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Area Forecast Discussion

AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
611 AM EST Sun Dec 7 2025



...New 12Z Aviation Discussion...

.KEY MESSAGES...
Updated at 559 AM EST Sun Dec 7 2025

- Dense fog will create hazardous travel conditions in north and
central Georgia through 10 AM today.

- Light rainfall returns to the region Sunday night and Monday
morning with amounts in the 0.01 to 0.35 inch range expected.

- An additional round of modest rainfall is anticipated in the
region Thursday into Friday.


&&

.SHORT TERM...
(Today through Monday)
Issued at 249 AM EST Sun Dec 7 2025

Dense Fog Concerns:

Dense fog will remain a significant concern for travelers and
commuters through 10 AM this morning, with the worst conditions
expected in north Georgia. Thus a Dense Fog Advisory has been issued
for all of north and central Georgia. The conditions remain most
favorable for fog north of Macon (especially along the Interstate 20
corridor) where cloud free skies and calm winds are producing strong
radiational cooling. Fog intensification likely through in this part
of the state through 8 AM. South of Macon, where mid level cloud
cover exists, conditions for fog maintenance aren`t as favorable.
Observations also indicated more patchy visibility restrictions in
this part of the state as of 230 AM. There is a 40 percent chance
that we trim back the southern edge of the Dense Fog Advisory before
8 AM.

Along and north of Interstate 20 surface temperatures are in the 29
to 33 degree range this morning. This tosses the specter of freezing
fog into the equation. However for freezing fog to impact roadways
we need roadway temperatures that are receptive to ice
accumulations. The road sensor network is showing road temperatures
in the 35 to 40 degree range this morning. This is well above
freezing and suggests that ice accretion is unlikely, even on the
overpasses and bridges. Dewpoint temperatures are also lower than
the road temperatures, and this isn`t favorable for sublimation or
condensation on the roadways. Given these considerations we do not
plan to issue a Freezing Fog Advisory.

Additional fog formation is possible tonight or Monday morning.
However increasing cloud cover and potential rainfall suggests that
widespread dense fog is unlikely. Thus the odds of a Dense Fog
Advisory being issued tonight are below 20%.

More Rainfall Tonight & Monday:

A shortwave will move out of the Southern Plains and race through
the Southeast during this period. Lift ahead of this wave should
produce a persistent band of light rain in Mississippi and Alabama
this evening, and rain will reach Georgia overnight. The moisture
profiles for this system to work with look pretty average (PW values
of 0.7 to 1.1 inches). This will limit rainfall amounts and it
should focus the best rainfall totals over central Georgia. We
expect rain totals in the 0.01 to 0.35 inches range by noon on
Monday, with the highest amounts anticipated in central Georgia.
Thunderstorms and flooding concerns are not expected.

&&

.LONG TERM...
(Monday night through Saturday)
Issued at 249 AM EST Sun Dec 7 2025

Forecast:

Monday evening looks as though we may have some cloud cover sticking
around in a few areas as temperatures drop into the 20s and 30s as
colder air moves into the area, including what looks to be some cold
air damming from the NE. Skies will clear on Tuesday and we can
finally make an attempt to dry out a little bit as surface high
pressure sets up over the top of the CWA, even if briefly. Highs
will be in the upper 40s and lower 50s.

A stronger shortwave embedded in a deeper Arctic low over the
southern Hudson Bay will drive into the midwest and Great Lakes on
Wednesday into Thursday morning. The surface low will remain well to
our north but drive a cold front towards the area sometime Thursday.
There continues to be a good bit of uncertainty around this system,
with some runs of the models (like the 00Z GFS) coming in completely
dry, and others showing precip as the front moves in. Either way,
any precip associated with it right now looks as though it would be
light and not very impactful.

What may be more impactful is the second shortwave coming in behind
with a massive 1050+ mb surface high that sets up over the Canadian
Plains and spills into the US starting Friday into the weekend.
Likely will see some decent cold air if this progresses into our
area. Current forecast temps are actually a bit warmer than the NBM
50, and the NBM 10 has an average minimum temperature in the teens
across much of north and central Georgia. So the potential exists
for a decent shot of cold air if it does progress into us.
Definitely worth keeping an eye on this, as this would be some of
the coldest air of the season thus far even if the current forecast
temps pan out.

&&
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