Wind Gauge

At 10 mph, you can feel wind on your face.

At 20 mph, small branches move.

At 30 mph, large branches move and wires whistle.

At 40 mph, whole trees bend.

THURSDAY takes its name from the Norse god Thor ("Thor's day"), who was famous for his thunder and lightning.

 - It was said that when Thor struck his mighty hammer, the thunder roared.