Topic: GOES-16 Laser Beacon Test

Date/Time Issued: September 21, 2018 1730 UTC

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

Date/Time of Initial Impact: M-BSeptember 24, 2018 1900 UTC

Date/Time of Expected End: M-BSeptember 29, 2018 0500 UTC

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).

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During the test period, GLM signals may appear as short (5-10 minute) illuminations. This will be attempted periodically over the specified time frame until the test results are satisfied. The test is weather-dependent at both sites.

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Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov or 301-817-3880

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Web Site(s) for applicable information:

Seehttps://www.ospo.noaa.gov/Operations/messages.html for this and other satellite related messages.

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