The LUMI supercomputing system will undergo a scheduled maintenance period starting on 7 January 2026, during which significant parts of the system software will be updated to deliver a more stable and up-to-date system. LUMI is expected to return to production on 21 January 2026.
During this period, the Extremes Digital Twin (DT) will be unable to run, and no reruns will be performed. As a result, Extremes DT data for the period from 7 January 2026 to 21 January 2026 will not be available.
While LUMI databridge services will not be affected, additional disruption is expected after the maintenance window. For this reason, data for several dates after 21 January 2026 is also likely to be unavailable, with availability potentially affected up to 28 January 2026.
Further details on the LUMI maintenance notice.