Is there an indicator that shows the divergence between 2 MAs?

I'm looking for an indicator that signals when 2 different period moving averages are moving away from each other...

I can see the divergence if I place the MAs on my chart, but I'm looking for an indicator that signals it.

Does anyone know if one exists?

Thanks

The rest of use MACD for this. If you searc, you might find one with a custom alert that suits you.