2004 North Indian Ocean cyclone season

none NIO 2004 2004 North Indian Ocean cyclone season summary.png May 5, 2004 December 2, 2004 BOB 01 952 90 3 9 7 4 4 1 1 587 total 129.8 2002, 2003, 2004, 2005, 2006 2004 Atlantic hurricane season 2004 Pacific hurricane season 2004 Pacific typhoon season The 2004 North Indian Ocean cyclone season was the first in which tropical cyclones were officially named in the basin. Cyclone Onil, which struck India and Pakistan, was named in late September. The final storm, Cyclone Agni, became one of the storms closest to the equator. The season was fairly active, with ten depressions forming from May to November. The India Meteorological Department designated four of these as cyclonic storms, which have maximum sustained winds of at least 65 km/h mph on 5 averaged over three minutes. The Joint Typhoon Warning Center also issued warnings for five of the storms on an unofficial basis. In early May, two tropical storms formed in the basin The first formed on May 5 and meandered while intensifying, dropping 1840 mm in on in Aminidivi in the Lakshadweep group offshore western India, which was the highest daily rainfall total in the basin. A week later, a cyclone – the strongest of the season – struck Myanmar, killing 236 people and leaving 25,000 people homeless. Depressions also formed on opposite sides of India in June. A depression in September killed 59 people after dropping torrential rainfall over Bangladesh and adjacent West Bengal. In October, another depression struck the region, killing 273 people. A short-lived cyclonic storm would form in the Arabian Sea in November. __TOC__ Season summary The India Meteorological Department (IMD) was designated a Regional Specialized Meteorological Center by the World Meteorological Organization in July 1988 to monitor and warn on tropical cyclones in the northern Indian Ocean. The basin is defined between 45° and 100° E, and north of the equator. The agency also used geostationary satellites and a network of buoys to track the storms, and utilized various tropical cyclone forecast models to predict future tracks. The American-based Joint Typhoon Warning Center (JTWC) also issued warnings for storms in the basin on an unofficial basis. The monsoon became active in May as water temperatures became warm.2 Darwin Regional Specialised Meteorological Centre Bureau of Meteorology May 2004 Darwin Tropical Diagnostic Statement 2015-05-24 http://www.bom.gov.au/climate/ntregion/statements/tropical/dtds-200405.pdf 2015-06-07 https://web.archive.org/web/20150607231439/http://www.bom.gov.au/climate/ntregion/statements/tropical/dtds-200405.pdf dead Twin depressions formed during June on opposite sides of India, which helped intensify the monsoon over the country. A notable feature of the season was the Arabian Sea being more active than the Bay of Bengal. The IMD began naming tropical cyclones within the basin in 2004, beginning after the monsoon season. As such, only two cyclonic storms in the latter half of the year were named. Systems Severe Cyclonic Storm ARB 01 NIO 01A 2004-05-07 0825Z.jpg Cyclone 01A 2004 track.png May 5 May 10 45 55 984 Toward the end of April, an area of convection persisted in the southern Bay of Bengal.Gary Padgett 2000 2015-05-24 Monthly Tropical Weather Summary for May 2004 http://australiasevereweather.com/cyclones/2004/summ0405.htm 2012-02-12 https://web.archive.org/web/20120212021312/http://www.australiasevereweather.com/cyclones/2004/summ0405.htm live It developed into a distinct low-pressure area on May 1 over the body of water, but soon moved westward into India without developing. On May 4, the system emerged from Kerala into the Arabian Sea,Report on Cyclonic Disturbances Over North Indian Ocean During 2004 India Meteorological Department January 2005 2015-05-24 http://www.rsmcnewdelhi.imd.gov.in/images/pdf/archive/rsmc/2004.pdf 2015-04-02 https://web.archive.org/web/20150402104124/http://www.rsmcnewdelhi.imd.gov.in/images/pdf/archive/rsmc/2004.pdf live and soon after convection rapidly increased. Early on May 5, the JTWC classified the system as Tropical Cyclone 01A about 370 km (230 mi) west-southwest of Kochi, India. On the same day, the IMD began classifying it as a depression, but soon after upgraded it to a deep depression and later cyclonic storm after increased organization. The storm meandered off southwest India for three days due to weak steering currents. During that time, the convection pulsed around the circulation, and the IMD upgraded it to a severe cyclonic storm on May 7 with winds of 100 km/h mph on 5. By contrast, the JTWC only estimated peak winds of 85 km/h mph on 5.Joint Typhoon Warning Center United States Navy 2015-05-24 Annual Tropical Cyclone Report http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/atcr/2004atcr.pdf 2013-12-06 https://web.archive.org/web/20131206154117/http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/atcr/2004atcr.pdf dead Increased wind shear, cooler waters, and dry air rapidly weakened the convection, exposing the center and causing the storm to deteriorate quickly into a depression. On May 10, the system degenerated into a remnant low off Gujarat, without any discernible low-level circulation. The precursor to the storm brought heavy rainfall to southern India, reaching 124.8 mm in on in Thiruvananthapuram over 48 hours. The remnants also brought upwards of 225 mm in on of rainfall in Gujarat.Steve Lang NASA 2004-05-12 2015-05-24 Cyclone Hugs the Coast of India http://earthobservatory.nasa.gov/IOTD/view.php?id=4475 2015-05-24 https://web.archive.org/web/20150524194030/http://earthobservatory.nasa.gov/IOTD/view.php?id=4475 live While an active tropical cyclone, the storm dropped torrential rainfall to the Lakshadweep group offshore western India. Aminidivi recorded 1840 mm in on over three days, including 1170 mm in on in just 24 hours. This broke the record for the highest daily rainfall total related to a North Indian Ocean cyclone.August 2009 Alarming Rise in the Number and Intensity of Extreme Point Rainfall Events over the Indian Region under Climate Change Scenario R.M. Khaladkar P.N. Mahajan J.R. Kulkarni Indian Institute of Tropical Meteorology 2015-05-24 0252-1075 http://www.tropmet.res.in/~lip/Publication/RR-pdf/RR-123.pdf 2021-11-09 https://web.archive.org/web/20211109221210/https://www.tropmet.res.in/~lip/Publication/RR-pdf/RR-123.pdf live The high rains cut communications from the island group to the mainland, and damaged 45 houses in conjunction with the winds. High waves sank 15 boats and one cargo ship while also causing erosion in Kerala. The storm killed nine people and caused ₹300 million rupees (6.7 million USD). Extremely Severe Cyclonic Storm BOB 01 NIO 02B 2004-05-19 0405Z.jpg Cyclone 02B 2004 track.png May 16 May 19 65 90 952 2004 Myanmar cyclone The second storm of the season formed as a depression on May 16 in the central Bay of Bengal. With low wind shear and a surge in the monsoon trough, the storm intensified while meandering over open waters. The storm eventually began a steady northeastward motion due to a ridge to the north over India. While approaching land, an eye developed in the center of the storm, indicative of a strong cyclone. On May 19, the cyclone made landfall along northwestern Myanmar near Sittwe, with maximum sustained winds estimated at 165 km/h mph on 5 by the IMD. The storm rapidly weakened over land, although its remnants spread rainfall into northern Thailand and Yunnan province in China. Winds from the cyclone reached 157 km/h (98 mph) in Myanmar, occurring in conjunction with heavy rainfall and a high storm surge.United Nations Office for the Coordination of Humanitarian Affairs 2004-05-27 Myanmar: Storm OCHA Situation Report No. 1 ReliefWeb 2015-05-25 http://reliefweb.int/report/myanmar/myanmar-storm-ocha-situation-report-no-1 2015-05-26 https://web.archive.org/web/20150526051141/http://reliefweb.int/report/myanmar/myanmar-storm-ocha-situation-report-no-1 live Despite the storm's ferocity, the government did not report about the cyclone for ten days, as they usually under report on landfalling storms.Agence France-Presse 2004-05-29 Myanmar breaks silence over deadly cyclone, says many dead and missing UNICEF 2015-05-25 http://www.unicef.org/myanmar/in_news_1659.html 2016-03-04 https://web.archive.org/web/20160304092606/http://www.unicef.org/myanmar/in_news_1659.html dead The cyclone caused heavy damage throughout Rakhine State, destroying or heavily damaging 4,035 homes and leaving 25,000 people homeless.Associated Press 2004-05-28 Myanmar cyclone toll: at least 140 dead – UN says at least 18,000 homeless from May 19 storm UNICEF 2015-05-25 http://www.unicef.org/myanmar/in_news_1656.html 2016-03-04 https://web.archive.org/web/20160304090213/http://www.unicef.org/myanmar/in_news_1656.html deadInternational Federation of Red Cross And Red Crescent Societies 2005-05-27 Myanmar Appeal No. 01.65/2004 Annual Report ReliefWeb 2015-05-25 http://reliefweb.int/report/myanmar/myanmar-appeal-no-01652004-annual-report 2015-05-26 https://web.archive.org/web/20150526044731/http://reliefweb.int/report/myanmar/myanmar-appeal-no-01652004-annual-report live There was widespread crop damage, resulting in food shortages, and damaged roads disrupted subsequent relief efforts.Government of Japan 2004-05-28 Emergency aid for cyclone disaster in the western part of the Union of Myanmar ReliefWeb 2015-05-25 http://reliefweb.int/report/myanmar/emergency-aid-cyclone-disaster-western-part-union-myanmar 2015-05-26 https://web.archive.org/web/20150526053947/http://reliefweb.int/report/myanmar/emergency-aid-cyclone-disaster-western-part-union-myanmar liveInternational Federation of Red Cross And Red Crescent Societies 2004-06-01 Myanmar: Floods Information Bulletin No. 1/2004 ReliefWeb 2015-05-25 http://reliefweb.int/report/myanmar/myanmar-floods-information-bulletin-no-12004 2015-05-26 https://web.archive.org/web/20150526045355/http://reliefweb.int/report/myanmar/myanmar-floods-information-bulletin-no-12004 live Damage in Myanmar totaled over K621 million kyat (US$99.2 million), making it the worst storm in the country since 1968, and there were 236 deaths.International Federation of Red Cross And Red Crescent Societies 2004-06-08 Myanmar: Cyclone Rakhine Appeal No. 14/2004 Operations Update No. 1 ReliefWeb 2015-05-25 http://reliefweb.int/report/myanmar/myanmar-cyclone-rakhine-appeal-no-142004-operations-update-no-1 2015-05-26 https://web.archive.org/web/20150526052903/http://reliefweb.int/report/myanmar/myanmar-cyclone-rakhine-appeal-no-142004-operations-update-no-1 live Although damage was heaviest in Myanmar, the cyclone's effects also spread into neighboring Bangladesh, where strong winds knocked over trees and capsized two ships. Deep Depression ARB 02 NIO ARB 02 2004-06-12.jpg ARB02 2004 track.png June 10 June 13 992 30 On June 8, a low-pressure area formed in the eastern Arabian Sea. A nearby buoy recorded winds of 45 km/h mph on 5, which organized into a depression on June 10. While remaining nearly stationary, the depression quickly intensified into a deep depression. The system later began a slow westward movement, due to a ridge to the north. On June 11, and again on the following day, the JTWC issued a Tropical Cyclone Formation Alert (TCFA), although the system never strengthened beyond its initial stages.Gary Padgett 2000 2015-05-26 Monthly Tropical Weather Summary for June 2004 http://australiasevereweather.com/cyclones/2004/summ0406.htm 2011-08-24 https://web.archive.org/web/20110824034146/http://www.australiasevereweather.com/cyclones/2004/summ0406.htm live Strong wind shear caused the depression to weaken, and the IMD downgraded it to a remnant low on June 13. Deep Depression BOB 02 NIO BOB022004.jpg BOB02 2004 track.png June 11 June 14 992 30 A surge in the monsoon developed an area of convection over the Andaman Sea in early June, spawning a low-pressure area, which later became a depression on June 11. Moving to the northwest along a ridge, it strengthened into a deep depression the next day. Early on June 13, the system struck Odisha near Puri, and initially maintained its intensity over land. However, it eventually weakened, degenerating into a remnant low over Chhattisgarh on June 14. The depression dropped heavy rainfall in eastern India, particularly Odisha. There, the peak 24-hour precipitation total was 320 mm in on in Madanpur Rampur. There were no reports of damage. Land Depression 01 NIO BOB 03 Sept 13 2004 0730Z.jpg LAND01 2004 track.png September 12 September 15 996 25 For about ten days in September, a monsoon depression persisted around the northern edge of the Bay of Bengal onto adjacent landmasses, initially associated with an upper-level low.Gary Padgett 2004 2015-05-28 Monthly Tropical Weather Summary for September 2004 http://australiasevereweather.com/cyclones/2005/summ0409.htm 2011-09-03 https://web.archive.org/web/20110903120851/http://www.australiasevereweather.com/cyclones/2005/summ0409.htm live On September 10, a low-pressure area developed within the monsoon trough in the extreme northern Bay of Bengal. Moving northwestward, it organized into a depression after it moved ashore, organizing over West Bengal near Kolkata. The system attained peak winds of 45 km/h mph on 5 despite being over land. Located within a col, or weakness between ridges, the depression meandered over eastern India, weakening into a remnant low on September 15. It moved slowly northwestward, reaching Uttar Pradesh by September 22. The depression dropped heavy rainfall in eastern India, including as a tropical cyclone, a precursor, and its remnant. Notable rainfall totals include 340 mm in on in Chepan on September 9, 480 mm in on on September 21 at a station in Uttar Pradesh, and 341 mm in on in Dhaka in neighboring Bangladesh, the heaviest daily total in 50 years.Local Consultative Group – Bangladesh 2004-10-06 Bangladesh: Monsoon Floods 2004 - Post-flood needs assessment summary report ReliefWeb 2015-05-28 http://reliefweb.int/report/bangladesh/bangladesh-monsoon-floods-2004-post-flood-needs-assessment-summary-report 2015-05-29 https://web.archive.org/web/20150529065322/http://reliefweb.int/report/bangladesh/bangladesh-monsoon-floods-2004-post-flood-needs-assessment-summary-report live Flash flooding in the Indian state of Tripura killed four people and isolated about 55,000 people. Three people died in West Bengal, where floodwaters left about 650,000 people homeless in hundreds of villages. Flash flooding in Uttar Pradesh killed 33 people overnight on September 21. In nearby Bangladesh, the depression produced additional flooding after a similar disaster occurred in July, temporarily isolating about 1 million people, and killing 19. Severe Cyclonic Storm Onil NIO Onil Oct 2 2004 0630Z.jpg Onil 2004 track.png September 30 October 3 55 35 990 Cyclone Onil A depression formed out of an area of convection southwest of India on September 30. The next day, it intensified into Cyclonic Storm Onil.The name Onil (Bengali: অনিল, [ˈo.nil]) was contributed by Bangladesh and means "air, wind" in Bengali. becoming the first tropical cyclone on record to be named in the northern Indian Ocean.India Meteorological Department January 2010 2010-06-13 Report on Cyclonic Disturbances Over North Indian Ocean During 2009 http://www.imd.gov.in/section/nhac/dynamic/rsmc.pdf dead https://web.archive.org/web/20101204195912/http://imd.gov.in/section/nhac/dynamic/rsmc.pdf December 4, 2010 Cyclone Onil quickly attained its peak intensity on October 2 with winds of 100 km/h mph on 5 and a barometric pressure of 990 mbar (hPa; 990 mbar inHg on 4 out). However, dry air quickly entered the system, causing it to rapidly weaken to a depression just off the coast of Gujarat, India. Over the following several days, the system took a slow, erratic track towards the south-southeast. After turning northeastward, the system made landfall near Porbandar on October 10 and dissipated shortly thereafter.Gary Padgett Australia Severe Weather 2005-05-17 2010-06-10 Monthly Tropical Weather Summary for October 2004 http://australiasevereweather.com/cyclones/2005/summ0410.htm 2017-12-25 https://web.archive.org/web/20171225203054/http://www.australiasevereweather.com/cyclones/2005/summ0410.htm live Throughout southeastern Pakistan and northwestern India, thousands of residents were evacuated prior to the cyclone's arrival. In these areas, the storm produced moderate to heavy rainfall, peaking at 145 mm in on in Thatta, Sindh, Pakistan. These rains led to flash flooding in several areas. Nine people died in several incidents related to the storm in Karachi.Associated Press 2004-10-03 2010-06-10 A cyclone in southern Pakistan kills nine people http://www.highbeam.com/doc/1P1-100197767.html https://web.archive.org/web/20121104054204/http://www.highbeam.com/doc/1P1-100197767.html HighBeam Research subscription usurped AP Worldstream 2012-11-04 The drainage system of Hyderabad sustained significant damage, leading to several protests and demonstrations by city residents.Pakistani Press International 2004-10-03 Weather Forecast: Rain/Thunderstorm expectedPakistani Press International 2004-10-03 Heavy rainfall lashes out lower Sindh Offshore, 300 fishermen are believed to have gone missing during the storm.Pakistani Press International 2004-10-03 300 Fishermen Missing As Cyclone Calms Down After Dashing Keti Bunder Depression BOB 03/04 NIO BOB 04 Oct 04 2004 0745Z.jpg October 2 October 8 1002 25 A low-pressure area formed in the Bay of Bengal on September 30 and gradually became more organized. It moved northwestward and developed into a depression on October 2. Without intensifying beyond winds of 45 km/h mph on 5, the depression moved ashore Andhra Pradesh near Kalingapatnam on October 4. It rapidly weakened into a remnant low and turned to the northeast. On October 7, the system re-intensified into a depression near Bankura despite being over land, aided by moisture from the Bay of Bengal. After crossing into northern Bangladesh, the system again weakened into a remnant low, which gradually elongated and weakened. For several days in early October, the depression dropped rainfall across southeastern India, which was heaviest after it re-intensified over land. Alipurduar in northeastern West Bengal recorded 310 mm in on in a 24-hour period, and Malda reported 430 mm in on in two days. In northern Andhra Pradesh, flooding from the depression affected 40 villages, wrecking 50 houses. The waters also inundated 50000 acre ha on of rice paddies and damaged 200 irrigation water tanks. In West Bengal, the floods killed 3,000 migratory birds and damaged ₹1.1 billion rupees (US$23.9 million) worth of crops; 51 people also died in the state. In neighboring Odisha, four people were killed, and the floods washed away a bridge and affected several villages. The third large flood event of the year, the depression caused its most severe impact in northeastern India, where 218 people were killed, including 112 in the city of Goalpara alone. There, the floods struck in the middle of the night, catching residents off guard and washing away hundreds of houses along two whole blocks.Action by Churches Together International 2004-10-14 ACT members respond as new floods hit north eastern states of India 2015-05-29 http://reliefweb.int/report/india/act-members-respond-new-floods-hit-north-eastern-states-india 2015-05-30 https://web.archive.org/web/20150530075754/http://reliefweb.int/report/india/act-members-respond-new-floods-hit-north-eastern-states-india live Flash flooding caused landslides in Kamrup, while regional and national roads were damaged or submerged. Over 15,000 people were forced to evacuate their homes to emergency shelters.World Health Organization 2004-10-11 2015-05-29 India: Floods Situation Report 11 Oct 2004 ReliefWeb http://reliefweb.int/report/india/india-floods-situation-report-11-oct-2004 2015-05-30 https://web.archive.org/web/20150530081132/http://reliefweb.int/report/india/india-floods-situation-report-11-oct-2004 live Across the region, 98721 ha acre on of crops were damaged, and 30,000 homes were damaged or destroyed. Rainfall spread into Nepal, where 51.3 mm in on was recorded at the airport in Kathmandu. The precipitation led to a snowstorm in Tibet, reaching 60 mm in on in one location; this marked the highest daily snowfall for the station in October, and caused a loss of crops and livestock. Deep Depression ARB 04 NIO Tropical Cyclone 04A 05 nov 2004 0620Z.jpg Cyclone 04A 2004 track.png November 2 November 7 40 30 1004 An area of convection formed west of Sri Lanka on October 31, organizing around a circulation center. Low wind shear allowed slow development,Gary Padgett 2005-05-17 Australia Severe Weather 2015-05-30 Monthly Tropical Weather Summary for November 2004 http://australiasevereweather.com/cyclones/2005/summ0411.htm 2011-07-26 https://web.archive.org/web/20110726073149/http://www.australiasevereweather.com/cyclones/2005/summ0411.htm live and a low-pressure area developed on November 1 in the southeastern Arabian Sea. The following day, a depression formed off the southwest coast of India. Moving northward, the system's convection continued to organize around the center, and the JTWC classified it as Tropical Cyclone 04A on November 4. The IMD upgraded it to a deep depression on the next day as the storm began moving westward. Despite good outflow, the convection failed to intensify further and was limited to the eastern portion, and the JTWC did not estimate 1 minute winds higher than 75 km/h mph on 5. The IMD only assessed a peak of 55 km/h mph on 5. Drier air from the north caused the thunderstorms to weaken and expose the circulation. The IMD downgraded the system to a remnant low on November 7, and the remnants continued to the west-southwest, passing near Socotra Island. On November 9, the remnant circulation brushed the coast of Somalia after redeveloping some convection, but there was no redevelopment. Severe Cyclonic Storm Agni NIO Agni 2004-11-30 0615Z.jpg Agni 2004 track.png November 29 December 2 65 55 994 List of tropical cyclones near the Equator A tropical disturbance was observed on November 19 about 800 km (500 mi) southeast of Colombo, Sri Lanka in the Bay of Bengal.Amit Kesarkar Sudipta Banerjee J Venkata Ratnam 2006 Genesis of tropical cyclone Agni: Physical Mechanisms University of Pune 2009-01-04 http://www.mmm.ucar.edu/wrf/users/workshops/WS2006/abstracts/PSession03/P3_2_Kesarkar.pdf PDF dead https://web.archive.org/web/20110716111636/http://www.mmm.ucar.edu/wrf/users/workshops/WS2006/abstracts/PSession03/P3_2_Kesarkar.pdf 2011-07-16 The disturbance tracked westward, gradually organizing and prompting the JTWC to issue a Tropical Cyclone Formation Alert (TCFA) on November 22. After passing south of Sri Lanka, it became disorganized and was no longer considered likely to develop into a tropical cyclone.Gary Padgett 2005-05-17 November 2004 Worldwide Tropical Cyclone Summary 2009-01-04 http://www.australiasevereweather.com/cyclones/2005/summ0411.htm 2008-09-28 https://web.archive.org/web/20080928215535/http://www.australiasevereweather.com/cyclones/2005/summ0411.htm live The circulation associated with the system continued westward, reorganizing on November 26 in the Arabian Sea. Despite being located unusually close to the equator, the disturbance maintained convection, or thunderstorms, which was becoming organized around the weak low-level circulation. With low wind shear and diffluence aloft, the JTWC remarked the system had a fair chance of developing.Pitts, Klinzmann, & Funk 2004-11-26 Significant Tropical Weather Advisory for the Indian Ocean 2009-01-04 Joint Typhoon Warning Center dead ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2004/Nov/2004112618-ABIO.PGTW While the system was organizing, the center crossed the equator to reach about 0.5° S, thus becoming an anticyclonic circulation in the southern hemisphere. This was unusual, as the Coriolis effect is nonexistent along the equator—the Coriolis effect refers to planetary vorticity, which provides the spin in a cyclone.International Civil Aviation Organization World Meteorological Organization 2005-10-07 RA I Tropical Cyclone Committee for the South-West Indian Ocean: Seventeenth Session 2009-01-04 http://www.wmo.int/pages/prog/www/tcp/documents/RAITCC-17En.pdf PDF 2012-07-17 https://web.archive.org/web/20120717054942/http://www.wmo.int/pages/prog/www/tcp/documents/RAITCC-17En.pdf live The JTWC later assessed the system as remaining in the northern hemisphere, reaching as far south as 0.7° N, or about 80 km (50 mi) from the equator. After the circulation organized further beneath the convection, the JTWC issued another TCFA at 0300 UTC on November 28.Pitts, Klinzmann, & Funk 2004-11-28 Significant Tropical Weather Advisory for the Indian Ocean 2009-01-04 Joint Typhoon Warning Center dead ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2004/Nov/2004112803-ABIO.PGTW Three hours later, the agency classified the system as Tropical Cyclone 05A about 1300 km (800 mi) southwest of the southern tip of India.Christian 2004-11-28 Tropical Cyclone Position Report 2009-01-05 Joint Typhoon Warning Center dead ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2004/Nov/2004112806-TPIO.PGTW In a post-season analysis, the JTWC estimated the cyclone became a tropical storm six hours earlier.Joint Typhoon Warning Center 2005-12-05 Tropical Cyclone 05A Report 2014-01-02 http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/atcr/2004atcr.pdf 2013-12-06 https://web.archive.org/web/20131206154117/http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/atcr/2004atcr.pdf dead At around the same time, the IMD classified it as a "low-pressure area... likely to become well marked."India Meteorological Department 2004-11-28 Tropical Weather Outlook 2009-01-05 FTP server dead ftp://ftp.met.fsu.edu/pub/weather/tropical/New-Delhi/2004/Nov/2004112807.DEMS Upon being classified, the tropical cyclone was moving northwestward under the influence of a ridge over India. Its outflow to the north and south became better defined, although its proximity to the equator limited its southerly outflow somewhat due to wind shear.Joint Typhoon Warning Center 2004-11-28 Tropical Cyclone 05A Warning NR 001 2009-01-05 FTP server dead ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2004/Nov/2004112809-WTIO.PGTW Early on November 29, the IMD classified the system as a depression,India Meteorological Department 2004-11-29 Tropical Weather Outlook 2009-01-05 FTP server dead ftp://ftp.met.fsu.edu/pub/weather/tropical/New-Delhi/2004/Nov/2004112906.DEMS and throughout the day it rapidly intensified to become a cyclonic storm; a cyclonic storm is a tropical cyclone with at least 65 km/h mph on 5 winds sustained for 3 minutes.India Meteorological Department 2004-11-29 Tropical Weather Outlook (2) 2009-01-05 FTP server dead ftp://ftp.met.fsu.edu/pub/weather/tropical/New-Delhi/2004/Nov/2004112918.DEMS Around that time, the JTWC assessed the cyclone as reaching peak winds of 120 km/h mph on 5, sustained for 1 minute, along with gusts to 150 km/h mph on 5. Late on November 29, the cyclone weakened slightly, only to regain its peak intensity by November 30; at that time, it developed a banding eye, and was located about 1500 km (900 mi) southeast of the coast of Somalia.Ronsse 2004-11-30 Tropical Cyclone Position Report 2009-01-05 Joint Typhoon Warning Center dead ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2004/Nov/2004113006-TPIO.PGTW At 1200 UTC on November 30, the IMD issued its first complete advisory on the cyclone, naming it Severe Cyclonic Storm Agni and estimating peak winds at 100 km/h mph on 5; the agency predicted the storm would continue northwestward and strengthen slightly before weakening.India Meteorological Department 2004-11-30 Tropical Cyclone Agni Warning NR 001 2009-01-05 FTP server dead ftp://ftp.met.fsu.edu/pub/weather/tropical/New-Delhi/2004/Nov/2004113012.DEMS At its peak, the cyclone had a barometric pressure of 985 mbar.Kruk, Knapp, and Levinson 2009 A Technique for Merging Global Tropical Cyclone Best Track Data: Data for the Northern Hemisphere 2009-01-05 ftp://eclipse.ncdc.noaa.gov/pub/ibtracs/v01cor-r01/ibtracs_tape/NorthernHemisphere.ibtracs.v01cor-r01.tape Journal of Atmospheric and Oceanic Technology dead TAPE After reaching peak intensity, an increase in wind shear caused the eye to disappear,Lam 2004-11-30 Tropical Cyclone Position Report 2009-01-05 Joint Typhoon Warning Center dead ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2004/Nov/2004113012-TPIO.PGTW and the convection decreased significantly.Joint Typhoon Warning Center 2004-11-30 Tropical Cyclone 05A Warning NR 007 2009-01-05 FTP server dead ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2004/Nov/2004113021-WTIO.PGTW On December 1, the IMD estimated Agni weakened to cyclonic storm status,India Meteorological Department 2004-12-01 Tropical Weather Outlook 2009-01-05 FTP server dead ftp://ftp.met.fsu.edu/pub/weather/tropical/New-Delhi/2004/Dec/2004120109.DEMS around which time the center became exposed from the convection.Lam 2004-12-01 Tropical Cyclone Position Report 2009-01-05 Joint Typhoon Warning Center dead ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2004/Dec/2004120112-TPIO.PGTW The cyclone continued its steady weakening continued due to the wind shear, the presence of dry air, and cooler water temperatures,Joint Typhoon Warning Center 2004-12-02 Tropical Cyclone 05A (Agni) Warning NR 010 2009-01-05 FTP server dead ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2004/Dec/2004120203-WTIO.PGTW and by December 2, the IMD downgraded Agni to depression status, which was its final warning on the system.India Meteorological Department 2004-12-02 Tropical Weather Outlook 2009-01-05 FTP server dead ftp://ftp.met.fsu.edu/pub/weather/tropical/New-Delhi/2004/Dec/2004120206.DEMS As it approached the coast of Somalia, it turned westward due to the building of a ridge over Saudi Arabia.Joint Typhoon Warning Center 2004-12-02 Tropical Cyclone 05A (Agni) Warning NR 011 2009-01-05 FTP server dead ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2004/Dec/2004120215-WTIO.PGTW Despite unfavorable conditions, thunderstorms briefly reformed over the circulation, which allowed the storm to maintain its intensity.Joint Typhoon Warning Center 2004-12-03 Tropical Cyclone 05A (Agni) Warning NR 013A 2009-01-05 FTP server dead ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2004/Dec/2004120309-WTIO.PGTW By late on December 3, Agni weakened to below tropical storm status, and the JTWC issued its final warning while the storm was about 450 km (275 mi) south-southeast of Cape Guardafui—the easternmost point of the Horn of Africa.Joint Typhoon Warning Center 2004-12-03 Tropical Cyclone 05A (Agni) Warning NR 014A 2009-01-05 FTP server dead ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2004/Dec/2004120321-WTIO.PGTW The circulation became difficult to locate by early on December 4, by which time the system had little remaining convection.Fjeld 2004-12-05 Tropical Cyclone Position Report 2009-01-05 Joint Typhoon Warning Center dead ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2004/Dec/2004120403-TPIO.PGTW It turned southwestward and later to the south, moving ashore on eastern Somalia before dissipating on December 5 near Ceel Huur over water. Season effects |- | Severe Cyclonic Storm ARB 01 (2004)|ARB 01|| 01 May 5–10 || bgcolor=#SCS|4 Severe Cyclonic Storm || bgcolor=#SCS|100 100 km/h mph on 5 || bgcolor=#SCS|984 hPa inHg 4 on on || Kerala, Karnataka, Goa ||$6.7 million || 9 || |- | BOB 01 || 02 May 16 –19 || bgcolor=#ESCS|6 Extremely Severe Cyclonic Storm || bgcolor=#ESCS|0165 165 km/h mph on 5 || bgcolor=#ESCS|952 hPa inHg 4 on on ||Myanmar, East India, Bangladesh || $99.2 million || 0 236 || |- | ARB 02 || 03 June 10 –13|| bgcolor=#DD|2 Deep Depression || bgcolor=#DD|055 55 km/h mph on 5 || bgcolor=#DD|992 hPa inHg 4 on on ||West India || None || 0 Unknown || |- | BOB 02 || 04 June 11 –14|| bgcolor=#DD|2 Deep Depression || bgcolor=#DD|055 55 km/h mph on 5 || bgcolor=#DD|992 hPa inHg 4 on on ||East India || 0 Unknown || 0 Unknown || |- | LAND || 05 September 12 –15|| bgcolor=#LD|1 Depression || bgcolor=#LD|45 km/h mph 5 on on || bgcolor=#LD|996 hPa inHg 4 on on || East India || Unknown || 59|| |- | Onil || 06 September 30 –October 3|| bgcolor=#SCS|4 Severe Cyclonic Storm || bgcolor=#SCS|100 100 km/h mph on 5 || bgcolor=#SCS|990 hPa inHg 4 on on || West India, Pakistan || Unknown ||9 || |- | BOB 03/04 || 07 October 2 –8|| bgcolor=#D|1 Depression || bgcolor=#D|45 km/h mph 5 on on || bgcolor=#D|1002 hPa inHg 4 on on off|| East India || $23.9 million || 273 || |- | ARB 04 || 08 November 2 –7|| bgcolor=#DD|2 Deep Depression || bgcolor=#DD|55 km/h mph 5 on on || bgcolor=#DD|1004 hPa inHg 4 on off on || Somalia || Unknown || None || |- | Agni || 09 November 29 –December 2 || bgcolor=#SCS|4 Severe Cyclonic Storm || bgcolor=#SCS| 100 100 km/h mph on 5 || bgcolor=#SCS| 994 hPa inHg 4 on on || Somalia, Maldives || Unknown || Unknown || |- 9 systems May 5 –December 2  165 km/h mph on 5 952 hPa inHg 4 on $129.8 million 587 See also Tropical cyclones North Indian Ocean tropical cyclone Tropical cyclones in 2004 List of wettest tropical cyclones List of wettest known tropical cyclones in Pakistan 2004 Atlantic hurricane season 2004 Pacific hurricane season 2004 Pacific typhoon season South-West Indian Ocean cyclone seasons: 2003–04, 2004–05 Australian region cyclone seasons: 2003–04, 2004–05 South Pacific cyclone seasons: 2003–04, 2004–05 Notes References 2 External links Gary Padgett Tropical Cyclone Summary Gary Padgett Tropical Cyclone Summary Part 2 Tropical Cyclone Operational Plan for the Bay of Bengal and the Arabian Sea Impact of Cyclonic Storms and Suggested Mitigation Actions (by India Meteorological Department) WMO/ESCAP Panel on Tropical Cyclones Final Report 2000 North Indian Ocean cyclone 2004 2004 NIO