as in watch
the state of being constantly attentive and responsive to signs of opportunity, activity, or danger
the paparazzi were on red alert for sightings of the hot new Hollywood couple
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Recent Examples of red alert
In Tarragona, a city in southern Catalonia roughly midway between Barcelona and Valencia, school classes were canceled after a red alert for intense rainfall was issued.
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David Faris, Newsweek, 4 Nov. 2024
Authorities in Spain have halted commuter rail services around Barcelona amid a red alert for extreme rain, following deadly floods around Valencia that have already claimed 217 lives.
—David Faris, Newsweek, 4 Nov. 2024
Three regions, including Andalucia and Valencia, were under red alerts on Wednesday.
—Kevin Shalvey, ABC News, 30 Oct. 2024
The Valencian regional government is being criticized for not sending out flood warnings to people’s mobile phones until 8 p.m. on Tuesday, when the flooding had already started in some parts and well after the national weather agency had issued a red alert for heavy rains.
—Alberto Saiz, Los Angeles Times, 31 Oct. 2024
See all Example Sentences for red alert 
David Faris, Newsweek, 4 Nov. 2024
Authorities in Spain have halted commuter rail services around Barcelona amid a red alert for extreme rain, following deadly floods around Valencia that have already claimed 217 lives.
—David Faris, Newsweek, 4 Nov. 2024
Three regions, including Andalucia and Valencia, were under red alerts on Wednesday.
—Kevin Shalvey, ABC News, 30 Oct. 2024
The Valencian regional government is being criticized for not sending out flood warnings to people’s mobile phones until 8 p.m. on Tuesday, when the flooding had already started in some parts and well after the national weather agency had issued a red alert for heavy rains.
—Alberto Saiz, Los Angeles Times, 31 Oct. 2024
See all Example Sentences for red alert
Recent Examples of Synonyms for red alert
Noun
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Viewers of Today over the years could say the same about Kotb, who became a morning TV star under their watch, now leaving the franchise to forge a new path in an uncertain media climate.Eric Deggans, NPR, 10 Jan. 2025
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The brand began selling watches at around $200 USD.Lilian Raji, Forbes, 10 Jan. 2025
Noun
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Kansas residents received an emergency alert shortly after 6 a.m. Monday advising against travel, as many state and federal highways remain closed due to dangerous conditions.Kendrick Calfee, Kansas City Star, 6 Jan. 2025
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North Texas, including Dallas-Fort Worth, is on alert for wind chills ranging from 5 to 10 degrees, which could cause frostbite in minutes.Kevin Lynn, Newsweek, 6 Jan. 2025
Noun
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Educate and Empower Employees: Internal vigilance can be a company’s first line of defense.HEC Paris Insights, Forbes, 10 Jan. 2025
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This alert serves as a reminder of the growing sophistication and accessibility of these technologies and the urgent need for vigilance in protecting ourselves from potential scams.Fox News Staff, Fox News, 8 Jan. 2025
Thesaurus Entries Near red alert
Cite this Entry
“Red alert.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/red%20alert. Accessed 18 Jan. 2025.
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