Topic: Sentinel-3A Service
Date/Time Issued: December 19, 2025 1024Z
Product(s) or Data Impacted: Sentinel-3A Service
Date/Time of Initial Impact: December 6, 2025 1400Z
Date/Time of Expected End: December 08, 2025 1552Z
Length of the Outage/Event: 2 days and 1 hour and 52 minutes
Status: Recovered
| Message number: | 13925 |
| Message creation: | Fri Dec 19 10:11:18 UTC 2025 |
| Type: | Service Alert |
| Ann Nr: | 12871 |
| Rev: | 2 |
| Start Time: | 2025-12-06 14:00:00.0 |
| End Time: | 2025-12-08 15:52:00.0 |
| Satellites: | Sentinel-3B |
| Subsystem: | SRAL |
| Subject: | Instrument anomaly |
| Impact: | data-degraded |
| Detail: | Due to issues with the S3B GNSS, the orbit quality is degraded, impacting Sea Level retrievals. Wind and wave retrievals do not appear to be impacted. Impact on NRT and STC production. |
| Revision History: | [Original] Investigation is ongoing. [Rev.1] Service has been resumed. |
| Status: | recovered |
| Issue Time: | 2025-12-19 10:08:44.0 |
| Services: | SRAL Level 2 Marine Products - S3B |
| Name: | EUMETSAT |
| Address: | Eumetsat-Allee 1 D-64295 Darmstadt Germany |
| Telephone: | +49 6151 807 3660/3770 |
| Fax: | +49 6151 807 3790 |
| E-mail: | ops@eumetsat.int |
| User Portal: | https://user.eumetsat.int |
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