Update #2 : This activity is postponed until a TBD date and time. A new notification will be sent when the activity dates/times have been determined.

Update #1: Details/Specifics of Change has been updated to show GLM has been added to the data outage

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

Date/Time Issued: April 19, 2021 1845Z 


Product(s) or Data Impacted: GOES-16 ABI, SUVI, EXIS, and GLM.


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


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


Length of Event: approximately 30 minutes


Details/Specifics of Change:

A spacecraft maintenance maneuver will be performed on GOES-16 when it can be safely 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, EXIS, and GLM will experience a data outage. 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 pressure stabilization is not reached the activity may 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:



April 21, 2021: 1050 – 1120 UTC outage


April 21, 2021: 2250 – 2320 UTC outage




Thursday (Times of outages have not been determined yet):

April 22, 2021: Possible start time of 0830 UTC


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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