# Confluent: Elevated error rates and latency on produce and consume operations on AWS us-east-1 AZ4

- Impact (vendor’s label): major
- Status: resolved
- Started: 2026-05-08 01:14 UTC · Resolved: 2026-06-04 16:47 UTC · Duration: 28 d
- Updates: 5 · Affected components: Confluent Cloud
- [Vendor status page: https://stspg.io/br3hbb97ft7r](https://stspg.io/br3hbb97ft7r)
- [Company: Confluent](https://rewindex.com/company/confluent.md)

## Summary

Confluent Cloud reported a major incident affecting produce/consume operations in AWS us-east-1 AZ4, with elevated errors, latency and lingering connectivity issues. It started 2026-05-08 01:14 UTC and resolved 2026-06-04 16:47 UTC, lasting 27 days 15 h. Confluent attributed the initial impact to EC2 power loss during a thermal event and confirmed full operation at resolution. _(machine-written, sol)_
## Timeline of updates

- **investigating** 2026-05-08 01:14 UTC: We are investigating data plane impact (produce/consume) resulting from elevated error rates and latencies from AWS us-east-1 resources in AZ4. EC2 instances hosted on this availability zone are impaired by loss of power during an ongoing thermal event.
- **monitoring** 2026-05-08 01:55 UTC: We are monitoring the health of impacted brokers in the affected availability zone. More details about the thermal event on the AWS status page: https://health.aws.amazon.com/health/status
- **monitoring** 2026-05-09 13:19 UTC: AWS has resolved the underlying infrastructure issue in us-east-1 (use1-az4). The majority of Confluent Cloud services have recovered and are operating normally. We are continuing to monitor for any lingering effects and verifying full service restoration.
- **monitoring** 2026-05-12 18:51 UTC: AWS has reported the underlying infrastructure issue in us-east-1 (use1-az4) as resolved. However, some Confluent Cloud customers in the affected availability zone continue to experience connectivity issues.  Confluent is actively investigating and working to restore full connectivity for impacted customers.
- **resolved** 2026-06-04 16:47 UTC: The incident has been resolved and us-east-1 (use1-az4) is fully operational.

## Rewindex changes for this incident

- 2026-05-08 01:14 UTC: [Major incident: Elevated error rates and latency on produce and consume operations on AWS us-east-1 AZ4](https://rewindex.com/change/i4534fd33a396f4.md)


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Canonical: https://rewindex.com/company/confluent/incidents/5r69blxpvzn3 · Markdown: https://rewindex.com/company/confluent/incidents/5r69blxpvzn3.md · JSON: https://rewindex.com/api/v1/companies/confluent/incidents/5r69blxpvzn3 · Generated 2026-10-18T10:37:58.714Z