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Wind speed on the Beaufort scale is based on the empirical relationship: [6] v = 0.836 B 3/2 m/s; v = 1.625 B 3/2 knots (=) where v is the equivalent wind speed at 10 metres above the sea surface and B is Beaufort scale number.
Wind speeds over 99 knots are extracted by subtracting 50 from the direction and adding 100 to the speed. Thus, for example, the wind forecast for Abilene (ABI) at 30,000 feet, shown above as 7603, indicates a forecast wind of 260 degrees at 103 knots (76-50=26 or 260, and speed became 100+03=103).
An anemometer is commonly used to measure wind speed. Global distribution of wind speed at 10m above ground averaged over the years 1981–2010 from the CHELSA-BIOCLIM+ data set [1] In meteorology, wind speed, or wind flow speed, is a fundamental atmospheric quantity caused by air moving from high to low pressure, usually due to changes in ...
The brutal wind and torrential rainfall of Hurricane Milton that killed 16 people in Florida this week were worsened by human-caused climate change, a team of international scientists said on Friday.
The January 2025 United States blizzard, unofficially nicknamed Winter Storm Blair by The Weather Channel, is an ongoing significant meteorological event that produced a tornado, [1] [2] an ice storm, a blizzard, [3] and a winter storm coupled with a arctic blast that impacted the northwestern United States, southwestern Canada, the Great Plains, and the Midwest region.
Wind speeds over 75 miles per hour are classified as “hurricane force,” capable of pushing moving vehicles off the highway, overturning mobile homes and peeling off roofs. The average wind ...
Compared to over water, maximum sustained winds over land average 8% lower. [12] More especially, over a city or rough terrain, the wind gradient effect could cause a reduction of 40% to 50% of the geostrophic wind speed aloft; while over open water or ice, the reduction is between 10% and 30%. [8] [13] [14]
Considerable – to be used when hail of 1.75 inches (4.4 cm) or larger and/or winds at or above 70 miles per hour (110 km/h) is indicated by radar or observed. Destructive – to be used when hail of 2.75 inches (7.0 cm) or larger and/or winds at or above 80 miles per hour (130 km/h) is indicated by radar or observed.