Increased Error Rates and Latencies

1:21 PM PST We are investigating increased error rates and latencies for CloudWatch Logs APIs in the US-WEST-2 Region. Log events and metrics may be delayed. Alarms may transition into "INSUFFICIENT_DATA" state if set on delayed metrics.

1:42 PM PST Between 12:41 PM and 1:07 PM PST, we experienced elevated error rates when calling CloudWatch Logs APIs in the US-WEST-2 Region. Some log events and metrics were delayed, and CloudWatch alarms on delayed metrics transitioned into INSUFFICIENT_DATA state. We have resolved the issue. Delayed metrics and log events are in the process of backfilling in CloudWatch console graphs and for API retrieval. The issue is resolved and the service is operating normally.