Topic: GOES-17 (West) Geostationary Lightning Mapper Degradation

Date/Time Issued: December 12, 2022 2135 UTC

Product(s) or Data Impacted: GOES-17 GLM

Date/Time of Initial Impact: December 13, 2022 1900 UTC

Date/Time of Expected End: December 15, 2022 0900 UTC

Length of Outage: Approximately 1 day and 14 hours

Details/Specifics of Change: Due to scheduled software maintenance on the GOES-R Ground System, GOES-17 GLM processing will undergo an image navigation and registration reset. Due to this, there will be a period of approximately 38 hours where GLM navigation will be degraded. Errors of up to 25 km are possible during this time.

This planned maintenance will be deferred if a critical weather day is scheduled.

Contact Information for Further Information: Stephen Superczynski at stephen.superczynski@noaa.gov; 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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