Area Forecast Discussion
Issued by NWS Atlanta, GA

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FXUS62 KFFC 261127
AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
727 AM EDT Tue Sep 26 2017



.PREV DISCUSSION... /Issued 330 AM EDT Tue Sep 26 2017/

SHORT TERM /Today through Wednesday/...

High pressure at the surface and aloft will remain in place across
the state through the short term. Meanwhile, Hurricane Maria will
continue to slowly move northward off the North Carolina coast and
will not bring any sensible weather impacts to Georgia. With high
pressure in place and no incoming frontal systems or disturbances,
significantly warmer than average temperatures can be expected with
no chance for rain today or Wednesday.

High temperatures today will generally be in the upper 80s to near
90 areawide, with the exception of the expected cooler higher
elevations in the north Georgia mountains. These temperatures are
about 5-9 degrees above average. Wednesday`s highs look even warmer,
running closer to 10 degrees above average. Despite these
unseasonably hot temperatures, forecast highs are generally at least
a couple of degrees below the records for the dates.

RW

LONG TERM /Wednesday Night through Monday/...

Medium-range models are showing some change in trends beginning late
in the period, however overall impacts on the forecast for the region
are not altogether too different from earlier trends. Models are
still showing the weak upper ridge over the region breaking down as
we head into the weekend as a trough sweeps into the Great Lakes,
Ohio Valley and northeast. Lower levels remain dominated by stable,
somewhat dry north-northeast flow around the periphery of Maria.
Looks like this dry, stable airmass will negate any significant
chances for precipitation associated with the upper trough through
the weekend as the dynamics remain well north of the area. Weak wave
over the northeast Gulf of Mexico and north Florida will bring a
slight chance for precipitation to our southern and eastern counties,
but trends have been for this feature to remain weak and a bit too
far away for bigger impacts. Models now building a moderately strong
upper ridge back over the region by early next week, but strong
surface ridge wedged down the east coast into the state should keep
temperatures much more seasonal.

20

CLIMATE...

Records for 09-26

               Max Temperature         Min Temperature
  Station      High        Low         High        Low
  -------  ----------  ----------  ----------  ----------
   KAHN      96 1925     59 1924     71 1904     45 2001
                                                    1950
   KATL      90 1986     59 1940     71 2016     43 2001
                1911
   KCSG      99 1921     65 1974     74 1931     48 2001
   KMCN      96 1970     65 1974     72 2005     46 1964
                            1940        1976

Records for 09-27

               Max Temperature         Min Temperature
  Station      High        Low         High        Low
  -------  ----------  ----------  ----------  ----------
   KAHN      94 1954     62 1949     70 1999     44 1940
                1933                    1996
                                        1976
   KATL      93 1954     62 1937     73 1911     44 1940
                                                    1879
   KCSG      97 1904     65 1948     75 1998     48 1975
                                                    1956
   KMCN      94 1986     65 1937     73 2005     45 1899
                1970                    1998
                1958                    1939

Records for 09-28

               Max Temperature         Min Temperature
  Station      High        Low         High        Low
  -------  ----------  ----------  ----------  ----------
   KAHN      95 1911     52 1957     72 1999     42 1947
   KATL      93 1986     55 1957     74 1911     42 1967
   KCSG      98 1904     64 1957     75 1998     48 1985
                                                    1942
   KMCN      96 1986     60 1957     74 1999     45 1985
                                        1906


&&

.AVIATION...
12Z Update...
Continued VFR conditions are expected through the TAF period with
FEW cumulus expected by this afternoon in the 4500 to 6000 ft
range. Largely NNE winds this morning will trend toward the N and
then to the NNW by afternoon into the evening with speeds
remaining under 10 knots. Winds are expected to remain light on
the NW side through the remainder of the TAF period.

//ATL Confidence...12Z Update...
Low confidence on timing of wind direction shift today.
High confidence on all other elements.

RW

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          88  66  90  68 /   0   0   0   0
Atlanta         88  69  89  70 /   0   0   0   0
Blairsville     83  60  85  60 /   5   0   0   0
Cartersville    87  63  89  64 /   0   0   0   0
Columbus        91  69  92  70 /   0   0   0   0
Gainesville     86  67  88  68 /   0   0   0   0
Macon           89  66  92  67 /   0   0   0   0
Rome            89  63  90  65 /   0   0   0   0
Peachtree City  87  64  90  64 /   0   0   0   0
Vidalia         89  70  91  70 /   0   0   5   5

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$

SHORT TERM...RW
LONG TERM....20
AVIATION...RW



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