Deep Depression BOB 05 (2024)

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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 weak remnants of Typhoon Yagi would begin tracking towards the North Indian Ocean, [1] causing the India Meteorological Department (IMD) to start tracking it as a cyclonic circulation over Myanmar on 11 September. [2] [3] This disturbance coalesced into a low-pressure area the next day, [4] further developing into a well-marked low-pressure just a few hours later. [5] Soon after, it intensified into a depression. [6] The following day, the depression further strengthened into a deep depression over Bangladesh and West Bengal. [7]

As it was located in the westerlies of the southwest monsoon, on September 16, BOB 05 exhibited persistent deep convection driven by mid-level anticyclonic shear. [8] A few hours later, the system weakened to a depression as it drifted slowly westward over western India. [9] The depression subsequently lost organization, degenerating into a well-marked low pressure area over Madhya Pradesh by 00:00 UTC on September 18. [10]

Impact

Bangladesh

The storm produced heavy rainfall in southeastern Bangladesh. [11] Seven people were killed by landslides in Cox's Bazar District. [12] Rainfall flooded some 200 villages in Cox's Bazar Sadar. Six other upazilas remained flooded. In Ukhia Upazila, flooding affected over 50,000 people across 40 villages. Among them were the Haldia Palong and Jaliapalong areas constituting the most affected population of 35,000. Some 10,000 residents across eight neighbourhoods including Nuniarchara, which are flood-prone, were also affected. Flooding in Chakaria Upazila also disrupted 20,000 residents; agriculture land were also badly damaged. [13] Eleven deaths were recorded and 100 missing fishermen in Noakhali District, 35,441 were relocated to camps, and 1.5 million people were trapped by floodwaters. [14] [15] Two people were killed when a boat capsized in Jagannathpur Upazila. [15]

Over a dozen fishing trawlers carrying an estimated 500 people off the coast of Cox's Bazar were unaccounted since 11 September. [16] On 15 September, most of these fishermen returned to land but 250 others on 23 trawlers remained missing. [17] At least eight trawlers capsized in rough seas; some fishermen swam to shore while many others were missing. Two bodies were found at Ukhia's Inani Beach while three were recovered along the shores of Nazirartek, Pechar Dwip and Kolatoli Square. [13] A search operation for the missing was initiated by the Bangladesh Navy. [17] Indian fishermen also rescued 12 Bangladeshi nationals stranded in the bay due to rough seas. [18]

India

On 14 September, the IMD said light to moderate rain was possible in West Bengal while some areas might experience extreme rainfall. Intense rainfall was expected in Odisha, Jharkhand, Bihar, Chhattisgarh, Mizoram, Tripura, Assam and Meghalaya from 14 to 16 September. [19] A "red" alert was later issued for West Bengal and Odisha with a greater expectation for intense rain. [20] In Kolkata, 72.4 mm (2.85 in) of rain was recorded over a 24-hour period. [21] Over 125.8 mm (4.95 in) of rain was measured between 13 and 14 September in the city. [22] Due to the heavy rains , the Damodar Valley Corporation released more than 3.5 lakh cusec (9,911 cubic metres per second) of water from its dams, resulting in inundation of Birbhum, Bankura, Howrah, Hooghly, North and South 24 Parganas, Purba and Paschim Medinipur, and Paschim Bardhaman districts of West Bengal. 28 people were killed due to these floods and 25,000 people had to moved to safer areas. [23]

See also

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References

  1. ↑ "Remnants of cyclone may merge with storm in Bay of Bengal". 10 September 2024. Retrieved 12 September 2024.
  2. ↑ Tropical Weather Outlook (PDF) (Report). New Delhi, India: India Meteorological Department. 12 September 2024. Retrieved 12 September 2024.
  3. ↑ "How Pacific Cyclone Yagi might bring another wet spell in Delhi next week". India Today. 14 September 2024. Retrieved 15 September 2024.
  4. ↑ Tropical Weather Outlook (PDF) (Report). New Delhi, India: India Meteorological Department. 13 September 2024. Retrieved 13 September 2024.
  5. ↑ Tropical Weather Outlook (PDF) (Report). New Delhi, India: India Meteorological Department. 13 September 2024. Retrieved 13 September 2024.
  6. ↑ Tropical Weather Outlook (PDF) (Report). New Delhi, India: India Meteorological Department. 13 September 2024. Retrieved 13 September 2024.
  7. ↑ Tropical Weather Outlook (PDF) (Report). New Delhi, India: India Meteorological Department. 14 September 2024. Retrieved 14 September 2024.
  8. ↑ Tropical Weather Outlook (PDF) (Report). New Delhi, India: India Meteorological Department. 16 September 2024. Retrieved 16 September 2024.
  9. ↑ Tropical Weather Outlook (PDF) (Report). New Delhi, India: India Meteorological Department. 17 September 2024. Retrieved 17 September 2024.
  10. ↑ Tropical Weather Outlook (PDF) (Report). New Delhi, India: India Meteorological Department. 18 September 2024. Retrieved 18 September 2024.
  11. ↑ "Flooding, landslides kill 7 people in Bangladesh". Pakistan Broadcasting Corporation. 13 September 2024. Retrieved 15 September 2024.
  12. ↑ "Flooding, landslides kill 7 people in Bangladesh". Pakistan Broadcasting Corporation. 13 September 2024. Retrieved 14 September 2024.
  13. 1 2 "5 fishermen die, 70 go missing due to inclement weather in Cox's Bazar". The Business Standard. 14 September 2024. Retrieved 15 September 2024.
  14. ↑ "Nōẏākhālītē phēra ban'yā paristhitira abanati" নোয়াখালীতে ফের বন্যা পরিস্থিতির অবনতি [Flood situation worsens again in Noakhali]. Desh Rupantor (in Bengali). 14 September 2024. Retrieved 15 September 2024.
  15. 1 2 "কক্সবাজারসহ তিন জেলায় ৬ মৃত্যু নিখোঁজ শতাধিক". Samakal (in Bengali). 14 September 2024. Retrieved 14 September 2024.
  16. ↑ "Baṅgōpasāgarē ṭralāraḍubi: Nikhōm̐ja 5 śatādhika jēlē, 2 janēra mr̥tyu" বঙ্গোপসাগরে ট্রলারডুবি: নিখোঁজ ৫ শতাধিক জেলে, ২ জনের মৃত্যু [Trawler sinks in Bay of Bengal: 500 fishermen missing, 2 dead]. Amader Shomoy. 14 September 2024. Retrieved 15 September 2024.
  17. 1 2 "Baṅgōpasāgarē 23 mācha dharāra ṭralāra nikhōm̐ja, ḍubēchē ēkaṭi" বঙ্গোপসাগরে ২৩ মাছ ধরার ট্রলার নিখোঁজ, ডুবেছে একটি [23 fishing trawlers missing, one sunk in Bay of Bengal]. Risingbd (in Bengali). 15 September 2024. Retrieved 15 September 2024.
  18. ↑ "Baṅgōpasāgarē bhāsamāna 12 bānlādēśikē ud'dhāra karalō bhāratīẏa jēlērā" বঙ্গোপসাগরে ভাসমান ১২ বাংলাদেশিকে উদ্ধার করলো ভারতীয় জেলেরা [Indian fishermen rescued 12 Bangladeshis floating in the Bay of Bengal]. Daily Ajker Darpon (in Bengali). 15 September 2024. Retrieved 15 September 2024.
  19. ↑ "Deep depression formed near Kolkata. IMD issues heavy rainfall and wind warning for 9 states". The Economic Times. 14 September 2024. Retrieved 15 September 2024.
  20. ↑ Kumar, Abhijeet (14 September 2024). "IMD issues 'red' alert for West Bengal and Odisha, 'orange' alert for Delhi". Business Standard. Retrieved 15 September 2024.
  21. ↑ "Heavy rains lash Kolkata; more showers in forecast". The Hindu.
  22. ↑ "Deep depression brings over 125 mm of rain to Calcutta, halts traffic in parts of the city". The Telegraph. 14 September 2024. Retrieved 15 September 2024.
  23. ↑ "Damodar Valley Corporation reduces release of water, Bengal flood situation still grim". The Deccan Herald.
Deep Depression BOB 05
BOB 05 2024-09-14 0600Z.jpg
Deep Depression BOB 05 at its peak intensity on 14 September
Tropical cyclones of the 2024 North Indian Ocean cyclone season
2024 North Indian Ocean cyclone season summary.png
SCS
Remal
D
BOB 02
DD
LAND 01
CS
Asna
D
BOB 03
DD
BOB 04
DD
BOB 05
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