427
FXUS62 KFFC 182333
AFDFFC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
733 PM EDT TUE AUG 18 2026
..NEW 00Z AVIATION DISCUSSION
KEY MESSAGES
- DRIER AIR WILL CONTINUE FILTERING INTO GEORGIA THROUGH
TOMORROW THOUGH A HEAT ADVISORY WILL REMAIN IN EFFECT FOR MOST
OF CENTRAL GEORGIA THROUGH THIS EVENING.
- THUNDERSTORM CHANCES WILL BE LIMITED WEDNESDAY THROUGH
THURSDAY, THEN INCREASE SOMEWHAT LATE THIS WEEK INTO THE
WEEKEND.
SHORT TERM
(THIS AFTERNOON THROUGH WEDNESDAY)
ISSUED AT 200 PM EDT TUE AUG 18 2026
THE RIDGE INFLUENCING OUR HOT AND HUMID CONDITIONS HAS BEGUN TO
SHIFT WESTWARD AND HAS ALLOWED DRIER AIR TO WORK INTO OUR CWA ALONG
THE PERIPHERY OF A BROAD TROUGH ORIENTED INTO THE MIDWEST REGION.
THIS SHOULD PROVIDE US WITH A BRIEF REPRIEVE FROM THE OVERLY HUMID
AUGUST CONDITIONS WE'VE EXPERIENCED SO FAR THIS MONTH. DEW POINT
TEMPERATURES HAVE ALREADY BEGUN TO FALL INTO THE UPPER 60S OVER
NORTH GEORGIA BEHIND A SURFACE FRONT MOVING THROUGH THE ATL METRO
AREA AND WILL CONTINUE TO WORK INTO OUR CWA THROUGH THE DAY. THAT
BEING SAID, A HEAT ADVISORY HAS BEEN ISSUED FOR TODAY FOR OUR
CENTRAL TO SOUTHERN COUNTIES THROUGH THE EARLY EVENING HOURS. FOR
WEDNESDAY, OUR CWA CAN LOOK FORWARD TO A SLIGHTLY MORE COMFORTABLE
MORNING WITH TEMPERATURES STARTING IN THE MID 60S IN NORTHEAST
GEORGIA TO MID 70S FOR OUR SOUTHERN AREAS. AFTERNOON HIGHS WILL
CLIMB BACK INTO THE LOW TO MID 90S FOR MOST LOCATIONS, BUT A HEAT
ADVISORY WILL NOT BE WARRANTED FOR WEDNESDAY THANKS TO THE DRIER
CONDITIONS. PRECIPITATION CHANCES WILL BE CLOSE TO NULL THROUGH
WEDNESDAY AS OUR PATTERN BRIEFLY DRIES OUT BEFORE RAIN CHANCES TICK
BACK UP LATER IN THE WEEK.
LONG TERM
(THURSDAY MORNING THROUGH NEXT MONDAY)
ISSUED AT 200 PM EDT TUE AUG 18 2026
THE MAIN STORY FOR THE LONG TERM PERIOD WILL BE OPPRESSIVE HEAT FOR
PARTS OF THE AREA, PRIMARILY ON THURSDAY AND FRIDAY. AT THIS TIME,
HEAT INDEX VALUES ARE GENERALLY EXPECTED TO RANGE FROM 100 TO 107,
SO ADDITIONAL HEAT ADVISORIES MAY BE NEEDED FOR PARTS OF THE AREA
BOTH DAYS. ACTUAL AIR TEMPERATURES WILL RANGE FROM THE MID-90S TO
AROUND 100 DEGREES, SO CONDITIONS WILL BE DOWNRIGHT OPPRESSIVE AND
EVEN HAZARDOUS FOR VULNERABLE GROUPS (THOSE WITHOUT AIR
CONDITIONING, OUTDOOR WORKERS, BABIES, THE ELDERLY, AND THOSE WITH
CERTAIN MEDICAL CONDITIONS).
AREA-WIDE POPS RETURN ON FRIDAY AS AN AMPLIFYING RIDGE OVER THE WEST
FORCES EXPANSIVE TROUGHING OVER THE EAST. SURFACE-BASED INSTABILITY
SHOULD BE BOUNTIFUL (IT IS SUMMER IN THE SOUTHEAST, AFTER ALL) SO
BARRING SIGNIFICANT CAPPING, AT LEAST ISOLATED TO SCATTERED
CONVECTION SHOULD OCCUR ACROSS THE AREA. STRONG MID-/UPPER-LEVEL
FLOW ASSOCIATED WITH THE TROUGH LOOKS TO SUPPORT DEEP-LAYER SHEAR
PERHAPS AS FAR SOUTH AS NORTH GEORGIA. SOME OF THE LONGER-RANGE CAMS
(AVAILABLE ON THE NSSL WEBSITE) DEPICT A FEW CLUSTERS OF STORMS
DEVELOPING ACROSS THE SOUTHEAST ON THURSDAY AND FRIDAY, ALTHOUGH
THEIR PLACEMENT AND EVOLUTION VARY WIDELY AS PREDICTABILITY IS VERY
LOW. FOR WHAT IT'S WORTH, NCAR MEDIUM-RANGE AI NWP CONVECTIVE HAZARD
FORECASTS AND ML PRODUCTS HAVE SIGNALS OF SEVERE POTENTIAL. THUS, IT
WILL BE WISE TO MONITOR TRENDS IN SEVERE WEATHER PARAMETERS WITH
SUBSEQUENT MODEL RUNS, AS UPSCALE GROWTH IN CONVECTION COULD BRING
SEVERE WEATHER POTENTIAL TO NORTH AND CENTRAL GEORGIA.
NBM GUIDANCE SUGGESTS A FRONT (LARGELY A MOISTURE GRADIENT) PUSHING
THROUGH SATURDAY INTO SUNDAY. THIS FEATURE IS CURRENTLY EXPECTED TO
LOWER POPS MARKEDLY SUNDAY AND MONDAY. WHILE HEAT INDEX VALUES WILL
DECREASE BOTH DAYS, HIGH TEMPERATURES ARE LIKELY TO REMAIN IN THE
90S FOR MUCH OF THE AREA.
AVIATION
(00Z TAFS)
ISSUED AT 708 PM EDT TUE AUG 18 2026
CLEAR SKIES EXPECTED OVERNIGHT AND WED MORNING WITH SOME FEW/SCT
VFR CEILINGS EXPECTED WED AFTERNOON. WINDS WILL STAY OUT OF THE W
TO NW IN THE 4-10KT RANGE THROUGH THE PERIOD. NO PRECIPITATION OR
RESTRICTIONS TO VSBYS EXPECTED.
//ATL CONFIDENCE...00Z UPDATE...
CONFIDENCE HIGH ON ALL ELEMENTS
01
PRELIMINARY POINT TEMPS/POPS
ATHENS 71 96 72 98 / 0 0 0 10
ATLANTA 72 95 74 98 / 0 0 0 10
BLAIRSVILLE 63 88 68 89 / 0 0 0 10
CARTERSVILLE 68 94 71 96 / 0 0 0 10
COLUMBUS 75 95 74 97 / 0 0 0 20
GAINESVILLE 70 94 73 96 / 0 0 0 10
MACON 74 95 73 98 / 0 0 0 20
ROME 68 95 70 95 / 0 0 10 10
PEACHTREE CITY 70 94 72 97 / 0 0 0 10
VIDALIA 76 98 75 100 / 0 0 10 30
FFC WATCHES/WARNINGS/ADVISORIES
HEAT ADVISORY UNTIL 8 PM EDT THIS EVENING FOR GAZ072>074-076-
080>086-089>098-102>113.
SHORT TERM...82
LONG TERM....MARTIN
AVIATION...01
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