Update #1 This anomaly has been resolved with required short GLM outages as follows. G-18/J362 1857Z thru 1907Z and G-16/J362 1917Z thru 1927Z.

 

Topic: GOES-16, 18 Lightning Detection and derived products delivered to AWIPS, GRB, PDA

 

Date/Time Issued: December 28, 2023 2020Z

 

Product or Data Impacted: GOES-16, 18 Lightning Detection and derived products All Scenes delivered to AWIPS, GRB, PDA.

 

Date/Time of Initial Impact: November 28, 2023 1710Z

 

Date/Time of Expected End: December 28th 1927Z

 

Length of the Outage/Event: 30 days 2hours 17minutes

 

Details/Specifics of Change: GOES-16, 18 Lightning Detection and derived products All Scenes delivered to AWIPS, GRB, PDA. On November 28 at 1711Z for GOES-East (GOES-16) and 1751Z for GOES-West (GOES-18), the GLM LCFA and gridded products began showing signs of degradation. The issue is causing false lightning events to be detected in random fashion across the entire Field of View (FOV). This presents as a speckling phenomenon when looking at animations of the GLM products. Currently, the number of false detections is greater for GOES-18 than for GOES-16. The source of the product degradation is currently unknown, however an investigation into the root cause is underway. Further updates will be provided as information becomes available. 

 

 

Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov or 301-817-3880 24x7 or goes-r.product.engineering.group@noaa.gov during normal business hours

 

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

 

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