Alerts on sudden interface traffic raise or drop in last 30 minutes?

Having an alert based on a sudden traffic change (raise or drop) in last 30 minutes would be very useful.

For example if we have a rapid interface flap that doesn't take the routing down won't be noticed. If we have an alert based in a traffic drop we can be aware of such problems.

On the other way around if we have an alert for traffic raise we can be aware of attack or even traffic changes.