Here is a link to the Google Search Status Dashboard!
https://status.search.google.com/products/rGHU1u87FJnkP6W2GwMi/history
This dashboard was created by Google to share all status updates to the Google Search System. If you’re ever curious about a past core update or why a client’s website traffic suddenly took a dip, this will be the place to go to understand what may have changed behind the scenes.