580
FXUS62 KFFC 141035
AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
635 AM EDT Fri Aug 14 2026



...New 12Z Aviation Discussion...

.KEY MESSAGES...

-  A Heat Advisory is in effect for much of north and central
   Georgia from noon to 8 PM on Saturday.

-  Isolated to scattered thunderstorms will be around each
   afternoon through the weekend, with primary threats being
   gusty winds and locally heavy rainfall.

-  Heat concerns will continue throughout the weekend into early
   next week, with heat index values peaking in the 100s each day.


&&

.SHORT TERM...
(Today through Saturday)
Issued at 254 AM EDT Fri Aug 14 2026

We start this early morning with some high cloud cover in place
across the CWA. On a different night these might be having an impact
on temperatures, but the high moisture content in place across north
and central Georgia means that overnight temperatures remain quite
warm anyway. Observations show dewpoints remain in the 70s, and the
temperatures didn`t take long to fall into those values. There are
some signs of shallow, patchy fog starting to develop. Expect that
to continue with some limited impacts across the area through the
morning hours.

The main story the next few days will be the heat. Ridge axis has
parked itself right over the top of the southeast. We can`t be
allowed to at least suffer in a dry heat here in Georgia, so said
ridge is quite dirty, with PWATs remaining close to 2" across north
and central Georgia Friday and Saturday. Surface dewpoints will
likely hover in the 70s even once the afternoon mixing machine gets
up and running. Highs will soar into the 90s. Put those all those
things together, and you have an unfortunate recipe for triple digit
heat indices, WBGT values above 88 (and getting above 90 in some
areas), and HeatRisk values that rise into the major category
despite being in one of our warmest months climatologically. The
current Heat Advisory will be extended in time to include overnight
Friday and the day on Saturday. Elevated overnight temperatures and
humidity mean that recovery for those who may not have access to A/C
will be limited. Will also need to monitor parts of eastern Georgia
for potential Extreme Heat Warnings. Current forecast heat indices
approach or exceed 110F in some areas. Given the duration of this
event and lack of overnight relief with lows remaining well into the
70s, these may be necessary going into Saturday. The biggest source
of uncertainty on an upgrade to the warning would be thunderstorm
coverage, which would limit afternoon heating during hottest time of
day.

As mentioned above, with PWATs remaining elevated, thunderstorm
chances will also stick around despite the lack of upper level aid.
With upper level ridge overhead and moisture through a good chunk of
the column, lapse rates are poor and upper levels are warm.
Expectation is that high surface moisture and strong afternoon
heating will still hit the convective T. While widespread severe
weather is very unlikely thanks to limited/no shear, downdrafts will
be loaded with plenty of water and capable of crashing down with
some force. A few strong to severe wind gusts will be possible.

&&

.LONG TERM...
(Saturday night through Thursday)
Issued at 254 AM EDT Fri Aug 14 2026

Little change in the long-term forecast with a dominant ridge
centered over the Mississippi Valley region and amplifying over
our region through the weekend. As such, expect a continuation of
summertime heat and humidity, with temperatures in the mid to
upper 90s and dew points in the 70s over the CWA outside of the
far northeast mountains. The above normal temperatures will remain
in place through the beginning of next week, with heat indices in
the 100-108 range reaching Heat Advisory criteria over most of
our CWA through the first of next week.

By mid-week, the ridge begins to flatten and shifts westward over
the Southern Plains; however, this will not provide much relief from
the mid-August heat. Given precipitable water values of 1.5-2.1
inches and our area residing along the eastern periphery of the
ridge, the prospect for diurnal afternoon thunderstorms will
continue into next week. Coverage will depend on whether any
disturbances propagate through the flow into our area. Therefore,
the details of just how convectively active the period will be
should come into better focus over the next couple of days.

&&

.AVIATION...
(12Z TAFS)
Issued at 633 AM EDT Fri Aug 14 2026

VFR through TAF period outside of TSRA concerns. Winds are W to NW
at 4 to 8 kts at KATL, and are light and VRB at other sites but
will pick up shortly after sunrise. Cu development expected this
afternoon. TSRA chances are in place from 18Z to a little before
00Z and will bring only chances of impacts. Winds go light to calm
at most sites overnight.

//ATL Confidence...12Z Update...

High all elements.

Lusk

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          97  75  99  75 /  20  10  40  10
Atlanta         95  77  96  77 /  30  10  20  10
Blairsville     88  70  89  71 /  20  10  30   0
Cartersville    94  75  96  75 /  30  10  20   0
Columbus        96  77  96  77 /  40  10  40  10
Gainesville     95  76  96  76 /  20  10  30  10
Macon           95  75  96  76 /  40  10  40  10
Rome            94  75  95  75 /  30  10  20   0
Peachtree City  94  75  95  75 /  40  10  30  10
Vidalia         97  76  98  76 /  20  20  30  10

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
Heat Advisory from noon today to 8 PM EDT Saturday for
GAZ001>005-011-012-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113.

&&

$$

SHORT TERM...Lusk
LONG TERM....82
AVIATION...Lusk