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Area forecast discussion...updated 
National Weather Service Peachtree City Georgia
1137 am EDT Sat Mar 28 2015



Updated
have removed the headline for the expired freeze warning. Freeze warning for
tonight left as is. Otherwise no changes.

41

Previous discussion... /issued 429 am EDT Sat Mar 28 2015/

.Freeze warnings in effect for north and portions of central
Georgia tonight...

Short term /today through Sunday/...
high pressure will continue across much of Georgia through the short
term period.

Temperatures in far northern Georgia are in the lower to middle 30s. A
little further south...temperatures are in the middle to upper 30s
within the freeze warning area. Temperatures have been a little slow to
drop due to the gradient...and some patchy cloud cover. Will not
make any changes to the freeze warning currently in effect for
Saturday morning...temperatures are just too close. The gradient still has
time to relax and skies are expected to clear towards dawn.

High pressure is currently centered across the central Great Lakes.
The high will drop south during the day and should move directly
overhead tonight. With clear skies and near calm winds...good
radiational cooling will occur. This means that the cooler than
normal temperatures will continue...with overnight values around 15
degrees below normal for this time of year. Have gone ahead and
changed the freeze watch to a freeze warning for Saturday
night/Sunday morning. If models come in a little cooler in
successive runs...the freeze warning may have to be expanded a
little further south by following shifts.

Otherwise...mostly clear to partly cloudy skies will continue. No
precipitation is expected through the period.

Nlistemaa

Long term /Sunday night through Friday/...
the extended forecast starts off with the high pressure ridge
exiting the Carolina/Georgia coast as next frontal system pushes
into north Georgia late Sunday night/early Monday morning. GFS and European model (ecmwf)
in good agreement showing this front moving through the area
Monday bringing increased rain chances to the area. Instability
is a bit low so will keep just showers...no thunder for Monday.
Models then show a wave moving east out of Texas Tuesday and pushing into
Georgia Tuesday night/Wed. The GFS is a bit stronger with this wave than
the European model (ecmwf)...but they both show the same general pattern. They both
also show a bit more instability than yesterday so decided to
introduce isolated thunder during the afternoon and evening hours
Tuesday through Friday. Still not expecting any severe weather at this
time as the thunder threat is still weak at best through the end
of next week. Will keep an eye on this the next few days as would
not be surprised to see the models continue to evolve as things
get closer. Temperatures expected to be near seasonal norms in the
extended.

01

Climate...

Records for 03-29

Maximum temperature min temperature
station high low high low
------- ---------- ---------- ---------- ----------
kahn 85 1928 47 1959 62 1977 25 1887
1907
katl 84 1989 43 1894 65 1924 25 1887
1945
kcsg 89 2007 52 2001 67 1997 32 1955
1953
1948
kmcn 87 1907 47 1926 67 1924 30 1966



&&

Aviation...
12z update...
scattered/occasionally broken cumulus near the airfield. Do think the cumulus will
linger through at least middle morning...before skies go sky clear. Northwest
winds around 10kt for most of the day before speeds dip to below 6kt
overnight. Winds will begin to shift to the east side of north
early tomorrow as high pressure begins to shift off the southeast coast.

//Atl confidence...12z update...
high confidence all elements.



&&

Preliminary point temps/pops...
Athens 53 28 59 44 / 5 5 0 40
Atlanta 51 32 59 47 / 5 5 0 40
Blairsville 44 23 54 42 / 5 5 0 60
Cartersville 50 27 60 46 / 5 5 0 50
Columbus 56 34 63 48 / 0 5 0 20
Gainesville 50 28 57 45 / 5 5 0 50
Macon 57 31 61 45 / 0 5 0 10
Rome 51 26 60 47 / 5 0 0 60
Peachtree City 53 29 60 46 / 5 5 0 40
Vidalia 58 34 62 45 / 0 5 0 10

&&

Ffc watches/warnings/advisories...

Freeze warning from midnight tonight to 10 am EDT Sunday for the
following zones: Baldwin...banks...Barrow...Bartow...Bibb...
Butts...Carroll...Catoosa...Chattooga...Cherokee...Clarke...
Clayton...Cobb...Coweta...Crawford...Dade...Dawson...DeKalb...
Douglas...Fannin...Fayette...Floyd...Forsyth...Gilmer...
Glascock...Gordon...Greene...Gwinnett...Hall...Hancock...
Haralson...Harris...heard...Henry...Jackson...Jasper...
Jefferson...Jones...Lamar...Lumpkin...Madison...Meriwether...
Monroe...Morgan...Murray...Newton...north Fulton...Oconee...
Oglethorpe...Paulding...Pickens...Pike...Polk...Putnam...
Rockdale...South Fulton...Spalding...Talbot...Taliaferro...
towns...Troup...Twiggs...Union...Upson...Walker...Walton...
Warren...Washington...white...Whitfield...Wilkes...Wilkinson.

&&

$$

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