There was a deep rumble, and then the feedback noise dropped off to a low howl.

The wind had increased in velocity and was now a low, angry howl.

A low howl rose in pitch until they could hear it clearly over the rush of the water.

In the distance, there was the low mournful howl of sirens.

Somewhere in the mid sky a much greater force awoke with a low howl.

Clark heard the screams inside and out over the low howl of the miniguns.

A rush of wind pushed against the windows, sending up a low howl.

From off in the depths of the forest came a long, low howl, almost an amused sound.

Then it lifted its long muzzle and gave one low howl, like a dog in trouble.

There was no response, only a low howl whistling across the abyss.