2011 North Indian Ocean cyclone season

none August 2012 NIO 2011 2011 North Indian Ocean cyclone season summary.png February 2, 2011 December 31, 2011 10 6 2 1 1 Thane 969 75 3 367 total 603 2009, 2010, 2011, 2012, 2013 2011 Atlantic hurricane season 2011 Pacific hurricane season 2011 Pacific typhoon season The 2011 North Indian Ocean cyclone season was the least active tropical cyclone season in the North Indian Ocean since 1993.Yearly and Seasonal Frequency of Cyclones and Depressions http://www.rmcchennaieatlas.tn.nic.in/AnnualFreq_Output.aspx?Param=U2Vhc29uOjE4OTE6MjAxMToxOjI6Mzo6MjozOkJPQitBUytMYW5kOkNTK1NDUw== India Meteorological Department 5 September 2012August 2026 InternetArchiveBot (Note: Creation of an account in the website is required in order to access data.) Only two cyclonic storms formed, below the average of four to six. The North Indian Ocean cyclone season has no official bounds, but cyclones tend to form between April and December, with peaks in May and November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean. The scope of this article is limited to the Indian Ocean in the Northern Hemisphere, east of the Horn of Africa and west of the Malay Peninsula. There are two main seas in the North Indian Ocean — the Arabian Sea to the west of the Indian subcontinent, abbreviated ARB by the India Meteorological Department (IMD); and the Bay of Bengal to the east, abbreviated BOB by the IMD. The systems that form over land are abbreviated as LAND. This season was the first season since 1993 where only two named storms formed. However, the systems that formed would cause damages of greater than $1.64 million USD and cause approximately 360 fatalities. It is believed that La Niña, a quasiperiodic climate pattern which causes a rise in surface pressure over the Indian Ocean, making the region drier, was the main cause for the below-active activity in the basin.Australia says signs El Niño weather pattern forming https://www.reuters.com/article/us-weather-elnino-australia-idUSBRE87D12620120814 Reuters 8 September 2012 Colin Packham August 14, 2012 __TOC__ Season summary This season, 9 depressions developed from low-pressure areas, with six intensifying into deep depressions. Out of the deep depressions, two would develop into cyclonic storms. One of the cyclonic storms would later intensify into a severe cyclonic storm. The first depression of the season developed on February 2 about 300 km mi on to the east of Colombo, Sri Lanka. The depression brought isolated rainfall to parts of Sri Lanka, while remaining near stationary before weakening into an area of low pressure early the next day. Depression ARB 01 formed in early June near India, before Deep Depression BOB 02 formed a few days later. Land Depression 01 formed on July 22, and dissipated a day later. Depression BOB 03 formed on September 22, and soon made landfall on India. Depression BOB 03 dissipated the next day, on September 23. October was a much more active month, as Deep Depression BOB 04 and Deep Depression ARB 02 both formed, during this period of time. Then Cyclonic Storm Keila formed in November and came ashore in Oman, before Depression ARB03 formed and dissipated near the Oman coast. Systems Depression BOB 01 NIO BOB 01 - 2 feb.jpg BOB01 2011 track.png February 2 February 3 25 1002 On February 2, the IMD upgraded an area of low pressure, located approximately 100 km southeast of Pottuvil, Sri Lanka, to a depression, giving it the designation "BOB 01."IMD Cyclonic Bulletin 01 For Depression BOB 01 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm India Meteorological Department February 2, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy The convection in the system gradually increased and the system drifted towards land.Tropical Weather Outlook — February 2, 1400z http://www.imd.gov.in/section/nhac/dynamic/rsmc.htm India Meteorological Department February 3, 2011 dead https://web.archive.org/web/20120106212829/http://www.imd.gov.in/section/nhac/dynamic/rsmc.htm January 6, 2012 mdy Early on the next day, the IMD downgraded the system into a remnant low because of its proximity to land and weakened.IMD Cyclonic Bulletin 04 for Depression BOB 01 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm India Meteorological Department February 3, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy Following catastrophic floods in December 2010 and January 2011, the depression brought additional rainfall to Sri Lanka.Staff Writer Colombo Page February 4, 2011 February 4, 2011 Six dead, over 250,000 affected in Sri Lanka floods http://www.colombopage.com/archive_11/Feb04_1296836952JR.php https://web.archive.org/web/20110207045949/http://www.colombopage.com/archive_11/Feb04_1296836952JR.php February 7, 2011 usurped The subsequent floods and mudslides killed 18 people and affected nearly 1.2 million. Numerous roads were washed away as reservoirs across the island overflowed their banks and inundated surrounding communities. In the wake of the floods, the Government of Sri Lanka allocated 33 billion Sri Lankan rupee ($287 million US$) for rehabilitation.UN Office for the Coordination of Humanitarian Affairs ReliefWeb February 11, 2011 November 11, 2011 Sri Lanka: Monsoon Flood Update Situation Report 13 http://reliefweb.int/sites/reliefweb.int/files/resources/74102ABFE9DAC5BAC12578360031639B-Full_Report.pdf Depression ARB 01 NIO ARB 01 11 June 2011 MODIS.jpg ARB01 2011 track.png June 11 June 12 35 25 996 In early June, a low-pressure area formed over the Arabian Sea. The low-pressure area remained stationary and became more well marked. On June 11, the IMD upgraded the area of low pressure to a depression giving it the designation "ARB 01".IMD Cyclone Bulletin 01 For Depression ARB 01 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm India Meteorological Department June 11, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy The same day, the JTWC designated the system as Tropical Cyclone 01A.Tropical Cyclone 01A Warning 01 by JTWC http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io0111web.txt Joint Typhoon Warning Center June 11, 2011 dead https://archive.today/20240522105745/https://www.webcitation.org/5zMiTMewY?url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io0111web.txt May 22, 2024 mdy At that time it was located approximately 180 km mi northwest of Mumbai, India and 150 km mi southeast of Veraval, Gujarat. Later, on June 12, IMD reported that the depression had crossed the Saurashtra coast of India about 25 km east of Diu.IMD Cyclone Bulletin 04 For Depression ARB 01 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm India Meteorological Department June 12, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy Later on the same day, the IMD reported that the depression had weakened into a well-marked low-pressure area in their last bulletin for the system.IMD Cyclone Bulletin 06 For Depression ARB 01 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm India Meteorological Department June 12, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy Deep Depression BOB 02 NIO Deep Depressin BOB 02 16 June 2011.jpg BOB02 2011 track.png deepdepression June 16 June 23 35 978 On June 16, the IMD upgraded a well marked low-pressure area (WML), located about 100 km east-southeast of Sagar Island, 150 km southeast of Kolkata and 150 km west-southwest of Khepupara (Bangladesh), to a depression, giving it the designation "BOB 02".IMD Cyclonic Bulletin 01 For Depression BOB 02 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm India Meteorological Department June 16, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy On June 16, the depression intensified into a deep depression and crossed the West Bengal coast about 100 km east of Sagar Island.IMD Cyclonic Bulletin 03 For Depression BOB 02 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm India Meteorological Department June 16, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy On the same day, at 1900 hrs UTC, the JTWC issued a Tropical Cyclone Formation Alert (TCFA).JTWC TCFA issued for BOB 02 http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io9911web.txt Joint Typhoon Warning Center June 17, 2011 dead https://archive.today/20240522105823/https://www.webcitation.org/5zVzpv4SP?url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io9911web.txt May 22, 2024 mdy The system drifted further inland and the JTWC cancelled their TCFA the next day.JTWC TCFA cancellation for BOB 02 http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io9911web.txt Joint Typhoon Warning Center June 17, 2011 dead https://archive.today/20240522105823/https://www.webcitation.org/5zVzpv4SP?url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io9911web.txt May 22, 2024 mdy The system weakened into a depression by June 18 and laid centered over Jharkhand.IMD Cyclonic Bulletin 15 For Deep Depression BOB 02 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm India Meteorological Department June 18, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy The depression gradually drifted westwards and moved onto northern Madhya Pradesh by June 21.IMD Cyclonic Bulletin 21 For Deep Depression BOB 02 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm India Meteorological Department June 21, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy and slowly dissipated into a well marked low-pressure area on June 23.IMD Cyclonic Bulletin 30 For Deep Depression BOB 02 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm India Meteorological Department June 21, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy Heavy rains across West Bengal triggered widespread flooding and landslides that killed at least six people.Raktima Bose The Hindu June 17, 2011 November 11, 2011 Heavy rain claims 6 lives in West Bengal https://www.thehindu.com/news/national/other-states/heavy-rain-claims-6-lives-in-west-bengal/article2112464.ece Chennai, India Depression LAND 01 NIO LAND 01 Jul 22 2011 0735Z.jpg 2011 NIO Land depression 01 track.png July 22 July 23 20 990 On July 21 as the Madden–Julian oscillation entered its fifth phase, the Bay of Bengal became favourable for tropical cyclogenesis. As a result of this and an upper tropospheric cyclonic vortex, an area of low pressure developed on July 21, over the Gangetic West Bengal about 50 km mi 5 on to the southeast of Daltonganj. During the next day the IMD reported that the low-pressure area had intensified into a land depression, with peak 3-minute sustained windspeeds of 35 km/h mph on 5. During that day, the depression moved towards the northwest under the influence of a monsoon trough before it weakened into a low-pressure area during July 23.http://www.imd.gov.in/section/nhac/dynamic/cwind.htm https://archive.today/20240522105901/https://www.webcitation.org/60RPvqtPO?url=http://gwydir.demon.co.uk/advisories/IMD%20Cyclone%20Warning%20(CWIND)_201107230600.htm Cyclone Warning For Indian Coast, Land Depression 01, Warning 4 Regional Specialised Meteorological Center New Delhi, India July 23, 2011 India Meteorological Department April 9, 2012 May 22, 2024 dead mdy Under the influence of the system, the Indian states of Madhya Pradesh, Rajasthan, Gujarat, Chhattisgarh and Vidarbha saw widespread heavy rainfall, however, no economic damage was reported.Land Depression 01 Preliminary report India Meteorological Department http://www.imd.gov.in/section/nhac/dynamic/22-23July.docx October 3, 2011 Regional Specialised Meteorological Center New Delhi, India https://web.archive.org/web/20120330124718/http://www.imd.gov.in/section/nhac/dynamic/22-23July.docx March 30, 2012 dead mdy-all Depression BOB 03 NIO Depression BOB 03 September 22 2011.jpg BOB03 2011 track.png September 22 September 23 25 995 Late on September 20, an area of low pressure developed approximately 200 nmi south of Chittagong, Bangladesh.JTWC — Tropical Cyclone Warning 201800 – Depression BOB 03 http://gwydir.demon.co.uk/advisories/ABIO10-PGTW_201109201800.htm Joint Typhoon Warning Center September 22, 2011 dead https://archive.today/20240522105941/https://www.webcitation.org/61t22GjWr?url=http://gwydir.demon.co.uk/advisories/ABIO10-PGTW_201109201800.htm May 22, 2024 mdy Under the influence of strong vertical wind shear and monsoonal activity in the Bay of Bengal, the system was unable to strengthen and the JTWC later reported that the system had dissipated.JTWC — Tropical Cyclone Warning 211800 – Depression BOB 03 http://gwydir.demon.co.uk/advisories/ABIO10-PGTW_201109211800.htm Joint Typhoon Warning Center September 22, 2011 dead https://archive.today/20240522110022/https://www.webcitation.org/61t2FsTxI?url=http://gwydir.demon.co.uk/advisories/ABIO10-PGTW_201109211800.htm May 22, 2024 mdy However, on September 22, the IMD started monitoring the system as a Depression and initiated bulletins on the system, designating it BOB 03.IMD — Tropical Cyclone Bulletin 01 – Depression BOB 03 http://gwydir.demon.co.uk/advisories/IMD%20Cyclone%20Warning%20(CWIND)_201109220700.htm India Meteorological Department September 22, 2011 dead https://archive.today/20240522110103/https://www.webcitation.org/61t2ViAAV?url=http://gwydir.demon.co.uk/advisories/IMD%20Cyclone%20Warning%20(CWIND)_201109220700.htm May 22, 2024 mdy Late on that day, BOB 03 drifted northwest and made landfall over north Orissa close to Balasore.IMD — Tropical Cyclone Bulletin 04 – Depression BOB 03 http://gwydir.demon.co.uk/advisories/IMD%20Cyclone%20Warning%20(CWIND)_201109222100.htm India Meteorological Department September 23, 2011 dead https://archive.today/20240522110146/https://www.webcitation.org/61uBWj4Tn?url=http://gwydir.demon.co.uk/advisories/IMD%20Cyclone%20Warning%20(CWIND)_201109222100.htm May 22, 2024 mdy After moving further northwestwards, the depression remained practically stationary over Jharkhand. By the evening of September 23, IMD reported that the depression had weakened into a well-marked low-pressure area in their final bulletin for the system, as the storm dissipated to a remnant low.IMD — Tropical Cyclone Bulletin 08 – Depression BOB 03 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm India Meteorological Department September 23, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy As the depression made landfall, heavy rains threatened to cause floods for the second time within two weeks in the Bramhani and Baitarani rivers. By the evening of September 22, 90 villages in Jajpur were displaced due to the sudden swelling of the Baitarani River.Fresh flood fear looms in 5 Orissa districts http://timesofindia.indiatimes.com/city/bhubaneswar/Fresh-flood-fear-looms-in-5-Orissa-districts/articleshow/10088587.cms The Times of India September 23, 2011 September 23, 2011 At least 38 people were killed in flood-related incidents across Orissa. The worst flooding took place in the districts of Jajpur and Bhadrak where at least 18 people perished.Outlook India September 28, 2011 November 11, 2011 Orissa Flood Toll Mounts to 38, Relief Operation Begins http://news.outlookindia.com/items.aspx?artid=736543 https://web.archive.org/web/20120614061349/http://news.outlookindia.com/items.aspx?artid=736543 June 14, 2012 dead mdy-all Deep Depression BOB 04 NIO Deep Depression BOB04 Oct 19 2011.jpg BOB04 2011 track.png October 19 October 20 30 40 996 A low-pressure area over the Bay of Bengal intensified, and was upgraded to Depression BOB 04 on October 19, 2011.IMD Cyclone Warning 1 for BOB 04 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm IMD October 19, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 The depression intensified slightly and the IMD upgraded the storm into a Deep Depression the same day.IMD Bulletin 3 for BOB 04 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm IMD October 19, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 Later on the same day, the JTWC upgraded the system into a Tropical Storm. The system moved inland and weakened into a depression. The weakening process took place gradually as the storm moved more inland and dissipated into a remnant low.IMD IMD Final Bulletin for Deep Depression BOB 04 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm IMD October 20, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy Along the border between Myanmar and Bangladesh, torrential rains produced devastating flash floods. In the Magway region, roughly 2,000 homes were washed away by a "mass of water" and more than 6,000 remained flooded for days. Initial estimates placed damage from the storm at $1.64 million.Agence France-Presse Australian Broadcasting Corporation October 24, 2011 November 11, 2011 More than 100 dead in Burma floods http://www.abc.net.au/news/2011-10-24/scores-dead-in-burma-floods/3596416 At least 215 people were confirmed to have been killed with many more missing. Officials in the hard-hit town of Pakokku believed that the death toll would exceed 300 as residents searched for missing relatives days after the floods.Than Win Htut Democratic Voice of Burma October 24, 2011 November 11, 2011 Burma flooding deaths top 200 http://www.dvb.no/news/burma-flooding-deaths-top-200/18344 https://web.archive.org/web/20111229070738/http://www.dvb.no/news/burma-flooding-deaths-top-200/18344 December 29, 2011 dead Similar to what took place in the wake of Cyclone Nargis in 2008, journalists were warned by the Government not to take pictures of the disaster. Overall, it is the deadliest tropical cyclone in the North Indian Ocean since Cyclone Aila in 2009.Naw Noreen Democratic Voice of Burma October 25, 2011 November 11, 2011 Thousands of flood victims lacking aid http://www.dvb.no/news/thousands-of-flood-victims-lacking-aid/18383 https://web.archive.org/web/20111030105119/http://www.dvb.no/news/thousands-of-flood-victims-lacking-aid/18383 October 30, 2011 dead Cyclonic Storm Keila Cyclone Keila NIO Keila Nov 2 2011 0920Z.jpg Keila 2011 track.png October 29 November 4 35 55 996 Under the influence of a low-level trough, a low-pressure area formed over the Arabian Sea in late October. The system organized and the IMD designated the system Depression "ARB 02".IMD IMD Bulletin 1 for ARB 02 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm IMD October 29, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy The depression moved toward the Middle East during the next few days and intensified into a Deep Depression on November 1.IMD IMD Bulletin for Deep Depression ARB 02 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm IMD November 1, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy In the morning of November 2, IMD upgraded the deep depression into a cyclonic storm and assigned it the name Keila.The name Keila (Dhivehi: ކޭލަ, [keːla]) was contributed by the Maldives and refers to the six-finger threadfin (Polydactylus sexfilis) in Dhivehi. Heavy rains from the storm in Oman were blamed on at least 14 deaths and 200 people are injured. High flood waters prompted the evacuation of hospitals in the capital city of Muscat.Al Arabia November 3, 2011 November 3, 2011 14 killed and 200 injured as tropical storm sweeps across Oman http://english.alarabiya.net/articles/2011/11/03/175291.html https://web.archive.org/web/20111104001549/http://english.alarabiya.net/articles/2011/11/03/175291.html November 4, 2011 dead mdy-all On November 3, JTWC downgraded the storm into a tropical depression. On the same day, JTWC issued their final advisories on this system. In the evening, IMD downgraded the storm into a deep depression. On November 4, IMD downgraded the depression into an area of low pressure, issuing its final advisory on the system.IMD IMD Final Warning for Keila http://www.imd.gov.in/section/nhac/dynamic/rsmc.htm IMD November 4, 2011 dead https://web.archive.org/web/20120106212829/http://www.imd.gov.in/section/nhac/dynamic/rsmc.htm January 6, 2012 mdy Deep Depression ARB 03 NIO ARB 03 Nov 7 2011 0635Z.jpg ARB03 2011 track.png November 6 November 10 30 35 1000 On November 6, the IMD upgraded a low-pressure area into a Depression, designating it ARB 03. The system was forecasted to intensify into a deep depression and move towards the Gulf of Aden in the next 72 hours.IMD IMD Bulletin 1 for ARB 03 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm IMD November 6, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy On the same day a TCFA was issued by the JTWC.JTWC JTWC TCFA For ARB 03 http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io9611web.txt JTWC November 7, 2011 dead https://web.archive.org/web/20120118151400/http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io9611web.txt January 18, 2012 mdy The IMD upgraded the storm into a deep depression on November 8, and forecasted that it would intensify into a cyclonic storm within the next 24 hoursIMD IMD Deep Depression ARB 03 Warning 5 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm IMD November 8, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy which was followed by an upgrade to a tropical storm by JTWC.JTWC JTWC Tropical Cyclone 04A Warning 4 http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io0411web.txt JTWC November 8, 2011 dead https://archive.today/20240522110223/https://www.webcitation.org/634IB8pEx?url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io0411web.txt May 22, 2024 mdy Under the influence of unfavorable conditions and proximity to land, the system weakened and JTWC issued its final warning.JTWC JTWC Final Warning for Deep Depression ARB 03 http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io0411web.txt JTWC November 9, 2011 dead https://archive.today/20240522110223/https://www.webcitation.org/634IB8pEx?url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io0411web.txt May 22, 2024 mdy Soon the IMD downgraded the storm into a depression.IMD IMD RSMC Bulletin for 9 November 2011 http://www.imd.gov.in/section/nhac/dynamic/rsmc.htm IMD November 9, 2011 dead https://web.archive.org/web/20120106212829/http://www.imd.gov.in/section/nhac/dynamic/rsmc.htm January 6, 2012 mdy On November 10, the storm dissipated into a low-pressure area.IMD IMD Final Bulletin for ARB 03 http://www.imd.gov.in/section/nhac/dynamic/rsmc.htm IMD November 10, 2011 dead https://web.archive.org/web/20120106212829/http://www.imd.gov.in/section/nhac/dynamic/rsmc.htm January 6, 2012 mdy Deep Depression ARB 04 NIO Deep Depression ARB 04 on 29 Nov near Peak Intensity.png ARB04 2011 track.png November 26 December 1 30 35 998 On November 26, at 11:30 am IST, the IMD upgraded a low-pressure area south of India near Cape Comorin into a depression, giving it the designation ARB 04.IMD IMD Warning Bulletin 1 for ARB 04 http://gwydir.demon.co.uk/advisories/IMD%20Cyclone%20Warning%20(CWIND)_201111260600.htm IMD November 26, 2011 dead https://archive.today/20240522110345/https://www.webcitation.org/63TmZXFt9?url=http://gwydir.demon.co.uk/advisories/IMD%20Cyclone%20Warning%20(CWIND)_201111260600.htm May 22, 2024 mdy The same day, the JTWC upgraded the storm from a tropical depression to a Tropical Storm and named it 05A.JTWC JTWC Tropical Storm Warning 2 for 05A http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201111260900.htm JTWC November 26, 2011 dead https://archive.today/20240522110303/https://www.webcitation.org/63TmFj4Yw?url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201111260900.htm May 22, 2024 mdy Extensive damage and loss of life was reported in Sri Lanka, where the storm was linked with heavy rains which caused 19 deaths and damage to 5,700 homes.AFP Sri Lanka storm kills 19, damages 5,700 homes https://www.google.com/hostednews/afp/article/ALeqM5gTZ0ISrN3pzhognqLPXYGYupMRjw?docId=CNG.3897a3194b0d48ccca8b58b0c2a9d105.591 November 27, 2011 AFP November 27, 2011 dead https://archive.today/20240522110425/https://www.webcitation.org/63Vnhm01u?url=http://www.google.com/hostednews/afp/article/ALeqM5gTZ0ISrN3pzhognqLPXYGYupMRjw%3FdocId=CNG.3897a3194b0d48ccca8b58b0c2a9d105.591 May 22, 2024 mdy The IMD upgraded the storm to a Deep Depression on November 28.IMD IMD Upgradation to Deep depression http://www.imd.gov.in/section/nhac/dynamic/cwind.htm IMD November 28, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy Later on November 29 the IMD downgraded the storm into a depression.IMD IMD ARB 04 Bulletin 19 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm IMD November 29, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy Following the downgrading of the storm by IMD, the JTWC on November 30 issued their final warning on 05A. The IMD reported on December 1 that the storm had weakened into a well-marked low-pressure area, and issued the final bulletin for the system.IMD IMD Final Warning for ARB 04 http://www.imd.gov.in/section/nhac/dynamic/cwind.htm IMD December 1, 2011 dead https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm December 22, 2011 mdy Very Severe Cyclonic Storm Thane Cyclone Thane NIO Thane 2011 track.png Thane 2011 Dec 29 0735Z.jpg December 25 December 31 75 90 969 On December 23, the JTWC reported that a tropical disturbance had developed within the monsoon trough about 960 mi km flip 5 on to the east of Medan in Indonesia.Joint Typhoon Warning Center http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abioweb.txt https://web.archive.org/web/20120101121351/http://weather.noaa.gov/pub/data/raw/ab/abio10.pgtw..txt Significant Tropical Weather Advisory for the Indian Ocean 2011-12-23 03z January 1, 2012 dead United States Navy, United States Air Force December 28, 2011Significant Tropical Weather Advisory for the Indian Ocean 2011-12-24 03z http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/ab/abioweb.txt https://archive.today/20240522062455/https://www.webcitation.org/64AckF6J2?url=http://gwydir.demon.co.uk/advisories/ABIO10-PGTW_201112240300.htm December 28, 2011 Joint Typhoon Warning Center United States Navy, United States Air Force dead May 22, 2024 Convection surrounding the system had started to consolidate over a weak low level circulation centre, that was being fed by an enhanced westerly flow associated with the precursor system to Tropical Cyclone Benilde. Over the next couple of days the disturbance gradually developed further while moving towards the northwest, before the JTWC issued a TCFA on the system during December 25 before designating as Tropical Cyclone 06B later that day.United States Navy, United States Air Force https://web.archive.org/web/20111021124226/http://weather.noaa.gov/pub/data/raw/wt/wtio21.pgtw..txt http://weather.noaa.gov/pub/data/raw/wt/wtio21.pgtw..txt October 21, 2011 Tropical Cyclone Formation Alert 2011-12-25 11z December 25, 2011 Joint Typhoon Warning Center December 30, 2011 live mdy http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201112252100.htm JTWC Tropical Cyclone 06B (Thane) Warning December 25, 2011 21z United States Navy, United States Air Force December 25, 2011 Joint Typhoon Warning Center December 30, 2011 dead https://archive.today/20240522062534/https://www.webcitation.org/64DVzNKSO?url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201112252100.htm May 22, 2024 mdy The IMD also reported during December 25, that the disturbance had organised sufficiently to be declared Depression BOB 05, while it was located about 1000 km mi 5 on to the southeast of Chennai, India.Unattributed Special Tropical Weather Outlook for the North Indian Ocean 2011-12-25 15z Regional Specialised Meteorological Center New Delhi, India India Meteorological Department December 29, 2011 http://www.imd.gov.in/section/nhac/dynamic/rsmc.htm December 25, 2011 dead https://web.archive.org/web/20120106212829/http://www.imd.gov.in/section/nhac/dynamic/rsmc.htm January 6, 2012 mdy During the next day, the IMD reported that the depression had intensified into a Deep Depression, before later that day reporting that it had intensified into Cyclonic Storm Thane.The name Thane (Burmese: သိမ်း, [θèɪɰ̃]) was contributed by Myanmar and refers to the Eurasian sparrowhawk (Accipiter nisus) in Burmese.Unattributed Special Tropical Weather Outlook for the North Indian Ocean 2011-12-26 03z Regional Specialised Meteorological Center New Delhi, India India Meteorological Department December 29, 2011 http://gwydir.demon.co.uk/advisories/IMD%20Advisory-Outlook%20(RSMC)_201112260400.htm December 26, 2011 dead https://archive.today/20240522062615/https://www.webcitation.org/64DWbWxTO?url=http://gwydir.demon.co.uk/advisories/IMD%20Advisory-Outlook%20(RSMC)_201112260400.htm May 22, 2024 mdy Special Tropical Weather Outlook for the North Indian Ocean 2011-12-26 21z India Meteorological Department December 29, 2011 http://gwydir.demon.co.uk/advisories/IMD%20Advisory-Outlook%20(RSMC)_201112262100.htm Regional Specialised Meteorological Center New Delhi, India December 26, 2011 dead https://archive.today/20240522062656/https://www.webcitation.org/64F30IlgZ?url=http://gwydir.demon.co.uk/advisories/IMD%20Advisory-Outlook%20(RSMC)_201112262100.htm May 22, 2024 mdy As it was named, Thane started to turn towards the west under the influence of a subtropical ridge of high pressure before its development slowed as strong outflow and marginally favourable sea surface temperatures fought with persistent easterly vertical wind shear.http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201112262100.htm JTWC Tropical Cyclone 06B (Thane) Warning 2011-12-27 03z December 27, 2011 December 30, 2011 Joint Typhoon Warning Center United States Navy, United States Air Force dead https://archive.today/20240522062733/https://www.webcitation.org/64F3R0gIx?url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201112262100.htm May 22, 2024 mdy http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201112280300.htm Joint Typhoon Warning Center United States Navy, United States Air Force JTWC Tropical Cyclone 06B (Thane) Warning 2011-12-28 03z December 28, 2011 December 30, 2011 dead https://archive.today/20240522062937/https://www.webcitation.org/64GUI85G8?url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201112280300.htm May 22, 2024 mdy Early on December 28, the JTWC reported that Thane had become the equivalent to a category one hurricane on the SSHS before later that day the IMD reported that Thane had become the first Very Severe Cyclonic Storm of the season.JTWC Tropical Cyclone 06B (Thane) Warning 2011-12-27 09z http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io0611web.txt December 29, 2011 December 28, 2011 Joint Typhoon Warning Center United States Navy, United States Air Force dead https://archive.today/20240522062817/https://www.webcitation.org/64GlU1qpN?url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/warnings/io0611web.txt May 22, 2024 mdy IMD Tropical Cyclone Thane Advisory Number:15 December 28, 2011 1500z Regional Specialised Meteorological Center New Delhi, India India Meteorological Department December 29, 2011 http://gwydir.demon.co.uk/advisories/IMD%20Advisory-Outlook%20(RSMC)_201112281500.htm December 28, 2011 dead https://archive.today/20240522062857/https://www.webcitation.org/64GsbOn1J?url=http://gwydir.demon.co.uk/advisories/IMD%20Advisory-Outlook%20(RSMC)_201112281500.htm May 22, 2024 mdy During December 28, Thane continued to intensify, and developed a small pinhole eye, before the JTWC reported that Thane had attained its peak intensity early on December 29 with 1-minute sustained wind speeds of 165 km/h mph on 5.Tropical Cyclone 06B (Thane) Warning 2011-12-28 09z United States Navy, United States Air Force May 22, 2024 http://weather.noaa.gov/pub/data/raw/wt/wtio31.pgtw..txt https://archive.today/20240522063056/https://www.webcitation.org/64I0HaMTf?url=http://gwydir.demon.co.uk/advisories/WTIO31-PGTW_201112290900.htm December 29, 2011 Joint Typhoon Warning Center dead mdy http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/best_tracks/2011/2011s-bio/bio062011.dat https://web.archive.org/web/20120608224715/http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/best_tracks/2011/2011s-bio/bio062011.dat dead June 8, 2012 Tropical Cyclone 06B (Thane) Best Track Analysis United States Navy, United States Air Force Joint Typhoon Warning Center May 5, 2012 May 5, 2012 The IMD then followed suit and reported that the system had peaked as a Very Severe Cyclonic Storm with 3-minute sustained windspeeds of 140 km/h mph on 5.Regional Specialised Meteorological Center New Delhi, India December 29, 2011 http://gwydir.demon.co.uk/advisories/IMD%20Advisory-Outlook%20(RSMC)_201112290700.htm India Meteorological Department December 29, 2011 IMD Tropical Cyclone Thane Advisory Number:20 2011-12-29 06z dead https://archive.today/20240522063018/https://www.webcitation.org/64I00W2zR?url=http://gwydir.demon.co.uk/advisories/IMD%20Advisory-Outlook%20(RSMC)_201112290700.htm May 22, 2024 mdy During the rest of that day, the system continued to move westwards and weakened slightly as it started to interact with land. Thane then made landfall as a very severe cyclonic storm early on December 30 on the north Tamil Nadu coast between Cuddalore and Pondicherry. After making landfall, Thane rapidly weaken into a depression before the JTWC issued their final advisory during December 30, while the IMD continued to monitor the remnants of Thane until the depression weakened into a well marked low-pressure area on December 31.Regional Specialised Meteorological Center New Delhi, India India Meteorological Department December 29, 2011 http://www.imd.gov.in/section/nhac/dynamic/rsmc.html https://web.archive.org/web/20111222014118/http://www.imd.gov.in/section/nhac/dynamic/cwind.htm Tropical Cyclone Thane Advisory Number:37 December 31, 2011 03z December 22, 2011 dead mdy-all Overall, Thane was responsible for the deaths of 46 people with total damage to India, estimated at between 13 – 15000000000 rupees (235 – 275000000 USD).The damage total was originally reported in crore of rupees and was converted via the Oanda Corporation website using the rates for January 1, 2012.Oanda Corporation Historical Exchange Rates August 17, 2012 August 18, 2012 http://www.oanda.com/currency/historical-rates/3 MAUSAM Khole, Medha Sunitha Devi, S. Mande, M. V. June 5, 2012 63 369–376 http://metnet.imd.gov.in/mausamdocs/46331.pdf August 18, 2012 Cyclones and depressions over the North Indian Ocean during 2011 551.515.1 (267) “2011” India Meteorological Department 10.54302/mausam.v63i3.1210 2012Mausa..63..369. 245638544 https://web.archive.org/web/20180918030856/http://metnet.imd.gov.in/mausamdocs/46331.pdf September 18, 2018 live mdy Season effects |- | BOB 01 || 0202 February 2–3 || bgcolor=#DI|1 Depression || bgcolor=#DI|045 45 km/h mph on 5 || bgcolor=#DI| 1002 || Sri Lanka ||297 million || 18 ||UN Office for the Coordination of Humanitarian Affairs ReliefWeb February 11, 2011 November 11, 2011 Sri Lanka: Monsoon Flood Update Situation Report 13 http://reliefweb.int/sites/reliefweb.int/files/resources/74102ABFE9DAC5BAC12578360031639B-Full_Report.pdf |- | ARB 01 || 0611 June 11–12 || bgcolor=#DI|1 Depression || bgcolor=#DI|045 45 km/h mph on 5 || bgcolor=#DI|996 || India || || None || |- | BOB 02 || 0616 June 16–23 || bgcolor=#TD|2 Deep Depression || bgcolor=#TD|065 65 km/h mph on 5 || bgcolor=#TD|978 || India || || 6 || |- | LAND 01 || 0722 July 22–23 || bgcolor=#DI|1 Depression || bgcolor=#DI|35 35 km/h mph on 5 || bgcolor=#DI|990 || India || || 0 || |- | BOB 03 || 0922 September 22–23 || bgcolor=#DI|1 Depression || bgcolor=#DI|045 45 km/h mph on 5 || bgcolor=#DI|995 || India || || 42 || |- | BOB 04 || 1019 October 19–20 || bgcolor=#TD|2 Deep Depression || bgcolor=#TD|055 55 km/h mph on 5 || bgcolor=#TD|1002 || Bangladesh, Myanmar || 1640000 || 215 || |- | Keila || 1029 October 29 – November 4 || bgcolor=#A1|3 Cyclonic Storm || bgcolor=#A1|065 65 km/h mph on 5 || bgcolor=#A1|996 || Oman, Yemen || $80 million || 14 || |- | ARB 03 || 1106 November 6 – November 10 || bgcolor=#TD|2 Deep Depression || bgcolor=#TD|055 55 km/h mph on 5 || bgcolor=#TD|1000 || colspan=3 style="text-align:center;" |No land areas affected.|| |- | ARB 04 || 1126 November 26 – December 1 || bgcolor=#TD|2 Deep Depression || bgcolor=#TD|055 55 km/h mph on 5 || bgcolor=#TD|998 || Lakshadweep, India, Sri Lanka|| None || 19 || |- | Thane || 1225 December 25 – December 31 || bgcolor=#vsvrcyclstorm|5 Very Severe Cyclonic Storm || bgcolor=#vsvrcyclstorm|140 140 km/h mph on 5 || bgcolor=#vsvrcyclstorm|969 || India || 235000000 || 46 || |- 10 systems February 2 – December 30 140 km/h mph on 5 969 hPa inHg 4 on >603640000 $ >360 See also Tropical cyclones List of North Indian cyclone seasons Tropical cyclones in 2011 2011 Atlantic hurricane season 2011 Pacific hurricane season 2011 Pacific typhoon season South-West Indian Ocean cyclone seasons: 2010–11 2011–12 Australian region cyclone seasons: 2010–11 2011–12 South Pacific cyclone seasons: 2010–11 2011–12 South Atlantic tropical cyclone Notes References 2 External links India Meteorological Department Joint Typhoon Warning Center https://web.archive.org/web/20150809201922/http://www.usno.navy.mil/JTWC/ August 9, 2015 2010 North Indian Ocean cyclone 2011 Category:Articles which contain graphical timelines 2011 NIO