Between 3:13 AM and 4:37 AM PDT, some customers experienced elevated faults when calling CloudWatch APIs in the EU-WEST-1 Region. Some metrics were delayed, and CloudWatch alarms on delayed metrics transitioned into INSUFFICIENT_DATA state. The issue has been resolved and the service is operating normally.
Between 12:40 PM and 1:07 PM PST, we experienced elevated API errors and event delivery latencies in the US-WEST-2 Region. The issue has been resolved and the service is operating normally.