General
warning yellow
What does warning yellow mean?
An air-defense warning condition indicating that a hostile attack by air is probable — a heightened but not imminent alert state, below 'warning red'.
""Air defense warning yellow — man your positions and stand by.""
Origin
US/NATO air-defense warning terminology; included among brevity/air-defense codes.
Frequently asked questions
What does "warning yellow" mean?
It's an air-defense warning that a hostile air attack is probable — a heightened alert state that sits below the more urgent "warning red."
How is "warning yellow" different from "warning red"?
Yellow means an attack is probable but not yet imminent; red means the attack is imminent or already in progress.
Where does the term come from?
It's part of US/NATO air-defense warning terminology used to signal the current level of air threat.
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