Meteorologists say widespread rain should switch over to the white stuff sometime Thursday afternoon or evening, but the heaviest snowfall would be in the north Georgia mountains.
The winter storm watch—in effect for Cobb and other counties from Thursday afternoon through Friday morning—means there is a potential for significant snow, sleet or ice accumulations that may impact travel.
Locations north of a line from Carrollton to Atlanta to Jefferson could see an inch or less of snow, while accumulations in the northeast and northwest
Georgia mountains could reach 2 to 4 inches.
Possible black ice is a hazard across the area on Thursday night and Friday morning when temps fall below freezing.
Snowfall should begin in northwest Georgia by mid Thursday afternoon, then the continue through the rest of north Georgia through the late afternoon and early evening hours.
Light accumulations up to 1 inch are possible on roadways across higher elevations in the mountains.
In Smyrna and Vinings, "new snow accumulation of less than a half inch possible" both Thursday and Thursday night, according to the NWS forecast. The forecast calls for a low of 29 and rain before 4 p.m. Thursday, then rain, snow and high winds.
Cobb also is under a Flood Watch, as parts of north Georgia have gotten 3 to 6 inches of rain and can expect an 1 to 2 inches through Thursday evening.