Warning the population includes sounding a general alarm using public warning sirens.
An emergency warning is a notification issued by a competent authority to warn a large section of the public of a dangerous event and to provide them with instructions. Emergency warnings are always broadcast on the radio. The authority issuing a warning can decide whether the warning should also be broadcast ...
Information about alarm signal:
https://pelastustoimi.fi/en/home-everyday-life/emergencies/alarm-signal