red alert

noun

Definition of red alert 

: the final stage of alert in which enemy attack appears imminent broadly : a state of alert brought on by impending danger

Examples of red alert in a Sentence

The troops have been put on red alert. the paparazzi were on red alert for sightings of the hot new Hollywood couple

Recent Examples on the Web

Hawaii issued an aviation red alert Tuesday after the Kilauea volcano spewed a plume of ash into the air, with authorities warning the volcano could become more explosive. Casey Quackenbush, Time, "Hawaii on 'Red Alert' After Huge Ash Cloud Bursts From Kilauea Volcano," 16 May 2018 Or someone loses their nerve, putting the Jennings on red alert. Joshua Rivera, GQ, "Now That It's Over: The Americans," 31 May 2018 The central government issued red alerts for landslides in two mountain villages of northwestern Taiwan’s Hsinchu county, effective Wednesday. Washington Post, "Typhoon Maria barrels into China after pounding Taiwan," 12 July 2018 The central government issued red alerts for landslides in two mountain villages of northwestern Taiwan's Hsinchu county, effective Wednesday. Fox News, "Typhoon Maria barrels into China after pounding Taiwan," 11 July 2018 Newcastle United have been put on red alert as Italian reports have emerged that Belgian international Dennis Praet is free to leave Sampdoria this summer. SI.com, "Newcastle United on Red Alert as Belgian Midfielder Is Told He Is Free to Leave Serie A Club," 27 June 2018 So many red alerts have gone off at City Hall about the dysfunctional 911 center in recent years. Jason Williams, Cincinnati.com, "PX column: Cranley, Black, City Council share 'a lot of blame' for Kyle Plush death," 13 Apr. 2018 Explosions in Kilauea's crater sparked an aviation red alert due to risks the ash plume could blow into aircraft routes and damage jet engines. Author: Terray Sylvester, Anchorage Daily News, "‘Ballistic blocks’ shoot from Hawaii volcano, may mark start of violent eruptions," 17 May 2018 This is the first time that officials have put out an aviation red alert since Kilauea’s latest burst of activity began on Hawaii’s Big Island on May 3. Brigit Katz, Smithsonian, "Huge Burst of Ash and ‘Vog’ from Kilauea Puts Hawaii on Red Alert," 16 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'red alert.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of red alert

1941, in the meaning defined above

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Last Updated

20 Aug 2018

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Time Traveler for red alert

The first known use of red alert was in 1941

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More Definitions for red alert

red alert

noun

English Language Learners Definition of red alert

: a warning that there is great danger

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