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Area forecast discussion 
National Weather Service Peachtree City Georgia 
1038 am EST Thursday Jan 8 2009 


Update... 
middle level clouds starting to break up across the area. Have 
already had some wind gusts this morning...but should pick up 
more this afternoon behind dry weak cold front. Think winds will 
remain just under advisory criteria...but will need to keep a 
close watch. 
&& 




Previous discussion... /issued 520 am EST Thursday Jan 8 2009/ 


Short term /today through Saturday/... 
current satellite loop shows clouds moving in over north Georgia associated 
with the wrap around moisture from the back side of the main low 
center over the New England states. There is some virga showing up 
on radar so some of the higher elevations in north Georgia may see some 
precipitation this morning. Ceilings over north Georgia are in the 9000 to 12000ft 
range so it may be a bit difficult it see much precipitation with the 
clouds so high. Currently temperatures across north Georgia are to warm for snow so 
if any precipitation does fall it should be all rain. Once this backside 
moisture clears out a high pressure ridge builds in over Georgia and 
keeps our area dry through Sat morning. A closed low center begins 
to develop over the Central Plains late tonight and moves into the 
Gulf Coats state Friday. It begins to deepen as it pushes across the 
middle MS valley Friday afternoon and eventually swinging a front through 
Georgia Sat. This looks like it will be our next shot of any precipitation and 
it also looks like it will be all rain. This front has very little 
instability with it but the sheer values look to be fairly strong. 
This is mostly associated with a low level jet that moves through at 
the same time but this jet is not expected to be as strong as what 
we saw with wednesdays severe weather event. Will continue with 
light rain in the forecast with no mention of thunderstorms and rain development. 


Long term /Saturday night through Wednesday/... 
the front that moves into our area Sat morning clear out of the 
region by Sat night with another high pressure ridge building in sun. 
This ridge stays over our area sun and Monday before an Alberta clipper 
dives southeast out of the northern High Plains Tuesday. This frontal 
system does not have much moisture with it but it does unleash a 
considerably colder airmass across the eastern U.S. The models 
show the cold airmass moving into Georgia Wednesday with a cold domed high 
pressure ridge building in. By days 6 and 7 day time highs will be 
in the 40s and 50s with night time lows in the teens and 20s. 


Aviation... 
middle level clouds associated with upper trough should move through 
north and central Georgia this morning. Skies should be mostly clear this 
afternoon. Visibility will be unrestricted. Winds southwest to west 
5 to 10kt this morning...increasing around 16z to northwest 15 to 
20kt and gusty as secondary surface front moves across the forecast 
area. 


&& 


Preliminary point temps/pops... 
Athens 57 30 58 37 61 / 5 0 0 10 60 
Atlanta 56 34 57 43 63 / 0 0 0 20 60 
Blairsville 45 26 51 33 50 / 10 0 0 30 70 
Cartersville 54 27 56 37 58 / 5 0 0 30 70 
Columbus 64 37 61 43 67 / 0 0 0 10 50 
Gainesville 53 31 54 40 53 / 10 0 0 20 70 
Macon 63 35 62 39 69 / 0 0 0 5 60 
Rome 50 32 56 41 58 / 5 0 0 40 80 
Peachtree City 58 31 55 37 64 / 0 0 0 20 60 
Vidalia 66 36 63 39 70 / 0 0 0 5 60 


&& 


Ffc watches/warnings/advisories... 
none. 
&& 


$$ 


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