I found this doing a search.
What is a Signal Grace?Signal Graces are signs sent by God to help us make the right decisions in life. Moses saw a burning bush as a sign from God, and other people received signs from God daily. Signal graces usually come about as subtle hints to help keep us moving in the right direction - these signs are truly gifts from God.
Remember - there is no such thing as a coincidence, everything happens for a reason! By praying the rosary you will be more conscious of the way that God tries to help you and speak to you every day.
That’s very cool. Another poster on another thread was just recently talking of signal graces. Thanks a lot for sending that link. Coincidences? Nah. I agree. Don’t think so.