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Hello, I am meteorologist Ryan Willis from the National Weather Service forecast office
in Atlanta. We will be discussing the upcoming weeks weather forecast for north and central
Georgia. Lets get started. The morning weather map shows the frontal
system that will be moving into the forecast area tomorrow. As you can see, satellite imagery
indicates thunderstorm activity across the center of the country in association with
the cold front. The Storm Prediction Center has indicated a large portion of the center
of the country has a significant severe weather threat today. The area extending from the
mid south into parts of the midwest is under a moderate risk for severe weather. This system
is forecast to move into our area tonight and into tomorrow.
Now we will discuss expected timing of the frontal passage for north and central Georgia.
The NAM model indicates the cold front should begin entering Northwest Georgia around 7
am Friday morning. Ongoing thunderstorm activity will likely be associated with the front as
it enters the region. Also notice that rainfall will continue behind the front. By 2 PM the
front should extend through the Atlanta metro area.
The front will continue to progress eastward through the evening hours. By 8 PM the front
should be exiting the county warning area, though some light rainfall will continue across
areas of central Georgia. Regarding the severe weather threat, a squall
line will likely enter northwest Georgia around 7 or 8 AM. At this point, isolated severe
weather will be possible, with the primary threat being damaging winds. However, an isolated
tornado will also be possible. Any tornado that forms will likely be relatively short
lived. The squall line should begin to weaken through the mid morning hours as it approaches
the Atlanta area and instability decreases. During the afternoon hours Friday, the severe
potential will begin to increase across sections of central Georgia with daytime heating. It
appears that damaging winds will remain the primary threat, although hail will also be
possible. There remains some uncertainty regarding the amount of heating and instability that
will exist across central Georgia tomorrow afternoon. More heating and instability would
increase the severe threat. After the passage of the cold front, temperatures
will be below average through the weekend and early next week. This slide shows forecast
low temperatures Saturday morning. Low temperatures in the 40s can be expected across most of
the area, while some locations in the north Georgia mountains will see lows in the upper
30s. These temperatures are five to ten degrees below average.
In summary, a line of thunderstorms associated with the cold front will enter Northwest Georgia
around 7 am Friday morning and move through the region during the day. The cold front
should be exiting the area around 8 pm Friday night. Thunderstorms could be severe as they
enter Northwest Georgia early Friday morning. Damaging winds will be the primary threat
across this area, though an isolated tornado cannot be ruled out. The threat for isolated
severe weather will increase across central Georgia in the afternoon hours as daytime
heating increases instability. Following the cold front passage, the weather this weekend
and early next week will be pleasant, with reduced humidity and below average temperatures.