false alarm

(redirected from False alarms)
Also found in: Dictionary, Thesaurus, Legal, Idioms.

false alarm

[¦fȯls ə′lärm]
(electronics)
In radar, an indication of a detected target even though one does not exist, due to noise or interference levels exceeding the set threshold of detection.
References in periodicals archive ?
This year so far, since relocating several prisoners, there have been only three fires and 19 false alarms.
However, fire chiefs have measures in place to tackle the problem and say regular culprits for false alarms - The Thistles shopping centre and Stirling University - have taken the service's advice on board.
Expediting emergency response helps save lives, and reducing false alarms frees up first responders for true emergencies.
The report, presented to members of the North Wales Fire and Rescue Authority, also found that of 11,727 false alarms attended since 2014, just over half (6,327) were as a result of automatic fire alarm systems being triggered.
On average, 75% of tornado warnings in the United States are false alarms. The southeastern United States experiences frequent, short-lived tornadoes and the highest tornado fatalities in the nation.
He said the service responded to 96 rescue calls and 22 false alarms from residents.
By current ordinances and common practice, the department will respond to three false alarms for free each month and then start billing for four or more.
Firefighters dealt with 454 false alarms in Renfrewshire in just three months.
The Western Regional Command of the Ghana Police Service has warned the public, especially residents in Sekondi-Takoradi, to stop raising false alarms about kidnappings and that the police will deal ruthlessly with anyone caught in the act.
Zurich researchers at the Swiss Federal Institute of Technology in Zurich have used machine learning to distinguish false alarms from medically relevant alarms in intensive care units.
Other false alarms can include incidents where someone accidentally sets off an alarm, an alarm is triggered by burnt cooking, or a 999 call is made incorrectly but with good intent.
Of those, over 90% are false alarms. This puts an extreme burden on local law enforcement and fire agencies and endangers our communities.