Area Forecast Discussion
Issued by NWS Atlanta, GA
FXUS62 KFFC 301432
Area Forecast Discussion
National Weather Service Peachtree City GA
1032 AM EDT Fri Sep 30 2016
No necessary changes needed to the forecast this morning. Water
vapor loop showing a few subtle vort maxes across TN rotating
within broader scale trough. These combined with weak divergence in
the 300mb jet exit region over the TN valley has allowed for
nothing more than some extra cloud cover to our north. These
clouds should continue to stay north but may glance our northern
counties. Beautiful day still on tap with guidance showing highs
in the 70s most locations with mostly clear skies.
PREV DISCUSSION... /Issued 330 AM EDT Fri Sep 30 2016/
SHORT TERM /Today through Saturday/...
Quiet weather expected across the area this short term period.
The 500mb low pressure center moves n this period which further
minimizes its effect on the forecast area. Some cloud cover can
be expected over the northern counties today but for the most part
little or no cloud cover is expected for most of the forecast
area and hence dry conditions will prevail. With the surface
front over se GA drifting away...a cooler airmass will continue
to move in over the area today.
Forecast high temperatures are running near to 4 degrees below
normal today and slightly above normal for Saturday. Forecast low
temperatures are running 5-9 degrees below normal for tonight.
Overall confidence is high.
LONG TERM /Saturday Night through Thursday/...
Very little chances for precipitation for the CWFA in the long term
portion of the extended forecast.
A longwave trough will remain in place across the SE US through
early next week before shifting eastward. Ridging aloft will build
for the latter half of the week. For much of the forecast period,
high pressure will dominate at the surface. The ridging at the
surface will begin to break down by the latter half of next week as
a front approaches from the west. Models currently prog the front to
begin approaching the CWFA by Friday.
Temperatures will remain seasonable for much of the period, but
begin to creep to slightly above normal values by mid to late next
Still of note...the official NHC forecast does keep Matthew moving
just east of the FL peninsula. Both the GFS and ECMWF handle the
hurricane a little differently with timing and location next week,
but they both are keeping the storm offshore the SE coast of the US.
However,interested parties should remain alert of any changes in the
While no critical fire weather conditions are expected today...
relative humidities will get down into the upper 20s and lower 30s
for portions of east and central GA. A larger portion of n and all
of central GA can expect min rh`s in the upper 20s and lower 30s
on Saturday with some areas of central GA around 25 percent.
Winds of 10 mph or less can be expected today and mainly light winds
VFR conditions expected with clear to sct cu/sc/ac in the
4500-9000 ft range. Surface winds wnw 10 kts or less through the
day becoming light or calm tonight.
//ATL Confidence...12Z Update...
HIGH Confidence on all elements.
.PRELIMINARY POINT TEMPS/POPS...
Athens 77 51 82 55 / 0 0 0 0
Atlanta 75 55 80 60 / 0 0 0 0
Blairsville 71 47 75 51 / 0 0 0 0
Cartersville 74 48 79 55 / 0 0 0 0
Columbus 78 54 84 59 / 0 0 0 0
Gainesville 74 53 78 57 / 0 0 0 0
Macon 80 50 84 54 / 0 0 0 0
Rome 75 50 80 54 / 0 0 5 0
Peachtree City 75 50 81 54 / 0 0 0 0
Vidalia 85 57 86 61 / 0 0 0 0