Keening

The keening sound of the ambulance siren signaled a tragedy unfolding on the streets.

As the fog rolled in, a keening foghorn warned ships of the treacherous rocks ahead.

The distant keening of the siren warned of an approaching storm.

The air raid siren's keening pierced through the city, signaling imminent danger.

The mournful keening of the women in black veils set a somber tone for the entire funeral procession.

The keening sound of the ambulance siren pierced through the busy city streets.