHORTWAVE WILL BE DROPPING ACROSS THE TN VALLEY,
SPARKING OFF A LINE OF STRONG TO SEVERE STORMS IN A MOIST AND
UNSTABLE ENVIRONMENT. GUIDANCE CONTINUES TO SHOW THIS LINE
PUSHING INTO FAR NW GA AROUND 8PM, THEN GRADUALLY FALLING APART AS
IT MOVES SOUTHEAST ACROSS NORTH GA AND INTO CENTRAL GA THROUGH
AROUND 12-2AM. THE PRIMARY THREAT WITH THIS LINE OF STORMS WOULD
BE DAMAGING WIND GUSTS, IN ADDITION TO FREQUENT LIGHTNING AND
LOCALLY HEAVY RAINFALL.
ON FRIDAY, THE AREA OF HIGHEST MOISTURE AND INSTABILITY OUT AHEAD
OF THE FRONTAL BOUNDARY WILL SLIDE SOUTH ACROSS OUR AREA,
GENERALLY ALONG AND SOUTH OF THE I-85 CORRIDOR. WITH THIS, WE CAN
EXPECT NUMEROUS SHOWERS AND STORMS DEVELOPING DURING THE AFTERNOON
AND EVENING ACROSS THAT CORRIDOR, WITH DRIER AIR AND LOW RAIN
CHANCES TO THE NORTH. A FEW STORMS MAY BE STRONG TO SEVERE ACROSS
CENTRAL GA, WITH DAMAGING WINDS AS THE PRIMARY THREAT, IN ADDITION
TO FREQUENT LIGHTNING AND LOCALLY HEAVY RAINFALL.
HEAT CONCERNS:
A WARM AND HUMID AIRMASS SPREADING BACK ACROSS THE AREA TODAY WILL
ALLOW HIGH TEMPERATURES TO SURGE INTO THE MID TO UPPER 90S, WITH
HEAT INDEX VALUES IN THE TRIPLE DIGITS THROUGH THE EARLY EVENING.
THESE HEAT CONCERNS WILL RETURN FRIDAY AFTERNOON AND EVENING, WITH
NEAR HEAT ADVISORY CONDITIONS ACROSS CENTRAL GA. PLEASE REMEMBER
TO USE SOME CAUTION IF YOU ARE OUTDOORS EXERTING YOURSELF,
ESPECIALLY DURING PEAK AFTERNOON HEATING. THANKFULLY, A DRIER AND
RELATIVELY COOLER AIRMASS WILL START TO SPREAD ACROSS THE AREA
BEHIND A FRONTAL BOUNDARY FRIDAY NIGHT.
LONG TERM
(SATURDAY MORNING THROUGH NEXT WEDNESDAY)
ISSUED AT 151 PM EDT THU AUG 20 2026
AS THE WEEKEND ROLLS AROUND AND THE FRONT CLEARS OUT. WE SHOULD
BE LEFT WITH A FEW DAYS OF VERY PLEASANT WEATHER. TEMPS WILL
REMAIN IN THE UPPER 80S AND 90S UNTIL WEDNESDAY, BUT RH VALUES IN
THE AFTERNOON WILL DROP INTO THE MID TO LOW 40S BRINGING HEAT
INDEX VALUES DOWN AND MAKING IT FEEL VERY DRY FOR THIS TIME OF
YEAR.
WITH THIS DRY AIRMASS BEHIND THE FRONT, WE'LL ALSO GET A BREAK
FROM THUNDERSTORMS DURING THE AFTERNOON AS WELL UNTIL WEDNESDAY
WHEN WINDS BECOME MORE SOUTHERLY AND WE START TO PULL MOISTURE
BACK IN FROM THE GULF. THIS WEEKEND AND EARLY NEXT WEEK WILL BE A
GREAT OPPORTUNITY TO BE OUTSIDE WITHOUT HATING IT.
AFTER WEDNESDAY, THE UPPER LEVEL FLOW BECOMES MORE ZONAL AND
WE'LL START TO SEE A RETURN TO THE DIURNAL PATTERN THAT WE ARE
USED TO. WITH THAT PATTERN, WE ARE ALSO EXPECTING A SLOW RETURN OF
TRIPLE DIGIT HEAT INDICES FOR THE SECOND HALF OF THE WORK WEEK.
AVIATION
(06Z TAFS)
ISSUED AT 104 AM EDT FRI AUG 21 2026
MOSTLY VFR THROUGH THE PERIOD. A SEMI-ORGANIZED LINE OF TSRA HAS
NOW FORMED AND IS MOVING ESE INTO NORTH GEORGIA. MAINTAIN TSRA
WORDING IN THE NORTHERN TERMINAL TAFS WITH TIMING ROUGHLY 08-12Z.
CONFIDENCE IS STILL LOW GIVE SLOW MOVEMENT AND CURRENT TRAJECTORY.
THERE IS STILL A NON- ZERO CHANCE TSRA FALLS APART OR TRACKS JUST
TO THE NORTH OF ATL. BUT WE COULD STILL SEE STRONG VRB WINDS UP
TO 35-40KTS WITH THE GF. CU FIELD OF 3-5KFT WILL DEVELOP IN THE AM
WITH ADDITIONAL CHANCES FOR TSRA AS EARLY AS 17-19Z. LARGELY VRB
WIND THROUGH THE NIGHT OUTSIDE OF TSRA, BUT FAVORING W SIDE LESS
THAN 10KTS AFTER 15Z.
//ATL CONFIDENCE...06Z UPDATE...
LOW CONFIDENCE ON OVERNIGHT TSRA FORECAST.
HIGH CONFIDENCE ON REMAINING ELEMENTS.
07
PRELIMINARY POINT TEMPS/POPS
ATHENS 70 92 69 92 / 50 10 0 0
ATLANTA 72 92 71 92 / 20 0 0 0
BLAIRSVILLE 64 85 63 84 / 10 0 0 0
CARTERSVILLE 70 93 69 92 / 10 0 0 0
COLUMBUS 73 94 71 95 / 40 10 0 0
GAINESVILLE 70 91 69 90 / 20 0 0 0
MACON 72 93 70 94 / 60 10 0 0
ROME 69 93 68 91 / 0 0 0 0
PEACHTREE CITY 70 92 69 92 / 30 0 0 0
VIDALIA 72 93 72 96 / 70 30 0 0
FFC WATCHES/WARNINGS/ADVISORIES
NONE.
SHORT TERM...CULVER
LONG TERM....VAUGHN
AVIATION...07
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