Definitions
There are 3 meanings of the phrase
Air Alert.
Air Alert - as a noun
The time period during which military and civilian agencies are prepared for an enemy air attack
The condition in which combat aircraft are airborne and ready for an operation
Example: "Aircraft in the mideast are on air alert"
The warning signal that begins a period of preparation for an enemy air attack
Example Sentences
"During an air alert, citizens are advised to stay indoors."
"The air alert warned of potential thunderstorms in the area."
"An air alert was issued after a chemical spill in the vicinity of the neighborhood."
"During an air alert, schools might close early to ensure students' safety."
"The government urged people to be cautious and prepared during the air alert."