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A wind gust or just gust is a brief, 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. [1] Generally, winds are least gusty over large water surfaces and most gusty over rough land and near high buildings. [2]
The National Weather Service also relays messages for non-weather related hazardous events in text products and NOAA Weather Radio broadcasts: [54] [55] 911 telephone outage emergency TOE – Issued when 911 telephone service experiences a network outage over a geographic area or telephone exchange. Alternative phone numbers in which to reach ...
A short burst of high speed wind is termed a wind gust; one technical definition of a wind gust is: the maxima that exceed the lowest wind speed measured during a ten-minute time interval by 10 knots (19 km/h; 12 mph) for periods of seconds.
In Canada, reference wind pressures are used in design and are based on the "mean hourly" wind speed having a probability of being exceeded per year of 1 in 50. The reference wind pressure q is calculated using the equation q = ρv 2 / 2 , where ρ is the air density and v is the wind speed.
Most commonly, the meaning of "DW" in text is "don't worry." (Doctor Who or Arthur fans everywhere may disagree.) This meaning applies to social media platforms such as Facebook and Instagram as well.
A variety of models exist for gusts [3] but only two, the Dryden and von Kármán models, are generally used for continuous gusts in flight dynamics applications. [2] [4] Both of these models define gusts in terms of power spectral densities for the linear and angular velocity components parameterized by turbulence length scales and intensities.
In any given post or text message, you might come across abbreviations and terms like IB, YKWIS, BSF, OOMF and DNI. Confused about DNI's meaning , however? You're not alone.
When TIME’s photo department got together to create our annual list of the year’s top 10 photos, we first had to tackle the definition of an influential photo. Because those images gained so ...