National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FXUS62 KFFC 211105
AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
705 AM EDT Sun Apr 21 2024

...New 12Z Aviation Discussion...

.SHORT TERM...
(Today through Monday)
Issued at 347 AM EDT Sun Apr 21 2024

Key Messages:

 - Areas of rain will come to an end from the NW this afternoon and
   evening.

 - Much cooler air will filter into the area behind a cold front
   today and tonight.

 - Areas of frost possible late tonight in the extreme NE.

An approaching shortwave trough has developed a weak frontal wave
along the old frontal boundary over the S portion of the area. These
features were responsible for scattered thunderstorms during the
evening. Isolated storms will linger near and S of a Columbus to
Macon line this morning. Otherwise, areas of mostly stratiform rain
will continue across the remainder of the area. Additional rainfall
amounts of one quarter to one half inch are possible generally from
Athens to the S portion of the Atlanta metro area, with lighter
amounts elsewhere. However, isolated thunderstorms across the S will
still be capable of producing locally higher rain amounts.

Rains will gradually come to an end from the NW this afternoon and
evening as much cooler air finally spreads into the region. High
temperatures today will range from the 50s across the NE mountains
to the mid 70s in the extreme SE. A brief wedge across the NE
portion of the area will aid in keeping daytime highs cool N of the
old front. Highs will be 10 to 15 degrees below normal across most
of the area (5 to 10 degrees below normal in the SE).

Skies will clear from the NW tonight. Winds will diminish enough
late tonight across the N to allow areas of frost to form across the
extreme NE portion of the County Warning Area, and a Frost Advisory
will be issued for that area. Daytime highs on Monday will be mostly
in the 60s across the area (about 10 degrees below normal).

SEC

&&

.LONG TERM...
(Monday night through Saturday)
Issued at 347 AM EDT Sun Apr 21 2024

Highlights:

-Dry conditions expected through the work week with the next
opportunity for rain holding off until the weekend.

-Temperatures start off on the cooler side but will gradually warm
through the week.

Northwest flow aloft and surface high pressure situated across the
Southeast will result in continued dry conditions for North and
Central Georgia through the week. A closed low and surface front
will track across the Great Lakes Region around mid- week. Aside
from some increased cloud cover, not anticipating much in the way of
precip upper level support and more efficient moisture remain
displaced well to the north. Heading into Friday, long term guidance
indicates another closed low forming east of the Rockies and
ejecting east across the Central Plains. With surface high pressure
gradually sliding east during this time, southerly flow at the low
levels will result in a warming trend and gradual moisture return.
thus rain chances may sneak back into the forecast at some point
next weekend.

Tuesday morning will be on the chilly side with lows in the 40s
areawide (upper 30s in the northeast GA mtns). By the afternoon,
temperatures will warm into the upper 60s in the northeast and low
to mid 70s elsewhere. A warming trend begins mid-week (Wednesday)
with forecast highs in the 70s and approaching the mid 80s by the
start of the weekend. Forecast lows will generally be in the 40s and
50s becoming more mild (low 60s) by the weekend.

07

&&

.AVIATION...
(12Z TAFS)
Issued at 702 AM EDT Sun Apr 21 2024

Isolated thunderstorms will continue along the front through the
morning hours. The front has been shifting slowly N as a frontal
wave moves E across the area. Thunderstorms should stay S of ATL,
but they may get close later this morning before the front begins
heading S again. N of the front, areas of mostly stratiform rain
with embedded heavier showers will continue through early to mid-
afternoon. Cigs will continue to lower until rains come to an end,
then lift and gradually thin from the NW. Winds will be generally
light, although some gusts to near 20 knots are expected during
the afternoon at Atlanta area terminals. Wind directions will
continue mostly out of the NW, although NE winds are expected at
AHN during the morning and early afternoon as a weak wedge
temporarily develops.

//ATL Confidence...12Z Update...
Medium for cig heights and minimum vsby reductions in rain and
position of front (and N extent of thunder), high for other
elements.

SEC

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          46  66  42  73 /  10   0   0   0
Atlanta         44  66  45  72 /  10   0   0   0
Blairsville     35  64  37  68 /  10   0   0   0
Cartersville    39  66  39  73 /   0   0   0   0
Columbus        47  69  46  75 /   0   0   0   0
Gainesville     45  66  43  71 /  10   0   0   0
Macon           49  68  44  74 /  10  10   0   0
Rome            40  68  40  74 /   0   0   0   0
Peachtree City  43  67  42  73 /   0   0   0   0
Vidalia         53  69  47  75 /  20  10   0   0

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
Frost Advisory from 4 AM to 9 AM EDT Monday for GAZ006-008-009.

&&

$$

SHORT TERM...SEC
LONG TERM....07
AVIATION...SEC