'air raid warning' is correct and usable in written English.
You can use it when you want to describe an announcement or alert regarding an imminent airstrike. For example: "The loudspeakers blared an air raid warning, and everyone rushed to the shelter."
She had run out of the house, assuming the noise was an air raid warning.
They never heard an airplane or an air raid warning.
Meanwhile, the cable channels went to Baghdad every time an air raid warning sounded.
The witness, an activist working with an air raid warning service in opposition areas, said the jet struck at about 11am (0800 GMT) at the northern edge of the town, causing damage but no known casualties.
As the air raid warning sounded on 3 March 1943, Vera and her mother Lillian routinely gathered their bundles of bedding and made their way to Bethnal Green Tube, a brand new extension of the Central line that had yet to serve as a station |but for the previous two years had become a much-needed air raid shelter with 5,000 beds.
An electrically controlled air raid warning system was set up and ack-ack guns sites prepared.
Air raid warnings were sounded in Kent by siren-equipped "Paul Revere cars".
She recalled the eerie sound of air raid warnings and bombs falling on arrival in London.
The two boys and their parents spent hours in the basement during air raid warnings in the Iran-Iraq war.
It was also tied into the four radar stations that surrounded the islands and was responsible for issuing air raid warnings.
In Lietuvos Zinios, Vytautas Landsbergis, Lithuania's first post-independence leader, says the "escalating war against Ukraine" reminded him of hearing air raid warnings on Radio Warsaw as a child at the start of World War Two.
