1986 North Indian Ocean cyclone season explained

Basin:	NIO
Year:	1986
Track:	1986 North Indian Ocean cyclone season summary.jpg
First Storm Formed:	January 7, 1986
Last Storm Dissipated:	November 11, 1986
Strongest Storm Name:	Two
Strongest Storm Winds:	45
Average Wind Speed:	3
Total Disturbances:	8
Total Depressions:	4
Total Storms:	1
Fatalities:	11
Five Seasons:	1984, 1985, 1986, 1987, 1988
Atlantic Season:	1986 Atlantic hurricane season
East Pacific Season:	1986 Pacific hurricane season
West Pacific Season:	1986 Pacific typhoon season

The 1986 North Indian Ocean cyclone season was part of the annual cycle of tropical cyclone formation. The 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.^[1] Cyclones occurring between the meridians 45°E and 100°E are included in the season by the IMD.^[2]

The season was quiet, with only 3 systems.

Summary

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Systems

Deep Depression One (1B)

Basin:	NIO
Track:	Cyclone 01B 1986 track.png
Formed:	January 7
Dissipated:	January 11
1-Min Winds:	45
3-Min Winds:	30

Tropical Depression 1B developed southeast of Sri Lanka on January 7. It tracked northwestward, briefly strengthening to a 50 mph tropical storm before upper-level winds caused it to dissipate on the 11th.

Cyclonic Storm Two (2B)

Basin:	NIO
Track:	Cyclone 02B 1986 track.png
Formed:	November 6
Dissipated:	November 10
1-Min Winds:	50
3-Min Winds:	45

A tropical disturbance slowly organized into a tropical depression on November 6 in the Bay of Bengal. It turned to the northeast, became a tropical storm, and reached a peak of 60 mph winds before hitting Bangladesh on the 9th. The storm dissipated on the 10th, after causing 11 casualties and heavy damage.

Deep Depression Three (3A)

Basin:	NIO
Track:	Cyclone 03A 1986 track.png
Formed:	November 9
Dissipated:	November 11
1-Min Winds:	45
3-Min Winds:	30

From November 9 to the 11th, Tropical Storm Three existed over the open Arabian Sea, dissipating due to vertical shear.

See also

• North Indian Ocean tropical cyclone
• 1986 Atlantic hurricane season
• 1986 Pacific hurricane season
• 1986 Pacific typhoon season
• Australian cyclone seasons: 1985–86, 1986–87
• South Pacific cyclone seasons: 1985–86, 1986–87
• South-West Indian Ocean cyclone seasons: 1985–86, 1986–87

External links

• India Meteorological Department
• Joint Typhoon Warning Center

Notes and References

1. Web site: India Meteorological Department . 2012 . June 8, 2012 . Frequently Asked Questions: What is the annual frequency of Cyclones over the Indian Seas? What is its intra-annual variation? . dead . https://web.archive.org/web/20150521044203/http://www.imd.gov.in/section/nhac/dynamic/faq/FAQP.htm . May 21, 2015 .
2. Web site: India Meteorological Department. May 25, 2009. July 16, 2012. Bulletins Issued by Regional Specialized Meteorological Centre (RSMC) – Tropical Cyclones, New Delhi. https://web.archive.org/web/20120412152516/http://www.imd.gov.in/section/nhac/dynamic/bulletins.pdf. 2012-04-12. dead.