false alarm


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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 ?
At a meeting of Stirling Council's public safety committee last Thursday, Scottish Fire and Rescue Service's senior officer for Stirling, Clackmannanshire and Fife, Roddie Keith, said the overall figure for false alarms in Stirling district remained "stubbornly high".
'False alarms are a major challenge for the security industry because they strain resources at police and fire departments nationwide.
Lastly, after receiving a tornado false alarm, more than half of the participants reported being more likely to listen to future warnings and to follow directions; and 55% of them would seek additional information before deciding whether to take action during future warnings.
It would leave in place the first three, free, false alarms and then charge for the next three police responses.
But the incident gladdened the group of Palm Springs firefighters who rushed to the tarmac and fortunately as it was a false alarm they grabbed the opportunity to click pictures with the Aquaman star.
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.
Of those, over 90% are false alarms. This puts an extreme burden on local law enforcement and fire agencies and endangers our communities.
The White House issued a statement on the false alarm, noting that United States President Donald Trump had been briefed on the incident.
The false alarm that went out included sirens, cell phone alerts and radio and television warnings.
It took only 15 minutes for that false alarm to be corrected - and in the meantime, public order prevailed.
HAWAII - THIS IS A FALSE ALARM. THERE IS NO INCOMING MISSILE TO HAWAII.