storm cone

Millie's evidently seen him with the slates coming off the roof and the storm cones flying.

Storm cones hoisted.

Storm Cone is a cinder cone in northern British Columbia, Canada.

In spite of the storm cones fluttering in their heads, the alarms and whistles and horns going off all over the ship that somehow they could hear right through the soundproof decks-because their years here had better senses than their ears did-both men had their minds on something else entirely.