Update #4 - S-NPP spacecraft entered a non-nominal state at 00:33 UTC on April 28, 2026. Engineering has started spacecraft recovery activities. The S-NPP spacecraft remains in sun point. All science data remains unavailable and will not be recoverable until further notice; however, all instruments are in a safe state. PDA OPS requests for all S-NPP Science products were disabled at 15:04 UTC on April 28, 2026. NOAA-21 and NOAA-20 remain the primary JPSS series spacecraft, and Key Performance Parameters from their instruments continue to be delivered.

S-NPP is a Tertiary satellite with no performance and latency requirements.

Update #3 - S-NPP data is still unavailable and Engineering is investigating

Update #2 - S-NPP data will not be available until further notice. Engineering will continue troubleshooting at the next business day.

Update #1: NPP Stored Mission Data (SMD) for REV 75134 was not received. Engineering investigating.

Topic: NPP Data Delay

Date/Time Issued: April 28, 2026 2203Z

Product(s) or Data Impacted: NPP Data Products

Date/Time of Initial Impact: April 28, 2026 0230Z

Date/Time of Expected End: TBD

Length of Outage: TBD

Details/Specifics: NPP Stored Mission Data (SMD) for REV 75133 was not received, GSE investigating. Data recovery will be attempted on the next available pass.

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