The frost line is the depth at which moisture will freeze in the ground. Due to variations in winter temperatures and soil moisture content , the frost line isn’t the same everywhere.

This is the first frost of the season for the High Country in North Carolina and Virginia. Lows are forecast to drop into the low to mid-30 for several hours.

Chilly, below-normal temperatures have brought about some of the first frost advisories of the season across several counties in Maryland and Virginia. Click to toggle navigation menu. Headlines ...