As part of the planned CDS Cloud Infrastructure Migration to Bologna, there will be a CDS system session on 1/3/22.
This session will be from 10:00-12:00 UTC on 1/3/22, and for around 30 minutes the CDS will be unavailable.
For the rest of this period, the CDS service will be degraded and user requests may be queued, so users should expect delays to their requests.
ECMWF support
