Duluth, Georgia 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

508
FXUS62 KFFC 241040
AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
640 AM EDT Tue Jun 24 2025

...New 12Z Aviation Discussion...

.SHORT TERM...
(Today through Wednesday)
Issued at 258 AM EDT Tue Jun 24 2025

Key Messages:

    - A Heat Advisory is in effect from 1 PM today through 8 PM
      Wednesday for areas outside of the northeast Georgia
      mountains.

    - Scattered thunderstorms will return Wednesday afternoon and
      evening. Some storms could become severe with a primary
      risk for strong wind gusts.

The upper ridge centered over the eastern US will reach its apex
today, bringing the hottest conditions of the week. The strength of
the ridge should put a lid on convection today with any rogue shower
being limited to the northeast Georgia mountains. Highs will soar
into the upper 90s to near 100 for most locations outside of the
mountains. These forecast highs will be within a degree or two of
the daily records at Atlanta (99 from 1988/1930) and Macon (101 from
1988/1930), though likely several degrees short for Athens and
Columbus. Regardless of any records, dewpoints will remain the upper
60s to low 70s in the afternoon, bringing peak Heat Index values
between 100-108 degrees. A Heat Advisory covers the entire area
outside of the mountain counties from 1 PM today through 8 PM
Wednesday to account for these very hot conditions. Overnight
temperatures tonight into Wednesday morning will then only dip into
the mid to even upper 70s.

On Wednesday, the ridge will begin its initial weakening as an upper
low over the west Atlantic slips westward around the ridge`s
southern periphery. This will work to both supply additional
moisture beneath the ridge as well as enhance lapse rates. Thus,
while temperatures will still soar well into the mid to upper 90s,
coverage of scattered showers and thunderstorms will also be on the
increase Wednesday afternoon and evening. Given impressive
instability (MLCAPE on the order of 2500-3500+ J/kg by afternoon)
and steep midlevel lapse rates over 7 C/km across the area, some
severe thunderstorms are certainly feasible. Damaging downburst
winds will be the primary concern with a couple instances of hail
also possible. These storms will likely persist into the late
evening before gradually diminishing Wednesday night.

As mentioned above, before any scattered thunderstorms fire
Wednesday afternoon, hot temperatures amid continued the continued
humid environment will bring heat index values again in the 100-108
degree range for most areas outside of the mountains. The Heat
Advisory will carry on through 8 PM Wednesday for these excessive
heat concerns.

RW

&&

.LONG TERM...
(Wednesday night through Monday)
Issued at 258 AM EDT Tue Jun 24 2025

Key Messages:

 - Scattered afternoon and evening thunderstorms will be a fixture
of the forecast between Thursday and early next week.

 - Temperatures will be near or slightly above seasonal averages
this weekend.

Typical Summer Weather Returns:

The upper level ridge and associated heat wave in the Eastern U.S.
will fade away during the second half of this week. In its place a
more standard summer time weather pattern will develop, with the
subtropical high over the Atlantic gradually funneling moisture into
the Southeast. The signal for this pattern shift is evident in both
the GEFS and EPS guidance. In Georgia we can expect scattered
afternoon and evening thunderstorm activity to occur each day. The
typical summer time lack of shear should prevent severe weather from
being a widespread concern, but a couple of stronger storms with
localized downburst winds could occur each day between Thursday and
Tuesday. Temperatures should be near to slightly above seasonal
averages. Overnight lows in the low 70s and afternoon highs near 90
degrees are anticipated.

Albright

&&

.AVIATION...
(12Z TAFS)
Issued at 630 AM EDT Tue Jun 24 2025

VFR conditions will prevail through the TAF period with afternoon
cu between 5-7 kft. Winds will be light and initially primarily NW
to NNW this morning before trending toward NE by 18Z. Speeds will
be light, largely 5 kts or less.


//ATL Confidence...12Z Update...
High confidence.

RW

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          99  75  97  72 /   0   0  30  30
Atlanta         98  77  96  74 /   0   0  30  30
Blairsville     93  68  91  66 /  10  10  40  30
Cartersville    97  73  97  72 /   0   0  20  20
Columbus        98  77  98  74 /   0  10  30  30
Gainesville     97  75  95  72 /   0  10  30  30
Macon           99  77  98  73 /   0   0  30  30
Rome            97  73  95  72 /   0  10  20  20
Peachtree City  98  74  97  71 /   0   0  30  30
Vidalia         98  76  97  73 /  10  10  20  30

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
Heat Advisory from 1 PM this afternoon to 8 PM EDT Wednesday for
GAZ001>005-007-011>014-019>025-027-030>039-041>062-066>076-
078>086-089>098-102>113.

&&

$$

SHORT TERM...RW
LONG TERM....Albright
AVIATION...RW