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- The 2015 North Indian Ocean cyclone season was a below-average tropical cyclone season which featured the highest number of deaths since the 2010 season. Despite inactivity in the Bay of Bengal caused by the ongoing El Niño, the season produced an above-average number of tropical cyclones in the Arabian Sea. The first storm of the season, Ashobaa, formed on 7 June, while the final storm of the season, Megh, ultimately dissipated on 10 November. A total of twelve depressions were recorded, of which nine intensified into deep depressions. Of these nine, a total of four further strengthened into cyclonic storms, while two attained their peaks as extremely severe cyclonic storms. In early June, Cyclonic Storm Ashobaa produced significant flooding in eastern Oman and the United Arab Emirates. Later that month, Deep Depression ARB 02 resulted in the worst floods in the Amreli district of Gujarat in 90 years. The storm resulted in 80 deaths and an estimated 16.5 billion Indian rupees in damage in the state. In late July and early August, Cyclonic Storm Komen resulted in between 187 and 280 deaths in northeastern India, Bangladesh and Myanmar due to torrential rains as it slowly moved through the region. In early November, Extremely Severe Cyclonic Storm Chapala, the strongest storm of the season, became the first recorded tropical cyclone to produce hurricane-force winds in Yemen. During the storm's passage, areas in southern Yemen received 610 mm (24 in) of rainfall over 48 hours, or 700% of the average yearly precipitation. Just days after Chapala produced widespread damage in Yemen and the Puntland region of Somalia, Extremely Severe Cyclonic Storm Megh passed through the same region causing further destruction. Megh was judged to have been the worst tropical cyclone ever to affect the Yemeni island of Socotra, and resulted in 18 deaths on the island. The final storm of the season to form, Deep Depression BOB 03, produced significant flooding in southern India and resulted in at least 71 deaths in the region in early November. Within the northern Indian Ocean, tropical cyclones were monitored by the India Meteorological Department (IMD) at the Regional Specialized Meteorological Center in New Delhi. The IMD designated tropical cyclones forming in the Arabian Sea with the prefix "ARB", tropical cyclones forming in the Bay of Bengal with the prefix "BOB" and tropical cyclones forming overland with the prefix "LAND". In addition, the United States Joint Typhoon Warning Center (JTWC) issued unofficial warnings within the region, with tropical cyclones forming in the Arabian Sea assigned the suffix "A" and tropical cyclones forming in the Bay of Bengal assigned the "B" suffix. The IMD used the IMD Tropical Cyclone Intensity Scale and measured average sustained wind speeds taken over a three-minute period, while the JTWC measured average sustained wind speeds taken over a one-minute period and used the Saffir–Simpson hurricane scale. This timeline includes information from post-storm reviews by the IMD and the JTWC. It documents tropical cyclone formations, strengthenings, weakenings, landfalls, extratropical transition, and dissipations during the season. Reports among warning centers often differ; therefore, information from both agencies has been included. (en)
- 2015年北印度洋氣旋季活跃度低于平均水平，但造成的丧生人数创下2010年气旋季后新高。厄尔尼诺现象限制孟加拉灣的热带天气活动，但阿拉伯海本季形成的熱帶氣旋数超过均值。6月7日成型的阿索巴是本季首场风暴，11月10日消散，为气旋季划上句点。 全季共形成12个低气压，其中九个强化成强低气压，四个达到气旋风暴标准，两个最高达超级气旋风暴强度。气旋风暴阿索巴六月上旬在阿曼东部和阿拉伯联合酋长国引发重大洪灾；下旬第ARB02号强低气压又在古吉拉特邦安雷利县触发90年来最严重的洪灾，造成80人死亡，估计经济损失165亿印度盧比。七月末至八月初，缓慢行经印度东北部、孟加拉国、缅甸并降下瓢泼大雨，导致187至280人遇难。11月上旬，本季最强风暴极强气旋风暴查帕拉成为有纪录以来第一个在也门产生飓风强度狂风的热带气旋。也门南部多地48小时降下610毫米雨量，相当于七倍年均雨量。查帕拉在也门、索马里邦特兰造成大面积破坏仅数天后，极强气旋风暴梅格更令当地雪上加霜，是也门索科特拉岛史上破坏最大的热带气旋，夺走岛上18条人命。是本季最后的风暴，11月上旬在印度南部引发严重洪灾，造成至少71人丧生。 位于新德里的印度气象局负责监控北印度洋热带气旋，是该洋面區域專責氣象中心。该机构为阿拉伯海形成的热带气旋编号时添加前缀“ARB”，孟加拉湾成型的热带气旋编号增加“BOB”，陆地上空形成的热带气旋增加“LAND”。美国聯合颱風警報中心不是区域专责气象中心，但也会针对北印度洋热带气旋发布公告，为阿拉伯海热带气旋编号时采用后缀“A”，孟加拉湾采用“B”。印度气象局热带气旋等级采用三分钟最大持续风速，联合台风警报中心采用一分钟持续风速并以萨菲尔-辛普森飓风风力等级衡量风暴强度。 2015年北印度洋气旋季时间轴记载全季所有热带或亚热带气旋形成、增强、减弱、登陆，转变成溫帶氣旋及消散的具体信息，还包括气旋季期间没有发布的信息，如飓风季过后重新分析并回顾各风暴时的更新，包括最大持续风速、位置、距离在内的所有数字均四舍五入成整数。同时为方便起见，以下所有时间如无特别说明均指协调世界时。 (zh)
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| rdfs:comment
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- The 2015 North Indian Ocean cyclone season was a below-average tropical cyclone season which featured the highest number of deaths since the 2010 season. Despite inactivity in the Bay of Bengal caused by the ongoing El Niño, the season produced an above-average number of tropical cyclones in the Arabian Sea. The first storm of the season, Ashobaa, formed on 7 June, while the final storm of the season, Megh, ultimately dissipated on 10 November. (en)
- 2015年北印度洋氣旋季活跃度低于平均水平，但造成的丧生人数创下2010年气旋季后新高。厄尔尼诺现象限制孟加拉灣的热带天气活动，但阿拉伯海本季形成的熱帶氣旋数超过均值。6月7日成型的阿索巴是本季首场风暴，11月10日消散，为气旋季划上句点。 全季共形成12个低气压，其中九个强化成强低气压，四个达到气旋风暴标准，两个最高达超级气旋风暴强度。气旋风暴阿索巴六月上旬在阿曼东部和阿拉伯联合酋长国引发重大洪灾；下旬第ARB02号强低气压又在古吉拉特邦安雷利县触发90年来最严重的洪灾，造成80人死亡，估计经济损失165亿印度盧比。七月末至八月初，缓慢行经印度东北部、孟加拉国、缅甸并降下瓢泼大雨，导致187至280人遇难。11月上旬，本季最强风暴极强气旋风暴查帕拉成为有纪录以来第一个在也门产生飓风强度狂风的热带气旋。也门南部多地48小时降下610毫米雨量，相当于七倍年均雨量。查帕拉在也门、索马里邦特兰造成大面积破坏仅数天后，极强气旋风暴梅格更令当地雪上加霜，是也门索科特拉岛史上破坏最大的热带气旋，夺走岛上18条人命。是本季最后的风暴，11月上旬在印度南部引发严重洪灾，造成至少71人丧生。 (zh)
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