blue alert

American  

noun

1. (in military or civilian defense) an alert following the first, or yellow, alert, in which air attack seems probable.

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Example Sentences

Chinese weather forecasters kept orange alerts for blizzards in several areas, while China's National Meteorological Center issued an orange alert for blizzards and a blue alert for cold waves and strong wind, Global Times reported.

From Reuters • Nov. 6, 2023

China's meteorological authorities on Sunday renewed a blue alert, the lowest of its four-tier warning system, for rainstorms in regions including Guangxi, Guangdong, Hainan, Henan and Hubei.

From Reuters • Jun. 11, 2023

Officials issued a blue alert shortly before midnight, informing the public that a law enforcement officer had been wounded on duty.

From Seattle Times • Feb. 23, 2022

The says that the public has hit out at the Beijing municipal authorities for issuing only a blue alert when the city was already covered in heavy smog.

From BBC • Feb. 21, 2014

Phil, we've only been here a month, and—" "And if I hadn't pulled a blue alert," he interrupted, "we wouldn't even have the residentials built yet.

From The Test Colony by Marks, Winston K.