Wind detectives: direction and speed

Meet a moving mystery

You cannot usually see air itself, but you can see a flag stretch or leaves move. These are clues to wind. Wind is air in motion. Today we will ask two different questions: where is the air coming from, and how fast is it moving?

The name tells you from

Weather reports name wind for the direction it comes from. A west wind travels from west toward east. That word from matters. The wind is not announcing where it booked its holiday. It is telling us where the moving air is arriving from.

Different tools, different clues

A wind vane indicates where wind comes from. A cup anemometer measures wind speed. A windsock stretches downwind and gives a visual clue about the flow. These tools do not all point or work the same way, so identify the tool before reading it.

Read a practice record

Our fictional records show average speed and a gust value for three observation periods. A gust is a brief increase in wind speed, not the usual speed throughout the period. Include units and times. A number without that context can leave your weather notebook guessing.

Pause: follow the arrow

An arrow shows air traveling from west toward east. Pause and name this wind using the weather convention. Is it a west wind or an east wind? Then choose the tool that measures speed rather than direction. Use the word from in your explanation.

Solve the wind clue

It is a west wind because it comes from the west. An anemometer measures speed. A vane answers the direction question. Fun fact: a windsock stretches away from the direction the air comes from, so it is easy to reverse the name if you forget the convention.

Good measurements need a place

A sheltered corner and an open field can have different winds at the same time. Record the place, time, height, units, and tool. Repeat observations from the same safe spot for a useful comparison. A nearby wall can change the flow without changing the whole regional forecast.

Keep your investigation safe

Never go outside in dangerous winds or thunderstorms to collect a measurement. Use indoor practice data or an adult-approved observation in calm, safe conditions. Follow official local warnings. Continue to the worksheet to name winds, choose tools, and separate an average from a gust.