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Dear Direct Broadcast user community,

Greetings from NOAA's Office of Satellite and Product Operations (OSPO). OSPO operates the JPSS satellites (S-NPP, NOAA-20, and NOAA-21) including their Direct Broadcast services.

We wanted to let you know that S-NPP's Direct Broadcast is currently OFF due to a spacecraft geolocation anomaly. Any S-NPP data you may have received from observations 22:15z or later on Nov. 2 should not be used in any operational decisions, models, or forecasts.

Because S-NPP is the tertiary satellite in the JPSS constellation, recovery from this anomaly won't begin until Monday, Nov. 4. S-NPP Direct Broadcast will remain OFF at least until then. Please read the Notice below for further details.

If you have any questions about this anomaly or any other aspect of JPSS Direct Broadcast services, please contact:

Toby Hutchings, Direct Readout Program Manager, NOAA/NESDIS/OSPO <toby.hutchings@noaa.gov>
John Evans, LEO Data Operations Manager, NOAA/NESDIS/OSPO <john.d.evans@noaa.gov>

Update #1: S-NPP data recovery activities are planned for no earlier than November 7, 2024. PDA Ops subscriptions and High Rate Data (HRD) will be re-enabled once Cal/Val teams verify that S-NPP products meet mission specifications.

Topic: S-NPP Data Outage

Date/Time Issued: November 4, 2024 2215Z

Product(s) or Data Impacted: All S-NPP products

Date/Time of Initial Impact: November 2, 2024 2215Z

Date/Time of expected end Time: TBD

Duration: TBD

Details: Starting around 2215Z on November 2, 2024, S-NPP’s geolocation capabilities entered into a degraded state. Operations will coordinate spacecraft recovery activities beginning Monday, November 4, 2024. Data assessment by Cal/Val teams will subsequently follow to ensure S-NPP products meet mission specifications.

NOAA does not recommend using S-NPP Products from observations taken after 2215Z on November 2, 2024 for operational purposes. PDA OPS subscriptions for all S-NPP science products were disabled at 0100Z on November 3, 2024. High Rate Data (HRD) was also disabled at 01:18z on November 3, 2024.

The NOAA-21 and NOAA-20 satellites continue to provide science data as the primary and secondary satellites, respectively, within the JPSS Constellation. Further updates will be posted, as needed.

Product Outage/Anomaly: Update #2: S-NPP Data Outage - Issued: November 8, 2024 1653Z

Update #2: Operations recovered the S-NPP spacecraft to a valid geolocation state at ~17:20 UTC on November 6, 2024. Cal/Val teams have confirmed that all S-NPP Science products are meeting mission specifications and ready for operational use, effective 17:20 UTC November 6, 2024.

All S-NPP Science products will be enabled on PDA OPS at 16:30 UTC on November 8, 2024. S-NPP High Rate Data (HRD) will be enabled at 18:15 UTC (Rev #67538) on November 8, 2024. Direct Broadcast (DB) users can use the equivalent S-NPP science Community Satellite Processing Package (CSPP) LEO products for operations.

This concludes the S-NPP spacecraft anomaly.