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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z weak gust When the maximum speed exceeds the average speed by 10 to 15 knots (19 to 28 km/h; 12 to 17 mph), the term WeakGust is used[Wikipedia] Relationships       Parents wind gust A WindGust is a sudden increase in the wind speed. It usually lasts for less than 20 seconds, briefer than a squall, which lasts minutes. A gust is followed by a lull (or slackening) in the wind speed. The average value of wind speed is generally measured over a period of 2 minutes before the meteorological observation according to the World Meteorological Organization. It is generally reported in METAR when the peak wind speed reaches at least 16 knots (30 km/h; 18 mph) and the variation in wind speed between the peaks and average wind is at least 9 to 10 knots (17 to 19 km/h; 10 to 12 mph).[Wikipedia] Show full definition (without tree view) Show full definition (with tree view)

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