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Most typhoons form in a region in the northwest Pacific known as typhoon alley, where the planet's most powerful tropical cyclones most frequently develop. [36] When the subtropical ridge shifts due to El Niño, so will the preferred tropical cyclone tracks.
Tropical cyclones are known to form even when normal conditions are not met. For example, cooler air temperatures at a higher altitude (e.g., at the 500 hPa level, or 5.9 km) can lead to tropical cyclogenesis at lower water temperatures, as a certain lapse rate is required to force the atmosphere to be unstable enough for convection.
Depending on its location and strength, a tropical cyclone is referred to by different names, including hurricane, typhoon, tropical storm, cyclonic storm, tropical depression, or simply cyclone. A hurricane is a strong tropical cyclone that occurs in the Atlantic Ocean or northeastern Pacific Ocean , and a typhoon occurs in the northwestern ...
Why a typhoon? Typhoon does not have a clear origin. It may have a Greek root due to European influence, NOAA said. ... or κυκλόω (kuklóō, “go around in a circle, form a circle, encircle
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]
Occluded fronts form late in the cyclone life cycle near the center of the cyclone and often wrap around the storm center. Tropical cyclogenesis describes the process of development of tropical cyclones. Tropical cyclones form due to latent heat driven by significant thunderstorm activity, and are warm core.
2019 Typhoon Hagibis. Japan is one of the countries frequently hit by typhoons, with the nation giving its own names to particularly destructive storms.. Since records began in 1951, an average of 2.6 typhoons reached the main islands of Kyushu, Shikoku, Honshu and Hokkaido per year.
These classifications are Tropical Depression, Tropical Storm, Typhoon, and Super Typhoon. [18] The United States' Joint Typhoon Warning Center (JTWC) unofficially classifies typhoons with wind speeds of at least 130 knots (150 mph; 240 km/h)—the equivalent of a strong Category 4 storm on the Saffir–Simpson scale—as super typhoons. [19]