| 1999 North Indian Ocean cyclone season | |
|---|---|
 Season summary map | |
| Seasonal boundaries | |
| First system formed | January 30, 1999 |
| Last system dissipated | December 10, 1999 |
| Strongest storm | |
| Name | BOB 06 (Most intense tropical cyclone in the North Indian Ocean on record) |
| • Maximum winds | 260 km/h (160 mph) (3-minute sustained) |
| • Lowest pressure | 912 hPa (mbar) |
| Seasonal statistics | |
| Depressions | 8, 2 unofficial |
| Deep depressions | 6, 2 unofficial |
| Cyclonic storms | 4, 1 unofficial |
| Severe cyclonic storms | 4 |
| Very severe cyclonic storms | 3 |
| Extremely severe cyclonic storms | 3 (record high, tied with 2019 and 2023) |
| Super cyclonic storms | 1 |
| Total fatalities | At least 16,485 total |
| Total damage | $5.446 billion (1999 USD) |
| Related articles | |
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.[1]
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 6,400 people dead. In October, two very intense cyclones struck eastern India within two weeks of each other with the latter becoming the most intense Northern Indian Ocean cyclone on record, leaving over 10,000 people dead and causing more than $5.4 billion (1999 USD) in damages.
- ^ "IMD Cyclone Warning Services: Tropical Cyclones". Archived from the original on May 29, 2009.
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