Temperatures plunged well below freezing across Georgia Tuesday morning, prompting at least one school district to close.

The National Weather Service in Peachtree City said a wind chill advisory was to continue through 10 a.m., as wind chill readings were expected to be as low as 2 degrees below zero.

The low wind chill was a result of extremely cold temperatures combining with strong winds. The wind chill alert was in effect for Fannin, Gilmer, Union, Towns, Pickens, Dawson, Lumpkin and White counties in northGeorgia.

WSB Radio reports the cold weather prompted officials in Union County to cancel classes.

Shortly after 5 a.m. Tuesday, the weather service was reporting 21 degrees with light snow in Blairsville, in the north Georgia mountains. It was about 25 degrees in Atlanta.