Topic: GOES-19 Yaw Flip Maneuver Scheduled for September 22, 2026
Date/Time Issued: September 15, 2026 1605 UTC
Product(s) or Data Impacted: All GOES-19 Products
Date/Time of Initial Impact: September 22, 2026 1550 UTC
Date/Time of Expected End: September 22, 2026 1755 UTC
Length of Outage: 2 hours 5 minutes
Details/Specifics of Change:
A yaw flip maneuver from the inverted to upright orientation will be performed for GOES-19 on September 22, 2026 from 1550 - 1755 UTC. During this period all instruments will experience a data outage, as detailed below. After the maneuver, all instruments and products will resume production and distribution.
Approximate outage times per instrument:
ABI Outage: 50 minutes (1630 UTC to 1720 UTC)
GLM Outage: 45 minutes (1630 UTC to 1715 UTC)
SUVI Outage: 60 minutes (1620 UTC to 1720 UTC)
EXIS Outage (validity flag set to "off-point”): 60 minutes (1620 UTC to 1720 UTC)
SEISS Outage: 40 minutes (1640 UTC to 1720 UTC)
MAG Outage: 30 minutes (1640 UTC to 1710 UTC)
CCOR-1 Outage: 125 minutes (1550 UTC to 1755 UTC)
Following the yaw flip, all ABI channels will experience navigation and product quality degradation for up to 30 minutes after the outage due to the Kalman filter reset. Small navigation errors in GLM events may occur and diminish over the course of a week.
Additionally, customers using a linear-polarized receiver for High-Rate Information Transmission / Emergency Managers Weather Information Network (HRIT / EMWIN) or Data Collection System Direct Read-out Ground Stations (DRGS) will notice a temporary loss of the data feed during the yaw flip. As the GOES-19 satellite nears its upright orientation, the signal is expected to normalize and return.
Please note: The yaw flip will be postponed in the event of a critical weather day. It will slip one business day, remaining at the same time of day, until it does not conflict with a critical weather day.
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