Duplicate Health notifications

12:39 PM PDT We are investigating duplicate notifications being delivered from the AWS Health Service.

1:05 PM PDT We continue to investigate duplicate notifications that are being delivered by the AWS Health Service. During this time, customers may be receiving notifications via email, or Cloudwatch Events for previously communicated issues. Customers will not see additional events listed in their AWS Health Dashboard. Additionally, we'd like to clarify that there is currently no active impact to any of the AWS Services; all services are operating normally. We are working to mitigate the issue and identify the root cause of the duplicate notifications. We will provide an update within the next 30 minutes.

1:46 PM PDT We have identified the root cause as a recent change to how EventBridge processes Events. We are rolling back this recent change, which will mitigate the impact of receiving duplication notifications. We will continue to provide updates as our recovery progresses. Our current expectation is full recovery within an hour.