Custom Alerts on Dimension Values



Is it possible to create a calculated metric that can be used as an automated alert to detect if any dimension's value begins appearing at a higher or lower than normal frequency.  For example, if I wanted to monitor the product dimension to see if any individual product suddenly had a large shift in volume (like a new product rolls out, or a particular high volume product suddenly drops off).  Or in another situation, I want to know if any state's revenue suddenly increases or decreases.

I know this can be done by explicitly defining or selecting the dimension value but is there any way we can do this without selecting the dimension value and the alerts to say "Value-X revenue decreases by x %".