The Beaufort wind speed scale designed to help us record the force of our weather illustrated from the calm waters of wind speed 0 up to the stormy seas of hurricane force 10.

The Beaufort wind speed scale designed to help us record the force of our weather illustrated from the calm waters of wind speed 0 up to the stormy seas of hurricane force 10.

So how strong is 20mph wind anyway? Land & marine wind scale.

So how strong is 20mph wind anyway? Land & marine wind scale.

Make this wind detector craft with your kids to measure wind speed with the naked eye using the Beaufort Scale.

Make this wind detector craft with your kids to measure wind speed with the naked eye using the Beaufort Scale.

One of the Beaufort scale series - Siné MacPherson

One of the Beaufort scale series - Siné MacPherson

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