A scheduled essential maintenance of the Data Stores Cloud infrastructure is planned on Monday 19th May 2025, 10:30-15:30 UTC (time window subject to change).
During this period, the following services will be impacted:
- Climate Data Store (CDS) , Atmosphere Data Store (ADS) and CEMS Early Warning Data Store (EWDS): No access, whether through the web interface or using the API service.
- CAMS and C3S websites: No access
- ECMWF Forum: access at risk.
We advise users to monitor our ECMWF Service Status page to check the Data Stores status and other ECMWF services.
Access to the affected services will be restored as soon as the maintenance session will have successfully completed.
Should the timing of the session be changed, we will post an update in this topic.
We apologise for the inconvenience this may cause.
ECMWF Support