Definition
A series of weather satellites operated by the U.S. National Oceanic and Atmospheric Administration (NOAA) that orbit roughly 22,236 miles above the equator at the same rotational speed as the Earth, allowing each satellite to remain fixed over one location. GOES satellites continuously image clouds, storms, lightning, water vapor, and surface conditions across the Western Hemisphere, supplying the imagery used in aviation weather products.
Plain English
A weather satellite that hovers over the same spot above the Earth and constantly takes pictures of the weather below. Most of the cloud and storm imagery pilots see in weather briefings comes from GOES.
Context Anchor
Seen in aviation weather information, satellite imagery discussions, weather briefings, and FAA acronym lists.
Derivation
Geostationary means the satellite stays over one fixed point on Earth — 'geo' (earth) and 'stationary' (not moving relative to it). It looks motionless from the ground because it orbits at the same speed the Earth rotates.
Why Pilots Care
GOES imagery supplies current cloud, thunderstorm, and visibility information used in preflight planning and enroute weather decisions.
Grounding Statement
Picture a camera parked in space above the equator, never drifting, taking a fresh picture of the weather every few minutes — that's a GOES satellite.
Intuition Check
GOES is not sitting still in space. It is moving around Earth in a way that makes it appear fixed over the same region from the ground.
Example Sentence 1
The thunderstorm imagery on the briefing came from a GOES satellite, so the pilot could see how the cells had developed over the last hour.
Example Sentence 2
Pilots checked GOES satellite loops to confirm that fog had cleared before takeoff.