It was announced today (11 Feb) that GOES-17 will become the operational GOES-West satellite tomorrow (12 Feb) at 1800 UTC. GOES-15 (previous GOES-West) will continue to operate from the 128W position through early July 2019. The GOES-17 GOES-West position is 137.2W. Figure 1 shows GOES-17 Full Disk (15-min) water vapor imagery from today.
Bill Line, NWS