Cumulonimbus and aviation at this altitude, updraughts with speeds that can exceed . Such an updraught speed corresponds to the wind speed of a small hurricane. The speed can even exceed . The maximum number in the Beaufort scale is 12 ("hurricane force" wind) and is assigned to wind speeds of 64 knots or greater. If the Beaufort scale were extended, these updraughts would have a Beaufort number of 14 "in the vertical direction". The turbulence is then "extreme" at this altitude. Moreover, the diameters of the updraught columns vary between 2 km (air mass thunderstorm) and 10 km (supercell thunderstorm). The height
Mount Storm Wind Farm the AFL-CIO to use union labor in the construction of the facility. At the hearings for the permit, speakers in favor of the project included Walt Helmick, a member of the West Virginia Senate, Jeff Barger, the County Commissioner of Grant County, and Steve White a union leader. A study by the U.S. Fish and Wildlife Service concluded that the project posed little danger to local birds, clearing the way for construction. Mount Storm Wind Farm The Mount Storm Wind Farm is located 120 miles west of Washington, D.C. in Grant County, West Virginia. The wind farm includes 132 Gamesa