1999 North Indian Ocean cyclone season
cyclone season in the North Indian ocean
The 1999 North Indian Ocean cyclone season was an extremely active and deadly tropical cyclone season in recent times. It 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 October-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 above-average number of cyclonic storms but there was a very above-average number of intense cyclones. In May, a Category 3 cyclone struck Pakistan, leaving 6,400 people dead.
The public source identifies “1999 North Indian Ocean cyclone season” as cyclone season in the North Indian ocean. This brief keeps that definition visible, then builds a research path around North, Indian and Ocean.
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Place names and jurisdictional language are key evidence: both can reveal earlier catalogue descriptions and overlooked record series. The source revision retrieved here is dated Sep 3, 2026. The linked authority identifier is Q4594972. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1999.
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This entry incorporates text from “1999 North Indian Ocean cyclone season” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.