Tropical cyclone scales barometric pressure is low compared with its surroundings. Other classifications historically used include: cyclonic storm where the winds did not exceed force 10 on the Beaufort scale and a Cyclone where the winds are either force 11 and 12 on the Beaufort scale. Between 1924 and 1988, tropical cyclones were classified into four categories: depression, deep depression, cyclonic storms and severe cyclonic storms. However, a change was made during 1988 to introduce the category "severe cyclonic storm with core of hurricane winds" for tropical cyclones, with wind speeds of more than . During 1999 the categories Very Severe Cyclonic Storm
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