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Since 2009 the Hong Kong Observatory has divided typhoons into three different classifications: typhoon, severe typhoon and super typhoon. [20] A typhoon has wind speed of 64–79 knots (73–91 mph; 118–149 km/h), a severe typhoon has winds of at least 80 knots (92 mph; 150 km/h), and a super typhoon has winds of at least 100 knots (120 mph ...
In August 2006, Typhoon Saomai became the strongest typhoon on record to strike China, with a central pressure of 920 mbar (27 inHg) and winds of 215 km/h (134 mph) at its landfall in Zhejiang. It produced wind gusts of 293 km/h (182 mph) in Wenzhou. The typhoon killed 456 people and left more than US$4.2 billion in damage. [131]
While many of these storms form in the Atlantic basin, some systems or their remnants move through Mexico from the Eastern Pacific basin. The average storm total rainfall for a tropical cyclone impacting the lower 48 from the Atlantic basin is about 16 inches (410 mm), with 70–75 percent of the storm total falling within a 24-hour period.
During El Niño episodes, tropical cyclones tend to form in the eastern part of the basin, between 150°E and the International Date Line (IDL). [53] Coupled with an increase in activity in the North-Central Pacific (IDL to 140°W ) and the South-Central Pacific (east of 160°E ), there is a net increase in tropical cyclone development near the ...
The West Pacific is the most active and the north Indian the least active. An average of 86 tropical cyclones of tropical storm intensity form annually worldwide, with 47 reaching hurricane/typhoon strength, and 20 becoming intense tropical cyclones, super typhoons, or major hurricanes (at least of Category 3 intensity). [1]
In the peak of Atlantic hurricane season, words matter. And using the right ones at the right time can be the difference between alerting of a far-out rotating storm system to a nearer full-blown ...
In Navajo and Pinal counties, the rainfall damaged roads, bridges, sewers, and homes, which amounted to about $250,000 in repair work for the state of Arizona. [54] October 1972: Hurricane Joanne entered Arizona as a tropical storm before dissipating near Flagstaff. Many areas of the state received between 1 and 3 inches (25 and 76 mm) of ...
Between 1979 and 2016, typhoons increased in duration by two to nine hours and penetrated 30 to 190 kilometers farther inland, the researchers found. The study was published in the journal ...