Cyclone Komen

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Map key
Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
Disc Plain black.svg Tropical cyclone
Solid black.svg Subtropical cyclone
ArrowUp.svg Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

The monsoon spawned a low-pressure area on July 25 over the extreme northern Bay of Bengal and along the southern coast of Bangladesh. With low wind shear and abundant convection south of a developing circulation, the system quickly organized. At 03:00  UTC on July 26, the India Meteorological Department (IMD) classified the system as a depression, while the circulation was nearly stationary near the southern coast of Bangladesh. Land interaction and an unfavorable phase of the Madden–Julian oscillation prevented further strengthening, despite warm water temperatures of 31 °C (88 °F). [1] Early on July 27, the American-based Joint Typhoon Warning Center (JTWC) began monitoring the depression after the convection organized further, amplified by good outflow. [2] Still embedded within the monsoon, the depression remained nearly stationary for two days over southern Bangladesh. [1] The JTWC issued a Tropical Cyclone Formation Alert late on July 28, due to the increasingly defined circulation. [3]

On July 28, the system began moving more to the south and southeast, although its movement was very slow, possibly affected by another monsoon depression over western India. The IMD described the track as "unique", taking a "semi-circular path over the northeast Bay of Bengal." At 00:00 UTC on the next day, the IMD upgraded the depression to a deep depression, [1] and three hours later the JTWC classified the system as Tropical Cyclone 02B, located 135 km (84 mi) southwest of Chittagong, Bangladesh. A tropical upper tropospheric trough to the northeast imparted dry air, but otherwise, conditions were generally favorable. [4] A ridge over Myanmar turned the system to the north on July 29. [1] During that day, the circulation was somewhat elongated and exposed from the convection, while the thunderstorms in the southern periphery organized into spiral rainbands. [5] At 18:00 UTC on July 29, the IMD upgraded the system to Cyclonic Storm Komen, one of only four storms of such intensity in July since 1965; typically, low-pressure areas that form in the month are in the extreme northern periphery of the Bay of Bengal, allowing little time to develop over waters, and usually impeded by wind shear. [1]

Late on July 29, the JTWC estimated that Komen attained peak 1 minute sustained winds of 75 km/h (45 mph), based on estimates from satellite imagery. [6] As the storm approached Bangladesh, the circulation remained very broad with most of the convection in the southern periphery, [7] although radar imagery from the coast indicated there was a formative eye feature in the storm's center. At 06:00 UTC on July 30, the IMD estimated peak 3 minute winds of 75 km/h (45 mph). Between 14:00–15:00 UTC that day, Komen made landfall on Bangladesh just west of Chittagong, [1] and the JTWC discontinued advisories once the storm was ashore. [8] Komen quickly weakened as it turned to the northwest through Bangladesh, steered by a ridge over Tibet to the north. On July 31, the system crossed into the Indian state of West Bengal as a weakened depression. The track shifted to the west-southwest until Komen weakened into a remnant low on August 2 over Jharkhand. [1]

Preparations

Komen over land on August 2 Komen Aug 2 2015.jpg
Komen over land on August 2

During the duration of Komen's existence, the IMD issued warnings on the storm that were relayed to the governments of the countries affected. In southeastern India, government officials issued various warnings for fishermen and for the potential of disruptive rainfall. [1] The widespread flooding forced 1.2 million people to evacuate their homes, [9] with 1,537 shelters opened to house 214,306 of the evacuees. [10] West Bengal Chief Minister Mamata Banerjee canceled an overseas trip to London to coordinate relief activities related to the storm. [11]

The Bangladeshi government evacuated 331,120 people to 766 storm shelters, mostly in low-lying areas of Cox's Bazar District. [12]

Impact

For several days, Komen dropped heavy rainfall across the northern Bay of Bengal and onto the adjacent coastlines of northwestern Myanmar, Bangladesh, and eastern India. The southeast quadrant produced the heavy rainfall, resulting in a peak rainfall of 840 mm (33 in) in Paletwa, Myanmar; [1] the country experienced record rainfall totals during July and August 2015 in some locations. [13]

Bangladesh

Moving ashore Bangladesh, Komen was accompanied by a storm surge of 1 to 2 m (3.3 to 6.6 ft) that affected Chittagong, [1] while flooding rains caused landslides.gladesh, a station at Teknaf Upazila briefly recorded winds of 100 km/h (60 mph) on July 30. [1] Chittagong in southeastern Bangladesh recorded over 800 mm (31 in) of rainfall over three days, and over 1,000 mm (39 in) in Cox's Bazar over ten days. [14] [15] Rough seas killed two people off Cox's Bazar when a boat capsized. Rain-induced landslides killed five people in Cox's Bazar, and two others died in the town due to flooding. [14] The storm damaged 88,900 houses across Bangladesh, [1] including hundreds of fishermen huts. Trees knocked onto houses killed at least three people in separate instances. [16] Flooding submerged at least 145,000 ha (360,000 acres) of crops for at least a week after Komen struck the country. [17] Komen killed 45 people in Bangladesh [18] – 21 in Cox's Bazar and 7 in Bandarban District [14] – some of whom due to illnesses spread by the storm. [15] About 220,000 residencies required some form of assistance after the storm, primarily to cover lack of food. [19] Damage in Chittagong exceeds ৳1.41 billion (US$18.1 million). [20]

India

India, rainfall peaked at 520 mm (20 in) in Harinkhola, West Bengal, after the storm moved inland and tracked westward. [1] Komen's rainfall in India compounded upon previous floods; heavy rainfall from the storm occurred while rivers and dams were overflowing. [21] Rainfall produced a landslide in Manipur state in extreme eastern India, killing 20 people. [14] As the storm moved into West Bengal, it killed 10,088 livestock while affecting millions of residents. Komen damaged 368,238 houses and destroyed another 107,808. Across the state, the storm killed 83 people, [1] some related to lightning and snakebites. [14] Flooding covered a portion of National Highway 60 in neighboring Odisha state. [1] The Indian government utilized 121 rescue boats to assist stranded residents. [22] Overall damage in West Bengal were up to ₹30 billion (US$467 million). [23]

Myanmar

Myanmar Landslide 2015 (before).jpg
Myanmar Landslide 2015 (after).jpg
Before and after image of a landslide in Chin State

Across northwestern Myanmar, Komen brought additional rainfall after weeks of monsoonal flooding. [24] In extreme northwestern Myanmar, Maungdaw recorded winds of 124 km/h (77 mph), possibly during a passing squall. Nearby Sittwe recorded winds of 107 km/h (66 mph). Torrential rainfall, reaching 150 mm (5.9 in) per hour, caused flooding and landslides. In Chin State northeast of Tonzang, Komen resulted in three landslides, including one along a mountain slope that moved 395 million tons of ground at a speed of up to 180 km/h (110 mph); the landslide was 5.9 km (3.7 mi) in length, one of the largest worldwide in a decade that was unrelated to an earthquake, and a much faster moving landslide than normal. [25] The flooding after Komen's passage were considered the worst disaster in Myanmar since Cyclone Nargis in 2008, [26] and according to the government, possibly the worst flooding in a century. [27] About 1.7 million people had to temporarily evacuate. [28]

Water levels reached the top of buildings, [29] which displaced residents and restricted travel to just by boat and helicopter. [29] [30] Floods from Komen caused further damage to houses and roads. [31] The floods covered crop fields with mud and silt, particularly in valleys. [32] By the end of July 2015, over 1,400,000 acres (570,000 ha) of farmlands were inundated, [33] of which 667,221 acres (270,015 hectares) of planted crops were damaged, mainly to the rice paddy. [34] About 236,000 chickens were killed, and there were lower losses to other livestock. [13] In Sittwe, flooding and winds damaged six shelters and camps, where about 100,000 people were residing during the storm. [35] [36] The shelters sustained damage to latrines and learning centers, necessitating the use of tarps to ride out the floods. [37] The town of Kalay was isolated by floods and only reachable by air travel. [35]

Flooding from Komen was worst in Rakhine State, [38] where water distribution was contaminated, [39] and entire towns were largely destroyed. [40] Waters started to recede by August 4, [38] allowing residents to return home; [41] by September 2015, most of the displaced residents nationwide had returned home. [28] High winds in Lailenpi within Chin State damaged a school and a training center for community health workers. [42] Four schools were damaged nationwide by Komen alone. [1] The storm and the preceding floods damaged 490,000 houses and destroyed another 21,000, [43] causing 132 deaths, [44] at least 55 of whom in Rakhine State. [45] Komen was directly responsible for at least 39 deaths in the country. [46] Total estimated loss of the flooding were at K1.942 trillion (US$1.51 billion). [47]

Aftermath

On July 31, President of Myanmar Thein Sein declared disaster areas for Chin and Rakhine states and for Sagaing and Magway regions. [35] On August 4, the government issued an appeal to the international community for assistance. [48] In response, the government of Australia provided A$3 million, [49] and the United States Agency for International Development sent US$600,000. [50] Neighboring Bangladesh donated $800,000 worth of medicine, water kits, and other supplies. Assistance from other countries included $775,000 from the United Kingdom, $142,202 from nearby Thailand, $100,000 from the Singapore Red Cross, and $300,000 from China. [15]

After Myanmar's government failed to respond to the devastating effects of Cyclone Nargis in 2008, officials responded more quickly to the floods and the effects from Komen. [29] Relief supplies were airdropped to marooned villages, assisting the Rohingya people in Rakhine. [38] The government allocated US$1.2 million toward supplying farmers with rice paddy seeds to regrow damaged crops. [51] About half of the damaged crop was replanted by November 2015, [28] and in most areas, the grounds remained fertile for future growing. [13] Local businesses donated K2.06 billion toward buying supplies, [52] and businessman Aung Ko Win donated US$3.6 million. [53] The Myanmar Red Cross, which was already responding to the ongoing flooding, provided additional supplies and assisted with evacuations. [41] The International Federation of Red Cross and Red Crescent Societies assisted in these efforts by providing rice and blankets. [37] Volunteers distributed sleeping mats, mosquito nets, medical supplies, and tarps. [54] Various United Nations agencies assisted the residents in displaced camps that were affected further by Komen. [30] Within a month of the storm, the World Food Programme had provided meals to over 450,000 people. [55] Food and oil prices rose in the weeks after the floods, [56] and the price of rice reached record levels in the country in August and September 2015. The cost gradually declined after the next rice harvest. [13] To help unemployed farm workers, the Bill & Melinda Gates Foundation financed a program to pay storm victims to rebuild damaged embankments and restore clean water access. [57] An assessment by the United Nations, the World Bank, and the Myanmar government found that women and children were the worst affected group during and after the disaster, due to the stresses of the damaged houses, and insufficient food and assistance in the subsequent months. [58]

See also

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References

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  21. ↑ "At least 180 dead, a million displaced in India floods". ReliefWeb. Agence France-Presse. August 4, 2015. Archived from the original on April 5, 2016. Retrieved February 29, 2016.
  22. ↑ Tim Marcin (August 2, 2015). "Floods In India Leave At Least 81 Dead Following Cyclone Komen: Report". International Business Times. Archived from the original on April 4, 2016. Retrieved March 23, 2016.
  23. ↑ "Joint Needs Assessment Report: West Bengal Floods 2015" (PDF). Sphere India. August 30, 2015. Archived (PDF) from the original on May 8, 2019. Retrieved March 23, 2016.
  24. ↑ Cyclone Komen weakens, heavy rainfall continues across Myanmar. New Light of Myanmar (Report). ReliefWeb. July 31, 2015. Archived from the original on December 18, 2015. Retrieved February 29, 2016.
  25. ↑ Adam Voiland (November 8, 2015). "Satellite Spots Massive Tonzang Landslide". NASA Earth Observatory. Archived from the original on May 31, 2016. Retrieved March 22, 2016.
  26. ↑ Myanmar floods: Families lose everything. CARE (Report). ReliefWeb. August 17, 2015. Archived from the original on June 3, 2016. Retrieved March 15, 2016.
  27. ↑ Caritas provides aid to victims of worst floods in Myanmar. Caritas (Report). ReliefWeb. September 28, 2015. Archived from the original on January 7, 2016. Retrieved March 15, 2016.
  28. 1 2 3 Revised Flood Response Plan For Myanmar (August to December 2015) (Report). ReliefWeb. United Nations Office for the Coordination of Humanitarian Affairs. November 4, 2015. Archived from the original on June 3, 2016. Retrieved March 22, 2016.
  29. 1 2 3 "Hundreds dead, millions displaced as monsoon rains heap misery on Asia". ReliefWeb. Agence France-Presse. August 3, 2015. Archived from the original on April 23, 2016. Retrieved February 29, 2016.
  30. 1 2 UNHCR assists flood victims in Myanmar's Rakhine and Kachin states. United Nations High Commission for Refugees (Report). ReliefWeb. August 4, 2015. Archived from the original on April 25, 2016. Retrieved March 14, 2016.
  31. ↑ Humanitarian Implementation Plan (HIP) South East Asia and the Pacific (ECHO/-XA/BUD/2015/91000) Last update: 06/08/2015 Version: 2. European Commission Humanitarian Aid Office (Report). ReliefWeb. August 7, 2015. Archived from the original on June 3, 2016. Retrieved March 15, 2016.
  32. ↑ Emergency appeal operations update Myanmar: Floods (PDF) (Report). ReliefWeb. International Red Cross and Red Crescent Movement. August 29, 2015. Archived (PDF) from the original on June 3, 2016. Retrieved March 21, 2016.
  33. ↑ Myanmar floods deal major blow to country's agriculture. Food and Agriculture Organization (Report). ReliefWeb. September 3, 2015. Archived from the original on June 3, 2016. Retrieved March 21, 2016.
  34. ↑ Asia Pacific Food Price and Policy Monitor, August 2015 - Issue 24. Food and Agriculture Organization (Report). ReliefWeb. August 31, 2015. Archived from the original on June 3, 2016. Retrieved March 21, 2016.
  35. 1 2 3 OCHA Flash Update No 1: Myanmar Floods Emergency, 01 August 2015. United Nations Office for the Coordination of Humanitarian Affairs (Report). ReliefWeb. August 1, 2015. Archived from the original on March 15, 2016. Retrieved February 29, 2016.
  36. ↑ UNHCR assists flood victims in Myanmar's Rakhine and Kachin states. United Nations High Commissioner for Refugees (Report). ReliefWeb. August 4, 2015. Archived from the original on April 25, 2016. Retrieved February 29, 2016.
  37. 1 2 Myanmar floods: ICRC joins relief efforts in Rakhine. International Committee of the Red Cross (Report). ReliefWeb. August 5, 2015. Archived from the original on April 25, 2016. Retrieved March 14, 2016.
  38. 1 2 3 Flood-hit Burma appeals for international aid. Democratic Voice of Burma (Report). ReliefWeb. August 4, 2015. Archived from the original on June 3, 2016. Retrieved February 29, 2016.
  39. ↑ Kelly MacNamara (August 6, 2015). "Myanmar villagers fight floods with just sand bags and hope". ReliefWeb. Agence France-Presse. Archived from the original on June 3, 2016. Retrieved March 14, 2016.
  40. ↑ IHH sends emergency aid to flood stricken Arakan (Report). ReliefWeb. Internationale Humanitäre Hilfsorganisation e.V. August 10, 2015. Archived from the original on June 3, 2016. Retrieved March 21, 2016.
  41. 1 2 Red Cross responds to Myanmar flood emergency (Report). ReliefWeb. Australian Red Cross. August 4, 2015. Archived from the original on June 3, 2016. Retrieved March 14, 2016.
  42. ↑ Flooding Crisis in Burma (Myanmar): An urgent appeal from Dr Sasa. HART (Report). ReliefWeb. August 6, 2015. Archived from the original on June 3, 2016. Retrieved March 15, 2016.
  43. ↑ Myanmar/Burma - Floods - ECHO Daily Map 11/9/2015 (Report). ReliefWeb. European Commission Humanitarian Aid Office. September 11, 2015. Archived from the original on June 3, 2016. Retrieved March 21, 2016.
  44. ↑ Update on Myanmar Flood Response - 15 November 2015 (Report). ReliefWeb. International Committee of the Red Cross. November 15, 2015. Archived from the original on March 24, 2016. Retrieved March 22, 2016.
  45. ↑ At Least 55 Dead From Floods in Western Myanmar (Report). ReliefWeb. Radio Free Asia. August 6, 2015. Archived from the original on June 3, 2016. Retrieved March 15, 2016.
  46. ↑ Disasters in Asia and the Pacific: 2015 Year in Review (PDF) (Report). ReliefWeb. United Nations Economic and Social Commission for Asia and the Pacific. March 10, 2016. Archived (PDF) from the original on April 8, 2016. Retrieved March 22, 2016.
  47. ↑ Myanmar: Post-disaster needs assessment of floods and landslides July - September 2015 (PDF) (Report). World Bank. Government of the Union of Myanmar. November 2015. Retrieved March 15, 2016.
  48. ↑ Flood-hit Burma appeals for international aid. Democratic Voice of Burma (Report). ReliefWeb. August 4, 2015. Archived from the original on June 3, 2016. Retrieved March 14, 2016.
  49. ↑ Additional humanitarian assistance to Myanmar. Government of Australia (Report). ReliefWeb. August 7, 2015. Archived from the original on June 3, 2016. Retrieved March 15, 2016.
  50. ↑ USAID announces humanitarian assistance for flood-affected people in Burma. United States Agency for International Development (Report). ReliefWeb. August 6, 2015. Archived from the original on June 3, 2016. Retrieved March 15, 2016.
  51. ↑ "Farm debt rises as Myanmar floodwaters recede". ReliefWeb. IRIN. August 19, 2015. Archived from the original on April 25, 2016. Retrieved March 21, 2016.
  52. ↑ President pledges livelihood assistance for Rakhine flood victims. New Light of Myanmar (Report). ReliefWeb. August 6, 2015. Archived from the original on April 25, 2016. Retrieved March 15, 2016.
  53. ↑ Aung Ko Win's KBZ Charity Tops $3.6m in Flood Aid. Irrawaddy (Report). ReliefWeb. August 9, 2015. Archived from the original on April 25, 2016. Retrieved March 15, 2016.
  54. ↑ Myanmar: Recovery work begins to support flood-affected communities. International Committee of the Red Cross (Report). ReliefWeb. September 7, 2015. Archived from the original on October 8, 2020. Retrieved March 14, 2016.
  55. ↑ What's Happening in Myanmar One Month Onward. World Food Programme (Report). ReliefWeb. September 15, 2015. Archived from the original on April 25, 2016. Retrieved March 21, 2016.
  56. ↑ Prices of commodities shoot up in Maungdaw. Kaladan Press Network (Report). ReliefWeb. August 12, 2015. Archived from the original on April 25, 2016. Retrieved March 15, 2016.
  57. ↑ LIFT, and the Bill and Melinda Gates Foundation alleviate livelihood loss in Rakhine State. International Rescue Committee (Report). ReliefWeb. October 13, 2015. Archived from the original on April 25, 2016. Retrieved March 21, 2016.
  58. ↑ Post-disaster assessment in Myanmar highlights disproportionate impact on women. UN Women (Report). ReliefWeb. December 17, 2015. Archived from the original on April 25, 2016. Retrieved March 22, 2016.
Cyclonic Storm Komen
Komen 2015-07-30 0658Z.jpg
Komen approaching the Bangladeshi coast on July 30
Tropical cyclones of the 2015 North Indian Ocean cyclone season
2015 North Indian Ocean cyclone season summary.png
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