The 1983 North Indian Ocean cyclone season was the least active in 27 years. It was a below average season. A season has no official bounds but cyclones tend to form between April and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean. There are two main seas in the North Indian Ocean—the Bay of Bengal to the east of the Indian subcontinent and the Arabian Sea to the west of India. The official Regional Specialized Meteorological Centre in this basin is the India Meteorological Department (IMD), while the Joint Typhoon Warning Center (JTWC) releases unofficial advisories. An average of five tropical cyclones form in the North Indian Ocean every season with peaks in May and November. Cyclones occurring between the meridians 45°E and 100°E are included in the season by the IMD.
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Season summary
Systems
Depression ARB 01 A tropical depression formed just offshore of Gujarat on June 20. It moved inland shortly after and fully dissipated on June 22.
Deep Depression BOB 01 Shortly after the previous storm dissipated, a new depression formed in the Bay of Bengal on June 24. It moved inland the next day.
Deep Depression LAND 01 (Aurora)
On August 9 a tropical depression developed in the northwest Arabian Sea. It tracked westward, becoming a tropical storm later that day. Aurora reached a peak of 50 mph winds before hitting eastern Oman on the 10th, where it dissipated shortly thereafter. The system was unofficially named as Aurora by the JTWC.
On Masirah Island, the storm dropped of rainfall.
Depression LAND 02
Severe Cyclonic Storm BOB 02 (Herbert) The remnants of Tropical Storm Herbert entered the basin on October 12 and redeveloped into a deep depression on October 14. Herbert reintensified into a 65 mph severe cyclonic storm before making landfall in Bangladesh on October 15 and dissipating thereafter.
Extremely Severe Cyclonic Storm BOB 03
65 mph Tropical Storm Three, which developed on November 5 in the central Bay of Bengal, hit southeastern Bangladesh on the 9th. The storm quickly dissipated without causing any reported damage.
Depression BOB 04 A weak tropical depression formed over Sri Lanka on December 21, quickly dissipating.
Other systems A tropical storm, designated 02B by the JTWC, began its life on October 1 in the central Bay of Bengal. It impacted northeastern India on the 3rd as a 60 mph tropical storm, dissipating the next day. It was not recognized by the IMD. The remnants of Western Pacific Tropical Storm Kim redeveloped in the northeastern Bay of Bengal near Myanmar. It moved parallel the coastline, hit western Myanmar, and dissipated on the 20th. However, the storm was not recognized by the IMD similarly to 02B. See also
North Indian Ocean tropical cyclone 1983 Atlantic hurricane season 1983 Pacific hurricane season 1983 Pacific typhoon season Australian cyclone seasons: 1982–83, 1983–84 South Pacific cyclone seasons: 1982–83, 1983–84 South-West Indian Ocean cyclone seasons: 1982–83, 1983–84
References
External links India Meteorological Department Joint Typhoon Warning Center