Topic: GOES-16 GLM Laser Beacon Test

Date/Time Issued: September 7, 2018 2035 UTC

Product(s) or Data Impacted: M-BGOES-16 GLM L2 data

Date/Time of Initial Impact: M-BSeptember 11, 2018 0100 UTC (event 1)

September 17, 2018 0100 UTC (event 2)

Date/Time of Expected End: M-BSeptember 14, 2018 1700 UTC (event 1)

M-B September 21, 2018 1700 UTC (event 2)

Length of Outage/Event: M-BIntermittent, see details below.

Details/Specifics of Change: During this test period, GLM lightning signals may be seen at or near the laser beacon sites near Greenbelt, MD (ground coordinates of 39d 01' 14" N 76d 49' 40" W; about 10 miles northeast of Washington, DC) and Monument Peak, CA (ground coordinates of 32d 53' 30" N 116d 25' 22" W; about 50 miles east of San Diego, CA).


During the test period, GLM signals may appear as short (5-10 minute) illuminations over 1 hour periods within three test windows: 01-04 UTC, 04-07 UTC, and 14-17 UTC. This will be repeated daily between September 11-14 and again between September 17-21 until the test results are satisfied. The test is weather-dependent at both sites.


Contact Information for Further Information: ESPC Operations at or 301-817-3880


Web Site(s) for applicable information:

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