If you look at the code
static void Main(string args)
// declare boolean values
bool icyRain = false;
bool tornadoWarning = false;
if ((icyRain) && (tornadoWarning))
Console.WriteLine("Let's go outside!");
The if condition will be evaluated as
if(false) && (false), which will be equal to if(false).
that means, only the code in the else part will be executed here (unfortunately you didn't add any else part.
Also, please add a Console.Read() to hold the console window, until you press any key!