The alert was published again after it was cleared
Release : 4.2
Component : Service Operations Insight (SOI) Manager
When SOI manager gets an alert it updates the "LoggedTime" property with date and time it received, when the alert is cleared from SOI the "ClearedTime" property of the alert is updated with date and time it was cleared. Both of these properties can be found in dbo.Alerts table. In this case the "LoggedTime" of one of the alert shows later then the "ClearedTime", in other words, the alert was cleared then got republished again from the source.