Alpharetta, Georgia 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

334
FXUS62 KFFC 130551
AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
151 AM EDT Fri Jun 13 2025

...New 06Z Aviation Discussion...

.SHORT TERM...
(This afternoon through Friday)
Issued at 245 PM EDT Thu Jun 12 2025

Vertically stacked southwest flow continues to push abundant
moisture into the region with PWATS this morning of 1.87" and model
guidance indicating values upwards of 2" through the next 5-days. The
stalling cut off low over the western gulf the TX/LA coast will
continue to provide broad and weak lift across the southeast.
Combining the moisture, warm June temperatures, and lift means
thunderstorms chances nearly every day, peaking in the afternoon
each day. Storms will likely be scattered in nature, however most
people will likely see at least a sprinkle.

CAPE values each afternoon are likely to exceed 1000-1500 J/Kg.
DCAPE values this morning were already over 400 J/Kg suggesting
afternoon values each afternoon could easily exceed 900 J/Kg. This
would allow storms to develop brief, but strong, gusty winds.
Otherwise the main hazards will be frequent lightning and locally
heavy rainfall. So whether your favorite outdoor activities are
Georgia classics like floating down the river, participating in
outdoor sports, or getting bit by mosquitos make sure to be weather
aware.

SM

&&

.LONG TERM...
(Saturday morning through next Wednesday)
Issued at 245 PM EDT Thu Jun 12 2025

As the long term period begins on Saturday, a 500 mb trough will
extend from the Midwest towards the Lower Mississippi River Valley,
which will keep Georgia underneath southwesterly flow aloft as it
slowly advances eastward. Continued advection of warm and moist air
from the Gulf will keep dewpoints in the low to mid 70s and
precipitable water values between 1.75 and 2 inches during the
weekend and through the early parts of next week. Chances for
showers and thunderstorms will be higher than normal each day given
this ample moisture. Convective activity will be largely diurnally
driven, with low PoPs through much of the mornings, increasing
through the early afternoons, and peaking between 60-80% in the mid
to late afternoon hours each day. The southern end of the shortwave
advancing through the Tennessee Valley region on Sunday afternoon is
expected to contribute to locally higher chances still across the
far northern tier. While organized severe weather is not expected, a
few storms each day could become strong and capable of producing
frequent lightning and gusty winds. Furthermore, with high PWATs,
these storms will be efficient rainfall producers, which could lead
to isolated flooding concerns. Patchy fog will be possible during
the overnight and early morning hours, particularly where soils are
saturated from previous rainfall and cloud cover dissipates.

Considering the chances for showers and thunderstorms each day and
the associated cloud cover, high temperatures will run near normal
for mid-June this weekend, in the 80s across the area. Low
temperatures will closely reflect the dewpoints, and will run about
4-8 degrees above daily normals. Temperatures will begin to climb in
the early portions of next week, particularly to the south of the
Fall Line, where highs will rise into the low to mid 90s. These
temperatures, combined with the aforementioned dewpoints, will
contribute to maximum heat indices of 100-105 degrees in portions of
central Georgia on Monday through Wednesday.

King

&&

.AVIATION...
(06Z TAFS)
Issued at 144 AM EDT Fri Jun 13 2025

remanant showers moving out and mainly affecting AHN, otherwise
winds have settled to 3kts or less most sites with cloud debris
and low clouds setting up. With low dewpoint depressions could
see some fog develop along with some IFR cigs. Have inserted a
tempo to account for that possibility which is in line with
various guidance suggesting the possibility. Friday will be a
rinse and repeat kind of day with TSRA chances increasing in the
afternoon. Prob30 groups in after 18z but guidance suggests
chances lingering into the 02-04z timeframe. Will need to hone in
on a timeframe in the next package but certainly thinking later
afternoon early evening similar to today. Winds will be shifting
to the SSW side by 12z and should remain that side through the
forecast.


//ATL Confidence...06Z Update...
Medium confidence on CIGS and TSRA timing
High confidence all other elements.

30

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          69  86  70  86 /  70  70  60  80
Atlanta         70  86  72  87 /  50  60  40  80
Blairsville     64  80  65  82 /  60  80  60  90
Cartersville    69  87  69  86 /  50  60  40  90
Columbus        71  89  72  89 /  30  60  30  80
Gainesville     69  84  70  85 /  70  70  60  90
Macon           70  89  71  88 /  60  70  50  80
Rome            69  86  69  85 /  30  60  40  90
Peachtree City  69  86  69  87 /  40  60  40  80
Vidalia         71  90  72  89 /  50  80  50  90

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

SHORT TERM...30
LONG TERM....01
AVIATION...30