factsheet_9-weather_extremes_2022_2023.pdf
February 1967 to 17 March 1969. Extremes of wind Wind: the (horizontal) movement of air relative to the rotating surface of the Earth. The Met Office measures the wind speed in knots. The knot is defined as a speed of one nautical mile per hour. 1 knot = 0.51444 m s -1 = 1.15078 mile h -1 = 1.853 km