Timeline of the 2015 North Indian Ocean cyclone season

Last updated

Timeline of the
2015 North Indian Ocean cyclone season
2015 North Indian Ocean cyclone season summary.png
Season summary map
Season boundaries
First system formedJune 7, 2015
Last system dissipatedNovember 10, 2015
Strongest system
Name Chapala
Maximum winds215 km/h (130 mph)
(3-minute sustained)
Lowest pressure940 hPa (mbar)
Longest lasting system
Name Chapala
Duration8 days
Storm articles
Other years
2013, 2014, 2015, 2016, 2017

The 2015 North Indian Ocean cyclone season was a below-average tropical cyclone season [nb 1] 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. [1] The first storm of the season, Ashobaa, formed on 7 June, while the final storm of the season, Megh, ultimately dissipated on 10 November.

Contents

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. [2] [3] [4] Later that month, Deep Depression ARB 02 resulted in the worst floods in the Amreli district of Gujarat in 90 years. [5] The storm resulted in 80 deaths and an estimated 16.5 billion Indian rupees in damage in the state. [6] [7] 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. [8] 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. [9] 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. [10] [11]

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.

Timeline of events

2015 South Indian floodsCyclone MeghCyclone ChapalaJuly 2015 Gujarat floodCyclone Komen2015 Gujarat cycloneTimeline of the 2015 North Indian Ocean cyclone season

June

Cyclonic Storm Ashobaa (01A) over the Arabian Sea on 9 June Ashobaa 2015-06-09 0650Z.jpg
Cyclonic Storm Ashobaa (01A) over the Arabian Sea on 9 June

6 June

7 June

8 June

9 June

11 June

Depression BOB 01 while making landfall on the Odia coast late on 20 June BOB 01 2015 20 June.jpeg
Depression BOB 01 while making landfall on the Odia coast late on 20 June

12 June

20 June

22 June

Deep Depression ARB 02 shortly before making landfall near Diu on 23 June ARB 02 23 June 2015.jpg
Deep Depression ARB 02 shortly before making landfall near Diu on 23 June

23 June

24 June

25 June

July

10 July

12 July

26 July

27 July

Depression LAND 02 over Rajasthan on 28 July LAND 02 2015-07-28 0550Z.jpg
Depression LAND 02 over Rajasthan on 28 July

28 July

29 July

30 July

31 July

August

Storm path of Cyclonic Storm Komen (02B) during late July and early August Komen 2015 track.png
Storm path of Cyclonic Storm Komen (02B) during late July and early August

2 August

4 August

5 August

September

16 September

17 September

18 September

19 September

October

7 October

Depression ARB 03 (03A) over the Arabian Sea on 9 October ARB 03 2015-10-09 0850Z.jpg
Depression ARB 03 (03A) over the Arabian Sea on 9 October

9 October

11 October

12 October

27 October

28 October

Storm path of Extremely Severe Cyclonic Storm Chapala (04A) during late October and early November Chapala 2015 track.png
Storm path of Extremely Severe Cyclonic Storm Chapala (04A) during late October and early November

29 October

30 October

31 October

November

Extremely Severe Cyclonic Storm Chapala (04A) approaching Yemen on 2 November Chapala 2015-11-02 0940Z (Worldview).jpg
Extremely Severe Cyclonic Storm Chapala (04A) approaching Yemen on 2 November

1 November

2 November

3 November

4 November

Storm path of Extremely Severe Cyclonic Storm Megh (05A) during early November Megh 2015 track.png
Storm path of Extremely Severe Cyclonic Storm Megh (05A) during early November

5 November

7 November

Extremely Severe Cyclonic Storm Megh (05A) at peak intensity just north of Socotra on 8 November Megh 2015-11-08 1025Z (alternate).jpg
Extremely Severe Cyclonic Storm Megh (05A) at peak intensity just north of Socotra on 8 November

8 November

9 November

Deep Depression BOB 03 off the southern Indian coast on 9 November BOB 03 2015-11-09 0810Z.jpg
Deep Depression BOB 03 off the southern Indian coast on 9 November

10 November

See also

Footnotes

  1. According to the India Meteorological Department, an average of five tropical cyclones of at least cyclonic storm intensity form in the North Indian Ocean annually; the 2015 season featured only four such storms. [1]
  2. UTC stands for Coordinated Universal Time.
  3. IST stands for Indian Standard Time, which is equivalent to UTC+5:30.
  4. The figures for maximum sustained winds and position estimates are rounded to the nearest 5 units (knots, miles, or kilometers), following the convention used in the India Meteorological Department and Joint Typhoon Warning Center's operational products for each storm. All other units are rounded to the nearest digit.

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