After sunshine and near normal temperatures tomorrow, with highs in the low 50s, a Christmas treat is possible with some snow possible during Christmas Day in Atlanta. Here are the details.
At this point, a white Christmas is likely in Atlanta, as accumulating snow is expected on Saturday. Temperatures Christmas morning will fall into the mid-30s by dawn. Based on the storm track south of the area, cooler air from the north will be sent into northern Georgia. The best guess at this point is light rain beginning between 7 and 9 AM, becoming heavier through the morning, causing enough evaporative cooling of the air near the ground to become big snow flakes by afternoon. Some wet snow will coat the ground and continue through the next few hours. After that, there is even greater uncertainty: will the precipitation end or will there be more light snow Christmas night?
The National Weather Service is forecasting between one and three inches of snow, with a little more north of the city and less to the south. In stark contrast, Accuweather and weather.com are forecasting a mix of rain and snow resulting in no accumulation throughout the storm. Thermometers will likely read above 32 degrees in Atlanta during the event until colder air moves in overnight. If the snow falls heavily enough, the snow will stick to grassy surfaces in spite of the above freezing temperature.
As of now, there is a nearly 100% chance of seeing snowflakes during Christmas Day, with some accumulation likely, and an inch of more is possible. As reported here, the last time any snow was seen in Atlanta was seventeen years ago. So this is a big deal! Expect an update on the upcoming storm right here tonight and again tomorrow.