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This loop of GOES-8 visible includes 1-minute interval Super Rapid Scan Operations (SRSO) imagery during a 3-hour test over the tropical Atlantic Ocean on 15 April 1999. There are some gaps in the 1-minute interval scanning, so the loop will appear to have some small "jumps".
Features to note are the westward drift of the low cumulus clouds, the eastward drift of high cirrus clouds, the formation of a "lee cloud line" to the southwest of the island of Barbados, and subtle gravity waves propagating northward through the cumulus field around 55 West longitude.