Topic: Update #2 GOES-16 (EAST) Geostationary Lightning Mapper Test
Date/Time Issued: February 23, 2021 0524Z
Product(s) or Data Impacted: GOES-16 GLM
Date/Time of Initial Impact: February 23, 2021 0515UTC
Date/Time of Expected End: February 25, 2021 1830UTC
Length of Outage: Multiple 1hr15min outages, one 24 hour degraded product period. See Details below.
Details/Specifics of Change: Starting on Tuesday February 23 at 0515UTC, GOES-16 GLM will perform testing to improve the data product. The outages and degradation period are listed below:
      February 23 0515-0630UTC: 1hr15min GLM outage
      February 23 1715-1830UTC: 1hr15min GLM outage
      February 24 0515-0630UTC: 1hr15min GLM outage
      February 24 1715-1830UTC: 1hr15min GLM outage
      February 24 1830 to February 25 1830UTC: 24 hour GLM degraded radiometric data
This testing will be postponed in the event of a critical weather day. Events will slip one business day, remaining at the same time of day, until they do not conflict with critical weather day.   

Contact Information for Further  Information: ESPC Operations at and 301-817-3880.     
Web Site(s) for applicable information: N/A     
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