Просмотр кода страницы Английская Википедия:1970 North Indian Ocean cyclone season

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{{Short description|North Indian Ocean tropical cyclone season}}
{{Use mdy dates|date=February 2012}}
{{Good article}}
{{Infobox tropical cyclone season
 | Track                    = 1970 North Indian Ocean cyclone season summary.jpg
 | Basin                    = NIO
 | Year                     = 1970
 | First storm formed       = May 2, 1970
 | Last storm dissipated    = November 29, 1970
 | Strongest storm name     = [[1970 Bhola cyclone|Thirteen]]
 | Strongest storm winds    = 100
 | Strongest storm pressure = 960
 | Total disturbances       = 15
 | Total depressions        = 11
 | Total storms             = 7
 | Total hurricanes         = 3
 | Fatalities               = 500,805+ (deadliest [[tropical cyclone]] season on record)
 | Damages                  = 86.4
 | five seasons             = [[1968 North Indian Ocean cyclone season|1968]], [[1969 North Indian Ocean cyclone season|1969]], '''1970''', [[1971 North Indian Ocean cyclone season|1971]], [[1972 North Indian Ocean cyclone season|1972]]
 | Atlantic season          = 1970 Atlantic hurricane season
 | East Pacific season      = 1970 Pacific hurricane season
 | West Pacific season      = 1970 Pacific typhoon season
}}

The '''1970 North Indian Ocean cyclone season''' had no bounds, but [[tropical cyclone]]s in the North Indian Ocean tend to form between April and December, with peaks in May and November. The 1970 season saw a total of seven cyclonic storms, of which three developed into severe cyclonic storms. The [[Bay of Bengal]] was more active than the [[Arabian Sea]] during 1970, with all of the three severe cyclonic storms in the season forming there. Unusually, none of the storms in the Arabian Sea made [[landfall]] this year. The most significant storm of the season was the [[1970 Bhola cyclone|Bhola cyclone]], which formed in the Bay of Bengal and hit [[Bangladesh]] on November 12. The storm killed at least 500,000, making it the deadliest tropical cyclone in recorded history.<ref name="cbc.ca">[https://www.cbc.ca/news/world/the-world-s-worst-natural-disasters-1.743208 The world's worst natural disasters Calamities of the 20th and 21st centuries] CBC News. Retrieved 2010-10-29.</ref> The season was also the deadliest tropical cyclone season globally, with 500,805 fatalities, mostly due to the aforementioned Bhola cyclone.

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== Season summary ==
<div style="text-align: center;">
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Period = from:01/05/1998 till:31/12/1998
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 from:23/05/1998 till:24/05/1998 color:TD text:"Two (D)"
 from:28/05/1998 till:02/06/1998 color:ST text:"Three (SCS)"
 from:07/06/1998 till:11/06/1998 color:TS text:"Four (CS)"
 from:29/06/1998 till:03/07/1998 color:DD text:"Five (DD)"
 from:06/07/1998 till:08/07/1998 color:DD text:"Six (DD)"
 from:17/08/1998 till:19/08/1998 color:TD text:"Seven (D)"
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 from:08/09/1998 till:18/09/1998 color:DD text:"Nine (DD)"
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 from:11/10/1998 till:13/10/1998 color:TD text:"Eleven (D)"
 from:18/10/1998 till:24/10/1998 color:VS text:"Twelve (VSCS)"
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 from:01/05/1998 till:01/06/1998 text:May
 from:01/06/1998 till:01/07/1998 text:June
 from:01/07/1998 till:01/08/1998 text:July
 from:01/08/1998 till:01/09/1998 text:August
 from:01/09/1998 till:01/10/1998 text:September
 from:01/10/1998 till:01/11/1998 text:October
 from:01/11/1998 till:01/12/1998 text:November
 from:01/12/1998 till:31/12/1998 text:December

</timeline>
</div>

== Systems ==
=== Severe Cyclonic Storm One ===
{{Infobox tropical cyclone small
 | Basin         = NIO
 | Image         = 03B May 4 1970 0536Z.png
 | Track         = 1970 Indian cyclone 1 track.png
 | Formed        = May 2
 | Dissipated    = May 7
 | 3-min winds   = 80
 | Pressure      = 975
}}
A low-pressure area that developed over the southern [[Andaman Sea]] late in April moved north into the [[Bay of Bengal]], becoming the first depression of the year on May 2. The depression intensified under the influence of a high-level anticyclone and became a cyclonic storm the next day. The storm then turned to the northeast and strengthened into a severe cyclonic storm on May 4. Soon after this, it peaked with winds of {{convert|150|km/h|mph|abbr=on|round=5}} and a well-defined [[eye (cyclone)|eye]] formed. The storm made its [[landfall]] near [[Cox's Bazar]] in easternmost [[East Pakistan]] (now [[Bangladesh]]) early in the morning of May 7 and dissipated over western [[Burma]] that evening.

The cyclone brought widespread rain to the [[Andaman Islands|Andaman]] and [[Nicobar Islands]], before it moved clear of them on May 3. Effects in East Pakistan are unknown, but [[Akyab]] in western Burma reported winds of {{convert|55|km/h|mph|abbr=on|round=5}} as the cyclone approached land.<ref name="1970 AR">{{cite report|url=ftp://ftp.library.noaa.gov/docs.lib/htdocs/rescue/cd024_pdf/005ED281.pdf|title=India Weather Review Annual Summary&nbsp;— Part-C: Storms and Depressions 1970|publisher=India Meteorological Department|year=1971|access-date=May 26, 2020|archive-date=June 14, 2019|archive-url=https://web.archive.org/web/20190614112938/ftp://ftp.library.noaa.gov/docs.lib/htdocs/rescue/cd024_pdf/005ED281.pdf|url-status=dead}}</ref>
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=== Depression Two ===
{{Infobox tropical cyclone small
 | Basin         = NIO
 | Image         = 02B May 23 1970 0522Z.png
 | Track         = 1970 Indian cyclone 2 track.png
 | Formed        = May 23
 | Dissipated    = May 24
 | 3-min winds   = 25
}}
A depression formed in the northeast of the Bay of Bengal during the morning of May 23, near the [[East Pakistan]] coast. It moved towards the coast and made landfall to the south of [[Cox's Bazar]] that night, before dissipating over southern [[Assam]] on the next day.<ref name="1970 AR"/> Any effects on land are unknown.
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=== Cyclonic Storm Three ===
{{Infobox tropical cyclone small
 | Basin         = NIO
 | Image         = 01A May 29 1970 0609Z.png
 | Track         = 1970 Indian cyclone 3 track.png
 | Formed        = May 28
 | Dissipated    = June 2
 | 3-min winds   = 50
 | Pressure      = 986
}}
A low-pressure area developed off the [[Karnataka]]–[[Goa]] coastline in the [[Arabian Sea]] on May 27, and developed into a depression on the next day. The system developed further into a cyclonic storm on May 29 as it moved to the north. The storm reached its peak with {{convert|95|km/h|mph|abbr=on|round=5}}; soon after this, as it turned to the west, but soon degenerated into a deep depression over the northern Arabian Sea on May 31. The depression continued to move westward, weakening to a remnant low shortly afterward, as it made landfall on the [[Arabian Peninsula]], on June 2. The remnant low dissipated over southern [[Saudi Arabia]] on the next day.<ref name="1970 AR"/>
The cyclone itself had minimal effects on land, but the monsoon advanced into western India in late May in association with the system. As the cyclone moved to the west away from the subcontinent, the incursion of moist air from the Arabian Sea persisted over northwestern India for the first three days of June. This brought moderate rainfall to regions of [[Gujarat]], Rajasthan and western [[Madhya Pradesh]].<ref name="1970 AR"/>
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=== Cyclonic Storm Four ===
{{Infobox tropical cyclone small
 | Basin         = NIO
 | Image         = 04B Jun 10 1970 0554Z.png
 | Track         = 1970 Indian cyclone 4 track.png
 | Formed        = June 7
 | Dissipated    = June 11
 | Prewinds      = ≥
 | 3-min winds   = 35
 | Pressure      = 986
}}
A low-pressure area developed in the northern Bay of Bengal on June 6 and developed into a depression on the next day, as it drifted to the north, moving over the south of the [[Ganges Delta]]. The depression reversed its course overland, reemerging into the Bay of Bengal on June 8. Once over open water, the depression intensified into a cyclonic storm on the morning of June 9. The cyclone's motion shifted to the northwest and it made a second landfall near [[Balasore]] in northern [[Orissa, India|Orissa]] that night. The cyclone quickly weakened to a deep depression overland and tracked to the west over central India, where it degenerated into a broad area of low pressure on June 11.<ref name="1970 AR"/>
Sustained winds of {{convert|65|km/h|mph|abbr=on|round=5}} were recorded at Sandheads on June 9, while the cyclone was at its peak offshore. High levels of rain affected much of Orissa and [[West Bengal]], with over {{convert|100|mm|in|abbr=on}} falling over large areas of both states. As the storm dissipated overland, it brought severe rain to [[Vidarbha]] and southern [[Madhya Pradesh]]. The highest recorded rainfall was at [[Khandwa]] were {{convert|280|mm|in|abbr=on}} fell on June 13 alone. The rains led to localised flooding in parts of Vidarbha and disrupted road transport in the region.<ref name="1970 AR"/>
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=== Deep Depression Five ===
{{Infobox tropical cyclone small
 | Basin         = NIO
 | Image         = 1970 Indian cyclone 5 track.png
 | Formed        = June 29
 | Dissipated    = July 3
 | Prewinds      = ≥
 | 3-min winds   = 28
}}
A low-pressure area that had developed over the northern [[Bay of Bengal]] on June 28 organized into a depression early on June 29. The depression intensified as it moved to the northwest, becoming a deep depression shortly before it crossed the [[Orissa, India|Orissa]] coast. After landfall, the storm continued to move to the northwest, weakening to a depression again on July 2, over northeast [[Madhya Pradesh]]. It degenerated into a remnant low over central [[Uttar Pradesh]] during the evening of July 3.<ref name="1970 AR"/>
The depression brought intense monsoon conditions to Orissa, Madhya Pradesh and [[Vidarbha]] during its life. Over {{convert|210|mm|in|abbr=on}} of rain and winds of {{convert|85|km/h|mph|abbr=on|round=5}} were recorded in [[Paradip]] as the depression made landfall on June 30. Inland, the heavy rains caused some rivers in Orissa to overflow and flooded rice paddies in [[Cuttack District]]. Further west, the [[Wainganga River]] overflowed its banks in places. Road transport in Madhya Pradesh was disrupted and there was damage to crops in the [[Raipur]] area. Raipur recorded the highest 24-hour rains associated with the depression, with {{convert|230|mm|in|abbr=on}} falling there on July 2.<ref name="1970 AR"/>
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=== Deep Depression Six ===
{{Infobox tropical cyclone small
 | Basin         = NIO
 | Image         = 1970 Indian cyclone 6 track.png
 | Formed        = July 6
 | Dissipated    = July 8
 | 3-min winds   = 30
 | Prepressure   = ≤
 | Pressure      = 992
}}
A low-pressure area moved to the west, off the [[Burma|Burmese]] coast on July 5, and developed into a depression on the next day, in the north-central [[Bay of Bengal]]. The depression intensified as it moved to the northwest, becoming a deep depression on July 7. The system made landfall on the [[Orissa, India|Orissa]] coast during the morning of July 8, and rapidly degenerated into a broad area of low pressure overland. The remnant low moved north over western [[Bihar]] and it persisted there until July 12, when it was absorbed by the [[monsoon trough]].<ref name="1970 AR"/>
Winds of {{convert|55|km/h|mph|abbr=on|round=5}} were recorded offshore at Sandheads when the system was at its peak. The depression brought isolated heavy rains to many places throughout [[East India]], with rains in excess of {{convert|100|mm|in|abbr=on}} falling each day from the depression's landfall until the absorption of the storm's remnant low.<ref name="1970 AR"/>
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=== Depression Seven ===
{{Infobox tropical cyclone small
 | Basin         = NIO
 | Image         = 07B Aug 17 1970 0541Z.png
 | Track         = 1970 Indian cyclone 7 track.png
 | Formed        = August 17
 | Dissipated    = August 19
 | 3-min winds   = 25
}}
A low-pressure area that lay over [[Burma]] on August 15, moved to the west across the [[Bay of Bengal]] and developed into a depression on the evening of August 17, when it was {{convert|100|km|mi|abbr=on}} southeast of [[Gopalpur-on-Sea]]. The depression moved to the northwest and made landfall near Gopalpur-on-Sea, and turned to the west overland. The depression had weakened into a remnant low by August 20, when it was over western [[Madhya Pradesh]].<ref name="1970 AR"/>
The depression and associated weather brought widespread rain to much of south and central India, with heavy rain falling in some locations. The heavy rain in [[Maharashtra]] disrupted road transport in many areas, especially in the east of the state. The [[Godavari River]] inundated parts of [[Bhadrachalam]] and many villages in regions of [[Andhra Pradesh]]. The rains also damaged rice paddies and disrupted transport in [[Telangana]]. Rains associated with the depression reached as far west as [[Bombay]] with {{convert|200|mm|in|abbr=on}} falling there on August 19.<ref name="1970 AR"/>
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=== Cyclonic Storm Eight ===
{{Infobox tropical cyclone small
 | Basin         = NIO
 | Image         = 10B Sept 11 1970 0757Z.png
 | Track         = 1970 Indian cyclone 8 track.png
 | Formed        = September 2
 | Dissipated    = September 13
 | 3-min winds   = 34
}}
A low-pressure area that was centred over [[West Bengal]] on August 31 organized into a depression on September 2, when it was {{convert|50|km|mi|abbr=on}} to the east of [[Midnapore]]. It intensified as it moved to the west, becoming a deep depression on the next day, about {{convert|50|km|mi|abbr=on}} east of [[Ranchi]]. The system continued to move west across India, before weakening into a depression on September 7, near [[Ahmedabad]], Gujarat. The depression then turned northward and entered southwest [[Rajasthan]].<ref name="1970 AR"/> On September 8, the system turned to the southwest and emerged into the [[Arabian Sea]] on the following evening. Over open water, it intensified again, becoming a cyclonic storm by the evening of September 10. The cyclone developed a short-lived [[eye (cyclone)|eye]] on September 11, as it drifted slowly to the west, before degenerating into a broad area of low pressure as it neared the [[Oman]] coast, on September 14.<ref name="1970 AR"/>
This system brought widespread rains to a wide swathe of India during its existence. Some heavy rains in West Bengal flooded vast areas of many districts and resulted in some fatalities, whilst in parts of neighbouring [[Orissa, India|Orissa]] the floodwaters damaged fields. {{convert|390|mm|in|abbr=on}} of rain fell on [[Bardhaman]] over two days as the depression passed overhead. Several thousand people were made homeless in West Bengal. Both the [[Narmada River|Narmada]] and [[Tapti River]]s inundated parts of [[Madhya Pradesh]] and Gujarat. The floods in Gujarat took many lives and caused severe damage to crops and other properties. Between 300 and 400&nbsp;people were washed away in two villages in [[Bharuch district]].<ref name="1970 AR"/> {{convert|260|mm|in|abbr=on}} of rain fell on [[Surat]] on July 7 and a further {{convert|80|mm|in|abbr=on}} on [[Kutch District]] as the cyclone moved out to sea.<ref name="1970 AR"/>
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=== Deep Depression Nine ===
{{Infobox tropical cyclone small
 | Basin         = NIO
 | Image         = 09B Sept 11 1970 0610Z.png
 | Track         = 1970 Indian cyclone 9 track.png
 | Formed        = September 8
 | Dissipated    = September 18
 | 3-min winds   = 30
 | Pressure      = 990
}}
A low-pressure area moved from [[Burma]] to the [[Bay of Bengal]] on September 8, where it developed into a depression. The depression strengthened as it moved to the northwest and became a deep depression on the next day, when it was {{convert|150|km|mi|abbr=on}} southeast of [[Calcutta]]. The system crossed the [[West Bengal]] coast later and moved to the northwest across the [[Chota Nagpur Plateau]]. The depression stalled over [[Uttar Pradesh]] on September 12, and remained near [[Lucknow]] until September 14. The depression then turned to the east and weakened into a remnant low over northern [[Bihar]], on September 18.<ref name="1970 AR"/>
The depression brought widespread rain to West Bengal, [[Orissa, India|Orissa]], Bihar, Uttar Pradesh, and [[Madhya Pradesh]] during its lifespan, with rains of {{convert|140|mm|in|abbr=on}} as far west as Lucknow. The rains in Uttar Pradesh caused severe property damage and flooding, with some 150&nbsp;people losing their lives in the state. The [[Ganges]] flooded in northern Bihar, inundating parts of [[Munger District]], whilst the [[Gandaki River]] flooded parts of [[Motihari]]. The rains worsened floods in south Bengal, increasing the death toll from the floods there to 80 and affecting 8&nbsp;million people, with considerable damage done to crops and housing. [[Jaleswar]] in Orissa was entirely flooded.<ref name="1970 AR"/>
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=== Depression Ten ===
{{Infobox tropical cyclone small
 | Basin         = NIO
 | Image         = 08B Sept 21 1970 0538Z.png
 | Track         = 1970 Indian cyclone 10 track.png
 | Formed        = September 21
 | Dissipated    = September 23
 | 3-min winds   = 25
}}
A well-defined low-pressure area formed over the west central [[Bay of Bengal]] on September 20, and developed into a depression on the next morning about {{convert|100|km|mi|abbr=on}} south-east of [[Visakhapatnam]]. The depression then moved overland, and after crossing [[Vidarbha]], weakened into a remnant low over [[Gujarat]] on September 23.<ref name="1970 AR"/>
The depression brought widespread rain to northern [[South India]] as it passed over the country, and its remnants brought scattered rain to Gujarat over the following week. Over a period of four hours, heavy rain fell on [[Hyderabad, Andhra Pradesh|Hyderabad]] and [[Secunderabad]], destroying many houses in the two cities. About {{convert|130|mm|in|abbr=on}} of rain fell on [[Bombay]] as the system dissipated. The heavy rains claimed about 75 lives.<ref name="1970 AR"/>
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=== Depression Eleven ===
{{Infobox tropical cyclone small
 | Basin         = NIO
 | Image         = 1970 Indian cyclone 11 track.png
 | Formed        = October 11
 | Dissipated    = October 13
 | 3-min winds   = 25
}}
A low-pressure area that developed in the Bay of Bengal passed over the southern [[Indian subcontinent]] and developed into a depression in the Arabian Sea, off the southern [[Maharashtra]] coast on October 11. The depression did not develop further as it drifted westward, and it degenerated into an area of low pressure on October 13, as it was approaching the [[Arabian Peninsula]]. The depression brought widespread rains to southern Maharashtra and [[Karnataka]] states, with {{convert|40|mm|in}} of rain recorded in [[Karwar]]. Scattered heavy rain was also reported in the [[Laccadives]].<ref name="1970 AR"/>
{{Clear}}

=== Severe Cyclonic Storm Twelve ===
{{Infobox tropical cyclone small
 | Basin         = NIO
 | Image         = 12B Oct 21 1970 0554Z.png
 | Track         = 1970 Indian cyclone 12 track.png
 | Formed        = October 18
 | Dissipated    = October 24
 | 3-min winds   = 70
 | Pressure      = 980
}}
A depression formed on October 18 in the central [[Bay of Bengal]], and moved to the north. It gradually intensified and turned to the northeast, becoming a cyclonic storm on October 20. The storm became the second severe cyclonic storm of the season on the following day, and turned onto a more northerly track towards the [[Ganges Delta]]. The storm peaked with winds of {{convert|130|km/h|mph|abbr=on|round=5}} before it made [[landfall]] near the [[West Bengal]]–[[East Pakistan]] border, during the morning of October 23. The storm then crossed over East Pakistan, before dissipating over southern [[Assam]] on October 24.<ref name="1970 AR"/>

This cyclone brought widespread rain to [[Tamil Nadu]] as it formed, and to the [[Andaman and Nicobar Islands]] as it moved over the Bay of Bengal. After its landfall, it brought severe rains to West Bengal, Assam, and East Pakistan. The highest recorded rainfall in India was at [[Shillong]], where {{convert|220|mm|in|abbr=on}} fell on October 24. A gust of {{convert|105|km/h|mph|abbr=on|round=5}} was recorded in [[Calcutta]] as the storm passed by to the east, where it caused the failure of the power supply.<ref name="1970 AR"/>

The cyclone claimed between 200 and 300 lives in East Pakistan, with the worst of the damage occurring in [[Khulna District]].<ref name="1970 AR"/> Over 200 villages were destroyed in the district, leaving several thousand people homeless, and there was extensive damage to crops.<ref name="OctoberNews">{{cite news|author=Staff writer |agency=Reuters |title=125 Die In Hurricane In Pakistan |url=http://thehurricanearchive.com/cache/21132106.pdf |date=October 27, 1970 |access-date=April 15, 2007 |work=[[The Daily Gleaner]] }}{{dead link|date=June 2016|bot=medic}}{{cbignore|bot=medic}}</ref>
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=== Extremely Severe Cyclonic Storm Thirteen ===
{{Infobox tropical cyclone small
 | Basin         = NIO
 | Image         = BayofBengalTCNov1219700956UTCITOS1.png
 | Track         = 1970 Bhola cyclone track.png
 | Formed        = November 8
 | Dissipated    = November 13
 | 3-min winds   = 100
 | 1-min winds   = 130
 | Pressure      = 960
}}
{{Main|1970 Bhola cyclone}}
On the morning of November 8, a depression formed in the south-central Bay of Bengal. It moved very slowly to the north, becoming a cyclonic storm on the next day. The cyclone continued to intensify as it approached the head of the Bay, becoming the third severe cyclonic storm of the season on November 11. That evening, it reached its peak intensity, with winds of {{convert|185|km/h|mph|abbr=on|round=5}} with a well-developed [[eye (cyclone)|eye]], becoming the strongest storm of the season. On November 11 the Indian 5500 tonne freighter the Mahajagmitra reported wind speeds of 180 miles an hour and relayed a distress signal before it sank off the East Coast of India with 50 people on board.<ref>SAARC ftp://rammftp.cira.colostate.edu/ftpguest/SAARC_report.doc</ref> The vortex then made [[landfall]] on the coast of [[East Pakistan]] during the night of November 12. The cyclone weakened rapidly as it moved inland and dissipated on the next day, over south [[Assam]].<ref name="1970 AR"/>

This cyclone brought a devastating [[storm surge]] of up to {{convert|10|m|ft|abbr=off}} high to the [[Ganges Delta]]. Largely as a result of this surge, somewhere between 300,000 and 500,000&nbsp;people lost their lives, making this storm the deadliest [[tropical cyclone]] ever recorded and one of the deadliest [[natural disaster]]s of modern times.<ref name="cbc.ca" /><ref name="IWM">{{cite web|url=http://www.iwmbd.org/html/PUBS/publications/P024.PDF|title=Cyclonic Storm Surge Modelling for Design of Coastal Polder|author=Kabir, M. M.|author2=Saha B. C.|author3= Hye, J. M. A.|access-date=April 15, 2007|publisher=[[Institute of Water Modeling]]|archive-url = https://web.archive.org/web/20070622000638/http://www.iwmbd.org/html/PUBS/publications/P024.PDF |archive-date = June 22, 2007|url-status=dead}}</ref> The total damage from the storm exceeded $85&nbsp;million (1970 USD, $480&nbsp;million 2008&nbsp;USD), and much of the agricultural and fishing capacity of the region was wiped out. A total of some 3.6&nbsp;million people suffered direct effects from this cyclone.{{EM-DAT}}

The Pakistani government was severely criticized for its handling of the relief operations following the storm, both by local political leaders in East Pakistan and in the international media. In the December national elections, the opposition [[Awami League]] gained a [[landslide victory]], gaining 160 of the 162 East Pakistani seats. Continuing unrest between East Pakistanis and the central government trigged the [[Bangladesh Liberation War]], which concluded with the creation of the state of [[Bangladesh]]. This is one of the first times that a natural event helped to trigger a civil war in modern times.<ref name="USAID">{{cite web|url=http://www.usaid.gov/our_work/humanitarian_assistance/disaster_assistance/publications/ofda_cjanalysis_02_21-2005.pdf |access-date=April 15, 2007 |date=February 21, 2005 |title=A Critical Juncture Analysis, 1964–2003 |last=Olson |first=Richard |publisher=[[USAID]] |archive-url=https://web.archive.org/web/20090919235143/http://www.usaid.gov/our_work/humanitarian_assistance/disaster_assistance/publications/ofda_cjanalysis_02_21-2005.pdf |archive-date=September 19, 2009 |url-status=dead |df=mdy }}</ref>
{{Clear}}

=== Deep Depression Fourteen ===
{{Infobox tropical cyclone small
 | Basin         = NIO
 | Image         = 14B Nov 20 1970 0607Z.png
 | Track         = 1970 Indian cyclone 14 track.png
 | Formed        = November 19
 | Dissipated    = November 20
 | Prewinds      = ≥
 | 3-min winds   = 28
}}
A low-pressure are that had developed over the south [[Andaman Sea]] moved west across the southern [[Bay of Bengal]], and organized into a depression on the morning of November 19, when it was situated about {{convert|600|km|mi|abbr=on}} southeast of [[Madras]]. The system intensified further into a deep depression, as it moved west-northwestward, and made landfall on [[Tamil Nadu]] on the following day. The depression subsequently weakened into a remnant low over Tamil Nadu.<ref name="1970 AR"/>
The depression brought widespread rain to much of Tamil Nadu, with heavy rain impacting the coastal regions. Low-lying coastal regions from [[Pondicherry (city)|Pondicherry]] to Atirampattinam. There was damage to crops and housing in [[Thanjavur District]] and the rains left thousands homeless in Madras. [[Cuddalore]] experienced exceptionally heavy rains with over {{convert|440|mm|in|abbr=on}} falling there, of which {{convert|310|mm|in|abbr=on}} fell on November 20 alone.<ref name="1970 AR"/>
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=== Cyclonic Storm Fifteen ===
{{Infobox tropical cyclone small
 | Basin         = NIO
 | Image         = 13A Nov 27 1970 0757Z.png
 | Track         = 1970 Indian cyclone 15 track.png
 | Formed        = November 22
 | Dissipated    = November 29
 | 3-min winds   = 40
}}
The remnant low of a [[#Deep Depression Fourteen|depression]] emerged into the [[Arabian Sea]] off [[Kerala]] late on November 21, and developed into a new depression on the next day, as it moved westward. The depression moved further west, and gradually turned toward the southwest, intensifying as it did so. It became a cyclonic storm on November 28, to the southeast of [[Socotra]], and reached its peak intensity with winds of {{convert|75|km/h|mph|abbr=on|round=5}} soon after. The cyclone continued to move west-southwestward, and rapidly weakened into a remnant low-pressure area off the [[Somalia]] coast on the next day, ending the season.<ref name="1970 AR"/>
The cyclone brought widespread rain to the [[Laccadives]] from November 22 to 24, with {{convert|60|mm|in|abbr=on}} recorded on [[Amini, India|Amini]] on November 23.<ref name="1970 AR"/>
{{Clear}}

== Season effects ==
This is a table of all storms in the 1970 North Indian Ocean cyclone season. It mentions all of the season's storms and their names, durations, peak intensities (according to the IMD storm scale), areas affected, damages, and death totals. Damage and death totals include the damage and deaths caused when that storm was a precursor wave or extratropical low, and all of the damage figures are in 1970 USD.

{{North Indian Ocean areas affected (Top)}}
|-
| One || {{sort|19700502|May 2–7, 1970}} || bgcolor=#{{storm colour|VSCS}}|{{Sort|5|Very severe cyclonic storm}} || bgcolor=#{{storm colour|VSCS}}| {{sort|150|{{convert|150|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|VSCS}}|{{convert|975|hPa|inHg|sigfig=4|abbr=on}} || Bangladesh, Myanmar || || ||<ref name="1970 AR"/>
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| Two || {{Sort|19700523|May 23–24, 1970}} || bgcolor=#{{storm colour|D}}|{{Sort|1|Depression}} || bgcolor=#{{storm colour|D}}|{{Sort|45|Not specified}} || bgcolor=#{{storm colour|D}}|{{Sort|999|Not specified}}|| Bangladesh, Myanmar || || ||<ref name="1970 AR"/>
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| Three || {{sort|19700528|May 28&nbsp;– June 2, 1970}} || bgcolor=#{{storm colour|SCS}}|{{sort|4|Severe Cyclonic Storm}} || bgcolor=#{{storm colour|SCS}}|{{sort|095|{{convert|95|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|SCS}}|{{convert|986|hPa|inHg|sigfig=4|abbr=on}} || Saudi Arabia || || ||<ref name="1970 AR"/>
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| Four || {{sort|19700607|June 7–8, 1970}} || bgcolor=#{{storm colour|CS}}|{{sort|3|Cyclonic Storm}} || bgcolor=#{{storm colour|CS}}|{{sort|065|{{convert|65|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|CS}}|{{convert|982|hPa|inHg|sigfig=4|abbr=on|sortable=on}} || West Bengal, Orissa, Madhya Pradesh || || ||<ref name="1970 AR"/>
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| Five || {{Sort|19700629|June 29&nbsp;– July 3, 1970}} || bgcolor=#{{storm colour|DD}}|{{Sort|2|Deep Depression}} || bgcolor=#{{storm colour|DD}}|{{Sort|55|Not specified}} || bgcolor=#{{storm colour|DD}}|{{Sort|45|Not specified}} || Orissa || || ||<ref name="1970 AR"/>
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| Six || {{Sort|19700706|July 6–8, 1970}} || bgcolor=#{{storm colour|DD}}|{{Sort|2|Deep Depression}} || bgcolor=#{{storm colour|DD}}|{{Sort|55|Not specified}} || bgcolor=#{{storm colour|DD}}|{{Sort|45|Not specified}} || Burma, Orissa || || ||<ref name="1970 AR"/>
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| Seven || {{Sort|19700817|August 17–19, 1970}} || bgcolor=#{{storm colour|DD}}|{{Sort|2|Deep Depression}} || bgcolor=#{{storm colour|DD}}|{{Sort|55|Not specified}} || bgcolor=#{{storm colour|DD}}|{{Sort|45|Not specified}} || Burma, Orissa || || ||<ref name="1970 AR"/>
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| Eight || {{sort|19700910|September 2–13, 1970}} || bgcolor=#{{storm colour|CS}}|{{sort|3|Cyclonic Storm}} || bgcolor=#{{storm colour|CS}}|{{sort|100|Not specified}} || bgcolor=#{{storm colour|CS}}|{{sort|1050|Not specified}} || West Bengal, Orissa, Coastal Arabia || || ||<ref name="1970 AR"/>
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| Nine || {{Sort|19700908|September 8–18, 1970}} || bgcolor=#{{storm colour|DD}}|{{Sort|2|Deep Depression}} || bgcolor=#{{storm colour|DD}}|{{Sort|55|Not specified}} || bgcolor=#{{storm colour|DD}}|{{Sort|45|Not specified}} || Burma, West Bengsl || || ||<ref name="1970 AR"/>
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| Ten || {{Sort|19700921|September 21–23, 1970}} || bgcolor=#{{storm colour|D}}|{{Sort|1|Depression}} || bgcolor=#{{storm colour|D}}|{{Sort|45|Not specified}} || bgcolor=#{{storm colour|D}}|{{Sort|1010|Not specified}}|| Andrah Pradesh || || ||<ref name="1970 AR"/>
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| Eleven || {{Sort|19701011|October 11–13, 1970}} || bgcolor=#{{storm colour|D}}|{{Sort|1|Depression}} || bgcolor=#{{storm colour|D}}|{{Sort|45|Not specified}} || bgcolor=#{{storm colour|D}}|{{Sort|1010|Not specified}}|| Saudi Arabia || || ||<ref name="1970 AR"/>
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| Twelve || {{sort|19701018|October 18–22, 1970}} || bgcolor=#{{storm colour|VSCS}}|{{sort|5|Very Severe Cyclonic Storm}} || bgcolor=#{{storm colour|VSCS}}|{{sort|130|{{convert|130|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|VSCS}}|{{convert|980|hPa|inHg|sigfig=4|abbr=on}} || Tamil Nadu, West Bengal, Bangladesh || {{sort|250|200-300}} || ||<ref name="1970 AR"/>
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| [[1970 Bhola cyclone|Thirteen]] || {{sort|19701108|November 8–13, 1970}} || bgcolor=#{{storm colour|ESCS}}|{{sort|6|Extremely Severe Cyclonic Storm}} || bgcolor=#{{storm colour|ESCS}}|{{sort|185|{{convert|185|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|ESCS}}|{{convert|966|hPa|inHg|sigfig=4|abbr=on}} || India, Bangladesh || <!-- ≥500,000 --> || 300,000–500,000 ||<ref name="1970 AR"/>
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| Fourteen || {{Sort|19701119|November 19–20, 1970}} || bgcolor=#{{storm colour|DD}}|{{Sort|2|Deep Depression}} || bgcolor=#{{storm colour|DD}}|{{Sort|55|Not specified}} || bgcolor=#{{storm colour|DD}}|{{Sort|45|Not specified}} || Tamil Nadu || || ||<ref name="1970 AR"/>
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| Fifteen || {{sort|19701122|November 22–29, 1970}} || bgcolor=#{{storm colour|CS}}|{{sort|3|Cyclonic Storm}} || bgcolor=#{{storm colour|CS}}|{{sort|075|{{convert|75|km/h|mph|abbr=on|round=5}}}} || bgcolor=#{{storm colour|CS}}|{{sort|1050|Not specified}} || Somalia || || ||<ref name="1970 AR"/>
|-
{{TC Areas affected (Bottom)|TC's=15&nbsp;systems|dates=May 2&nbsp;– November 29, 1970|winds={{sort|150|{{convert|150|km/h|mph|abbr=on|round=5}}}} || |pres={{convert|975|hPa|inHg|sigfig=4|abbr=on}}|damage=|deaths=|Refs=}}

== See also ==
{{Portal|Tropical cyclones}}
* [[North Indian Ocean tropical cyclone]]
* [[List of tropical cyclone records]]
* [[1970 Atlantic hurricane season]]
* [[1970 Pacific hurricane season]]
* [[1970 Pacific typhoon season]]
* Australian cyclone seasons: [[1969–70 Australian region cyclone season|1969–70]], [[1970–71 Australian region cyclone season|1970–71]]
* South Pacific cyclone seasons: [[1969–70 South Pacific cyclone season|1969–70]], [[1970–71 South Pacific cyclone season|1970–71]]
* South-West Indian Ocean cyclone seasons: [[1969–70 South-West Indian Ocean cyclone season|1969–70]], [[1970–71 South-West Indian Ocean cyclone season|1970–71]]

== References ==

{{reflist|30em}}

{{TC Decades|Year=1970|basin=North Indian Ocean|type=cyclone}}
{{Tropical cyclone season|1970}}

{{DEFAULTSORT:1970 North Indian Ocean Cyclone Season}}
[[Category:1970 North Indian Ocean cyclone season| ]]
[[Category:Tropical cyclones in India]]
[[Category:1970 in India]]
{{Навигационная таблица/Портал/Английская Википедия}}
[[Категория:Английская Википедия]]
[[Категория:Википедия]]
[[Категория:Статья из Википедии]]
[[Категория:Статья из Английской Википедии]]