Tonight I drove my 1999 ford explorer for about 10 minutes. As I got to where I was going I shut the car off and I noticed white smoke coming from underneath my hood. Along with a light smell. Sounded as if my truck had steam coming from underneath. Can anyone help me with what that might be. Thanks In Advance

You probably have a coolant leak. You should get this looked at as soon as you can before damage could occur.