The National Weather Service has issued a wind advisory for North Alabama, including Marshall and DeKalb counties. It's in effect until nine o'clock tonight. An approaching storm system will increase southwest winds to between 20 and 25 miles an hour. In addition, winds will frequently gust to 35 miles an hour. Winds of this magnitude can blow around any unsecured outdoor objects, blow down loose tree limbs and making driving difficult for those in high-profile vehicles.