Hi Tim, this has been done the past three days for "algorithm update testing". Today was the final day of testing. See message below for details.
Bill Line
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Topic: GOES-16 ABI mode change scheduled for June 25-27, 2018
Date/Time Issued: June 22, 2018 1710 UTC
Product(s) or Data Impacted: GOES-16 ABI products
Date/Time of Initial Impact: June 25, 26, 27, 2018 1600 UTC
Date/Time of Expected End: June 25, 26, 27, 2018 1700 UTC
Length of Event: One hour each day for three days
Details/Specifics of Change:
Starting on June 25, 2018, ABI Flex Mode (mode 3) will be replaced with one hour of Continuous Full Disk (mode 4) from 1600-1700 UTC for algorithm update testing. This will be repeated on June 26 and June 27. ABI Flex Mode (mode 3) will resume at 1700 UTC each day.
In the event that a Critical Weather Day is declared, this testing will be cancelled and will resume on the next day after the declaration is lifted.