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112
NOUS72 KNES 111619
ADMNES
*TOPIC: *SENTINEL-3A SERVICE, SENTINEL-3B SERVICE



DATE/TIME ISSUED: AUGUST 11, 2026 1605Z



PRODUCT(S) OR DATA IMPACTED: SENTINEL-3A SERVICE, SENTINEL-3B SERVICE



*DATE/TIME OF INITIAL IMPACT:* AUGUST 11, 2026 0935Z



*DATE/TIME OF EXPECTED END:* AUGUST 11, 2026 1117Z


*LENGTH OF THE OUTAGE/EVENT:* 1 HOUR, 42 MINUTES


MESSAGE NUMBER: 14780
MESSAGE CREATION: TUE AUG 11 15:57:05 UTC 2026
TYPE: SERVICE ALERT
ANN NR: 13695
REV: 1
START TIME: 2026-08-11 09:35:00.0
END TIME: 2026-08-11 11:17:00.0
SUBJECT: GROUND-SEGMENT-ANOMALY
IMPACT: DATA-DELAYED
DETAIL: ALL S3A DATA WITHIN TIMELINESS FROM 10:54. ALL S3B DATA WITHIN
TIMELINESS FROM 11:17.
REVISION HISTORY: [ORIGINAL] INVESTIGATION IS ONGOING. S3A DATA AFFECTED
STARTING 10:13, S3B DATA AFFECTED STARTING 09:35.
STATUS: RECOVERED
ISSUE TIME: 2026-08-11 15:56:40.0
SERVICES: OLCI LEVEL 1 PRODUCTS - S3A
MWR LEVEL 1 PRODUCTS - S3A
SLSTR LEVEL 2 MARINE PRODUCTS - S3A
SLSTR LEVEL 1 PRODUCTS - S3A
OLCI LEVEL 2 MARINE PRODUCTS - S3A
SLSTR LEVEL 2 ATMOSPHERIC PRODUCTS - S3A
SRAL LEVEL 1 PRODUCTS - S3A
SRAL LEVEL 2 MARINE PRODUCTS - S3A
OLCI LEVEL 1 PRODUCTS - S3B
MWR LEVEL 1 PRODUCTS - S3B
OLCI LEVEL 2 MARINE PRODUCTS - S3B
SLSTR LEVEL 2 MARINE PRODUCTS - S3B
SLSTR LEVEL 1 PRODUCTS - S3B
SRAL LEVEL 1 PRODUCTS - S3B
SLSTR LEVEL 2 ATMOSPHERIC PRODUCTS - S3B
SRAL LEVEL 2 MARINE PRODUCTS - S3B

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