1971 North Indian Ocean cyclone season

Last updated
1971 North Indian Ocean cyclone season
1971 North Indian Ocean cyclone season summary.jpg
Season summary map
Seasonal boundaries
First system formedMay 3, 1971
Last system dissipatedDecember 21, 1971
Seasonal statistics
Deep depressions15
Cyclonic storms7
Severe cyclonic storms5
Total fatalities>10,860
Total damageUnknown
Related articles
North Indian Ocean tropical cyclone seasons
1969, 1970, 1971, 1972, 1973

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]

Contents

Seasonal summary

1971 Odisha cyclone1971 North Indian Ocean cyclone season

Systems

Depression One (01B)

Depression (IMD)
Tropical storm (SSHWS)
01B 1971-05-05.png   01B 1971 track.png
DurationMay 3 – May 8
Peak intensity45 km/h (30 mph) (3-min);

Deep Depression Two

Cyclonic Storm Three (03B)

Cyclonic storm (IMD)
Tropical storm (SSHWS)
03B 1971-06-04.png   03B 1971 track.png
DurationJune 3 – June 8
Peak intensity85 km/h (50 mph) (3-min);

Deep Depression Four

Deep Depression Five

Deep Depression Six

Deep Depression Seven

Deep Depression Eight

Deep Depression Nine

Severe Cyclonic Storm Ten (10B)

Severe cyclonic storm (IMD)
Category 1 tropical cyclone (SSHWS)
10B 1971-09-28.png   10B 1971 track.png
DurationSeptember 27 – October 1
Peak intensity95 km/h (60 mph) (3-min);

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)

Extremely severe cyclonic storm (IMD)
Category 3 tropical cyclone (SSHWS)
BayOfBengalTCOct2919710802UTCESSA9.gif   12B 1971 track.png
DurationOctober 27 – November 1
Peak intensity165 km/h (105 mph) (3-min);
966  hPa  (mbar)

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)

Severe cyclonic storm (IMD)
Category 1 tropical cyclone (SSHWS)
NIndianTC1971029midDMSP.gif   13A 1971 track.png
DurationOctober 27 – November 1
Peak intensity110 km/h (70 mph) (3-min);

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

Severe Cyclonic Storm Fourteen (14B)

Severe cyclonic storm (IMD)
Category 1 tropical cyclone (SSHWS)
14B 1971-11-04.png   14B 1971 track.png
DurationNovember 3 – November 6
Peak intensity100 km/h (65 mph) (3-min);

Very Severe Cyclonic Storm Fifteen (15A)

Very severe cyclonic storm (IMD)
Category 1 tropical cyclone (SSHWS)
15A 1971-12-17.png   15A 1971 track.png
DurationDecember 14 – December 21
Peak intensity130 km/h (80 mph) (3-min);

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

See also

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<span class="mw-page-title-main">1962 North Indian Ocean cyclone season</span>

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<span class="mw-page-title-main">1964 North Indian Ocean cyclone season</span>

The 1964 North Indian Ocean cyclone season had no bounds, but cyclones tend to form between April and December, with peaks in May and November. 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 releases unofficial advisories. An average of four to six storms 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.

References

  1. "Frequently Asked Questions: What is the annual frequency of Cyclones over the Indian Seas? What is its intra-annual variation?". India Meteorological Department. 2012. Archived from the original on May 21, 2015. Retrieved June 8, 2012.
  2. "Bulletins Issued by Regional Specialized Meteorological Centre (RSMC) – Tropical Cyclones, New Delhi" (PDF). India Meteorological Department. May 25, 2009. Archived from the original (PDF) on 2012-04-12. Retrieved July 16, 2012.
  3. "Natural catastrophes and man-made disasters in 2008: North America and Asia suffer heavy losses" (PDF). Swiss Reinsurance Company Ltd. 21 January 2009. p. 38. Retrieved 23 May 2017.