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The 1999 North Indian Ocean cyclone season was an event in the annual cycle of tropical cyclone formation. The North Indian Ocean cyclone season has no official bounds, but cyclones tend to form between April and December, with peaks in May and November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean. The scope of this article is limited to the Indian Ocean in the Northern Hemisphere, east of the Horn of Africa and west of the Malay Peninsula. There are two main seas in the North Indian Ocean – the Arabian Sea to the west of the Indian subcontinent, abbreviated ''ARB'' by the India Meteorological Department (IMD); and the Bay of Bengal to the east, abbreviated ''BOB'' by the IMD. The official Regional Specialized Meteorological Centre in this basin is the India Meteorological Department (IMD), while the Joint Typhoon Warning Center releases unofficial advisories. The tropical cyclone scale for this basin is detailed on the right. On average, 4 to 6 storms form in this basin every season. The season produced an average number of storms but there was an above average number of intense cyclones. In May, a Category 3 cyclone struck Pakistan, leaving at 700 people dead or missing. In October, two very intense cyclones struck eastern India within two weeks of each other, leaving over 10,000 people dead and causing more than $4.5 billion (1999 US$) in damages. ==Storms== Five tropical cyclones were observed, making 1999 an average season. However, 4 reached Cyclone strength. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「1999 North Indian Ocean cyclone season」の詳細全文を読む スポンサード リンク
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