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1971 North Indian Ocean cyclone season
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| Field | Value |
|---|---|
| Basin | NIO |
| Year | 1971 |
| Track | 1971 North Indian Ocean cyclone season summary.jpg |
| First storm formed | May 3, 1971 |
| Last storm dissipated | December 21, 1971 |
| Total depressions | 15 |
| Total storms | 7 |
| Total hurricanes | 5 |
| Fatalities | 10,860 |
| five seasons | 1969, 1970, 1971, 1972, 1973 |
| Atlantic season | 1971 Atlantic hurricane season |
| East Pacific season | 1971 Pacific hurricane season |
| West Pacific season | 1971 Pacific typhoon season |
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. Cyclones occurring between the meridians 45°E and 100°E are included in the season by the IMD.
Seasonal summary
ImageSize = width:800 height:270 PlotArea = top:10 bottom:95 right:20 left:20 Legend = columns:3 left:30 top:73 columnwidth:270 AlignBars = early
DateFormat = dd/mm/yyyy Period = from:01/05/1971 till:31/12/1971 TimeAxis = orientation:horizontal ScaleMinor = grid:black unit:month increment:1 start:01/05/1971
Colors = id:canvas value:gray(0.88) id:GP value:red id:TD value:rgb(0,0.52,0.84) legend:Depression_(31–50_km/h) id:DD value:rgb(0.43,0.76,0.92) legend:Deep_Depression_(51–62_km/h) id:TS value:rgb(0.3,1,1) legend:Cyclonic_Storm_(63–88_km/h) id:ST value:rgb(0.75,1,0.75) legend:Severe_Cyclonic_Storm_(89–117_km/h) id:VS value:rgb(1,0.85,0.55) legend:Very_Severe_Cyclonic_Storm_(118–165_km/h) id:ES value:rgb(1,0.45,0.54) legend:Extremely_Severe_Cyclonic_Storm_(166–220_km/h) id:SU value:rgb(0.55,0.46,0.9) legend:Super_Cyclonic_Storm_(≥221_km/h) Backgroundcolors = canvas:canvas
BarData = barset:Hurricane bar:Month
PlotData= barset:Hurricane width:10 align:left fontsize:S shift:(4,-4) anchor:till from:03/05/1971 till:08/05/1971 color:TD text:"One" from:01/06/1971 till:04/06/1971 color:DD text:"Two" from:03/06/1971 till:08/06/1971 color:TS text:"Three" from:20/06/1971 till:23/06/1971 color:DD text:"Four" from:15/07/1971 till:22/07/1971 color:DD text:"Five" from:26/07/1971 till:29/07/1971 color:DD text:"Six" from:07/08/1971 till:09/08/1971 color:DD text:"Seven" from:30/08/1971 till:01/09/1971 color:DD text:"Eight" barset:break from:24/09/1971 till:25/09/1971 color:DD text:"Nine" from:27/09/1971 till:01/10/1971 color:ST text:"Ten" from:14/10/1971 till:17/10/1971 color:DD text:"Eleven" from:26/10/1971 till:01/11/1971 color:ES text:"Twelve" from:27/10/1971 till:01/11/1971 color:ST text:"Thirteen" from:03/11/1971 till:06/11/1971 color:ST text:"Fourteen" from:14/12/1971 till:21/12/1971 color:VS text:"Fifteen"
bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas from:01/05/1971 till:31/05/1971 text:May from:01/06/1971 till:30/06/1971 text:June from:01/07/1971 till:31/07/1971 text:July from:01/08/1971 till:31/08/1971 text:August from:01/09/1971 till:30/09/1971 text:September from:01/10/1971 till:31/10/1971 text:October from:01/11/1971 till:30/11/1971 text:November from:01/12/1971 till:31/12/1971 text:December
Systems
Depression One (01B)
|1-min winds=35 |3-min winds=25
Deep Depression Two
Cyclonic Storm Three (03B)
|1-min winds=35 |3-min winds=45
Deep Depression Four
Deep Depression Five
Deep Depression Six
Deep Depression Seven
Deep Depression Eight
Deep Depression Nine
Severe Cyclonic Storm Ten (10B)
|1-min winds=65 |3-min winds=50
Deep Depression Eleven
Extremely Cyclonic Storm Twelve (12B)
Main article: 1971 Odisha cyclone
|1-min winds=100 |3-min winds=90 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.
Severe Cyclonic Storm Thirteen (13A)
|1-min winds=70 |3-min winds=60
Severe Cyclonic Storm Fourteen (14B)
|1-min winds=65 |3-min winds=55
Very Severe Cyclonic Storm Fifteen (15A)
|1-min winds=65 |3-min winds=70 This was a rare cyclone which threatened the Arabian Peninsula in the month of December.
References
References
- (2012). "Frequently Asked Questions: What is the annual frequency of Cyclones over the Indian Seas? What is its intra-annual variation?". India Meteorological Department.
- (May 25, 2009). "Bulletins Issued by Regional Specialized Meteorological Centre (RSMC) – Tropical Cyclones, New Delhi". India Meteorological Department.
- (21 January 2009). "Natural catastrophes and man-made disasters in 2008: North America and Asia suffer heavy losses". Swiss Reinsurance Company Ltd.
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