1971 North Indian Ocean cyclone season explained

The 1971 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]

Seasonal summary

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Systems

Depression One (01B)

Deep Depression Two

Cyclonic Storm Three (03B)

Deep Depression Four

Deep Depression Five

Deep Depression Six

Deep Depression Seven

Deep Depression Eight

Deep Depression Nine

Severe Cyclonic Storm Ten (10B)

This cyclone was formed on September 27 and peaked as a Category-1 equivalent storm. On September 30, the storm made landfall over Sunderbans and dissipated over the state of Bihar by the next day. 60 people were killed due to the storm.

Deep Depression Eleven

Extremely Cyclonic Storm Twelve (12B)

See main article: 1971 Odisha cyclone.

On October 27 a tropical depression formed in the Bay of Bengal. It tracked northward, rapidly strengthened until reached a peak of 115 mph winds. The cyclone struck Paradip in Odisha, India, on October 29, and dissipated by the same day. The storm surge and flooding from the system caused 10,800 fatalities.^[3]

Severe Cyclonic Storm Thirteen (13A)

A tropical cyclone moved through the Arabian Sea near the end of October.

Severe Cyclonic Storm Fourteen (14B)

Very Severe Cyclonic Storm Fifteen (15A)

This was a rare cyclone which threatened the Arabian Peninsula in the month of December.

See also

• North Indian Ocean tropical cyclone
• 1971 Atlantic hurricane season
• 1971 Pacific hurricane season
• 1971 Pacific typhoon season
• Australian cyclone seasons: 1970–71, 1971–72
• South Pacific cyclone seasons: 1970–71, 1971–72
• South-West Indian Ocean cyclone seasons: 1970–71, 1971–72

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.
3. Web site: Natural catastrophes and man-made disasters in 2008: North America and Asia suffer heavy losses. 21 January 2009. Swiss Reinsurance Company Ltd. 38. 23 May 2017.