It covers most of North and Central Georgia... along and north of a line from Hamilton to Jeffersonville to Swainsboro.
Forecasters say expect temperatures to drop below freezing for four-to-eight hours early Tuesday... raising the possibility of damage to some trees and vegetation.
TEXT OF THE NATIONAL WEATHER SERVICE STATEMENT:
... Freeze warning in effect from 1 am to 9 am EDT Tuesday...
The National Weather Service in Peachtree City has issued a
freeze warning... which is in effect from 1 am to 9 am EDT Tuesday.
The warning is generally along and north of a line from Hamilton
to Jeffersonville to Swainsboro. This includes much of north and
central Georgia. The freeze watch is no longer in effect.
Temperatures are expected to drop below freezing for 4 to 8 hours
over much of north and central Georgia late tonight. Many trees
and vegetation are in a sensitive phase of growing and may suffer
damage due to the prolonged freezing temperatures.
A freeze warning means freezing temperatures are forecast to
threaten outdoor plants. Those with agricultural interests in the
warned area are advised to harvest or protect tender vegetation.

http://accesswdun.com/article/2008/3/208318