alerts
a-lerts
verb
Makes someone aware of a danger, problem, or important fact.
"The system alerts users to suspicious activity."
noun
Warnings or signals of danger, a problem, or an important event.
"The weather service issued severe flood alerts."
Thesaurus
Synonyms: alerting, alarm, warning signal, alarum, argus-eyed, sleepless, lidless, wakeful, wide-awake, fly, vigilant, open-eyed
Antonyms: unalert, unvigilant, unwatchful