Date/Time of Expected End: September 24, 2016 0044 UTC
 
Length of Outage: 1 hour for maneuver (2023 UTC - 2129 UTC); 27 hours and 15 minutes for recovery period (September 22, 2016 2130 UTC - September 24, 2016 0044 UTC).
 
Details/Specifics of Change: GOES-15 (GOES-West) will be performing a Yaw Flip Maneuver for one hour on Thursday, September 22, 2016 from 2023 UTC through 2129 UTC.  There is no back up date for this maneuver.  It will need to be conducted during a critical weather day.  A recovery period will follow immediately and last until September 24, 2016 at 0044 UTC.  During the recovery period, routine imager and sounder scans will be performed; however, the navigation may still be out of specifications until the end of the recovery period. No GOES-15 (GOES-West) RSO requests will be approved during the maneuver/maneuver recovery period.
 
If NWS Regions have any operational concerns, please contact the NCEP SDM (301) 683-1500 at least 6 hours prior to the maneuver time. There is no backup date for the Yaw Flip.
 
GOES-13 (GOES-East) will perform Full Disk coverage from 2015-2144 UTC on September 22, 2016.  The GOES-East Full Disk coverage is subject to change should NWS call for Rapid Scans to support Critical Weather Status.  
 
On September 23, 2016 0800-1100 UTC, the following images and soundings will be shortened or replaced due to navigation constraints during eclipse.
 
Images:
0815 UTC PACUS replaced with 0819 UTC SUBCONUS
0845 UTC PACUS replaced with 0849 UTC SUBCONUS
0900 UTC Full Disk replaced with 0900 UTC Full Disk short
0945 UTC PACUS replaced with 0949 UTC SUBCONUS
1015 UTC PACUS replaced with 1019 UTC SUBCONUS
1045 UTC PACUS replaced with 1049 UTC SUBCONUS
 
Soundings:
0801 UTC Limited CONUS replaced with 0801 UTC short CONUS
0924 UTC N. Pacific replaced with 0924 UTC Limited N. Pacific
1024 UTC N. Pacific replaced with 1024 UTC Limited N. Pacific