GOES-16 was put into Mode 4 (Continuous Full Disk Mode) the afternoon of 19 August through the evening of the 20th. Mode 4 includes 5-min imagery across the full disk (no 1-min sectors) as opposed to 15-min imagery. This provides a great opportunity to observe the evolution of features outside of the CONUS (which benefits from 5-min imagery regardless of mode). Figure 1 depicts a developing low in the far south Pacific Ocean.

Figure 1: 20 August 2017 GOES-16 VIS. Full res: https://satelliteliaisonblog.files.wordpress.com/2017/08/20170820_south2_overlay.gif

-Bill Line, NWS

“The GOES-16 data posted on this page are preliminary, non-operational data and are undergoing testing. Users bear all responsibility for inspecting the data prior to use and for the manner in which the data are utilized.”