Update #1: As of 16:38:36z (June 28, 2022), engineering was able to successfully execute all commanding activities to restore the S-NPP VIIRS instrument to a nominal state. Please note that while Science and telemetry data may be available from the VIIRS instrument, tuning and product quality checks could take up to two days. Direct Broadcast users should be aware that while this data may be available on HRD, it should not be used operationally until it is verified by the Cal/Val teams. An update will be posted once all verification activities are completed.

Topic:  S-NPP VIIRS Instrument issue

Date/Time Issued:  June 28, 2022  1712Z

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

Date/Time of Initial Impact:  June 28, 2022 03:41Z

Date/Time of expected end Time: TBD

Length of Outage: TBD

Details/Specifics of Change:  During Rev 55272 (AOS 04:43:32Z), Operations received multiple VIIRS YH alarms indicating S-NPP VIIRS experienced an anomaly and the instrument entered an anomalous state (single board computer lockup suspected). Engineering has been contacted and is investigating. All science and telemetry data will not be available until the instrument is restored to an operational state. All missed data will not be recoverable. The NOAA-20 VIIRS instrument will continue to provide all the primary VIIRS data needs.

Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov or 301-817-3880

Web Site(s) for applicable information: N/A

Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov and 301-817-3880

Web Site(s) for Applicable Information: N/A

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