Topic: GOES-16 ABI/SUVI/EXIS Outage for Spacecraft Maintenance scheduled for April 20, 2021 

Date/Time Issued: April 15, 2021 1958 UTC 

Product(s) or Data Impacted: GOES-17 ABI, SUVI, and EXIS. GLM excessive false events. 

Date/Time of Initial Impact: April 20, 2021 2250 UTC 

Date/Time of Expected End: April 20, 2021 2320 UTC 

Length of Event: approximately 30 minutes 

Details/Specifics of Change:

A spacecraft maintenance maneuver will be performed on GOES-16 as soon as it can safely be performed. The first potential opportunity to perform this maneuver will occur on Tuesday, April 20, 2021. From 2250-2320 UTC on April, 20, 2021, ABI, SUVI, and EXIS will experience a data outage, GLM may have excessive false events and “throttle-limited”. After the maneuver, all instruments and products will resume nominal production and distribution. 

All ABI channels may experience navigation and product quality degradation for a period of time up to 30 minutes due to the Kalman filter reset. 

In the event that the Maintenance cannot be safely performed on Tuesday, April 20, 2021, the activity will be pushed. Only one of the dates and times will be used as soon as safely possible. All possible outage periods are provided for transparency. The backup dates and times are as follows:

Wednesday:
April 21, 2021: 1050 – 1120 UTC outage
OR
April 21, 2021: 2250 – 2320 UTC outage
OR
Thursday (Times of outages have not been determined yet):

April 22, 2021: Possible start time of 0830 UTC
OR
April 22, 2021: Possible start time of 2030 UTC 

If the activity date slips a notification update will be sent with additional detail of expected outage times. 

Please note: This activity is not subject to Critical Weather Day 

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

Web Site(s) for applicable information: See https://www.ospo.noaa.gov/Operations/messages.html for this and other satellite related messages. 

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