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Cyclone Chris (2002) : ウィキペディア英語版 | Cyclone Chris
Severe Tropical Cyclone Chris was one of the most powerful cyclones to strike Western Australia on record, packing winds gusting up to 290 km/h (180 mph). ==Meteorological history==
Severe Tropical Cyclone Chris was first identified by the Australian Bureau of Meteorlogy (BoM) on 1 February 2002 as a weak area of low pressure over the Timor Sea.〔 Over the following day, the system tracked towards the southwest, eventually reaching a point roughly 340 km (210 mi) northwest of Broome, Western Australia, at which time it was classified as a tropical low. Situated in a region of moderate wind shear and good upper-level divergence, the system gradually intensified.〔 The low initially tracked towards the southeast in response to a monsoonal flow; however, this later shifted towards the south-southwest as system intensified. On 2 February, the low intensified into a minimal tropical cyclone.〔 Operationally, the system was not classified as a tropical cyclone until 3 February, at which time it was given the name Chris by the BoM.〔 Although already considered to have obtained gale-force winds by the BoM, the Joint Typhoon Warning Center (JTWC) assessed the system to have become a tropical depression late on 2 February.
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