what does siren mean?

[Zappjays]

this: wiiiiiiiih wiiiiiiih, it's annoying, i want know what does it mean( i know how to turn it off)

[Mr.MayoMan]

disaster

[Zappjays]

thanks

[Delle(DK)]

when you hear it exit the ? circle on the map now.. Typical there will soon be a tesunami.
Unfortunatly nothing is safe from it not even on top of large hills or inside a hangar so ships or trucks parked will get hit. ( that is very annoying )

[jeremism30]

If you start a new game you can disable it.

[RadialVolcano27]

Theres a button on the sirens to disable them

[Booze_Rooster]

it means the siren is on. hope this helps.