The default Circonus home page will automatically display a list of the most recent active alerts within your account.
To view all your alerts, click View all at the bottom of this list or select Alerting within the main menu.
You will then be navigated to the Alerts tab within the Alerting section. Here, you will see a list of all historical and active alerts for your account grouped by rule.
Above, you can see the history of alerts generated by a ruleset named BGP Connection not Established.