Very Severe Cyclonic Storm Hamoon
Hamoon near peak intensity while approaching Bangladesh on 24 October
Meteorological history
FormedOctober 21, 2023
DissipatedOctober 25, 2023
Very severe cyclonic storm
3-minute sustained (IMD)
Highest winds120 km/h (75 mph)
Highest gusts140 km/h (85 mph)
Lowest pressure985 hPa (mbar); 29.09 inHg
Category 2-equivalent tropical cyclone
1-minute sustained (SSHWS/JTWC)
Highest winds155 km/h (100 mph)
Highest gusts175 km/h (110 mph)
Lowest pressure978 hPa (mbar); 28.88 inHg
Overall effects
Fatalities17
Missing178
Damage$567 million (2023 USD)
Areas affectedBangladesh, Myanmar, Northeast India
Part of the 2023 North Indian Ocean cyclone season

Very Severe Cyclonic Storm Hamoon[lower-alpha 1] (/hɑːˈmun/) was a relatively strong tropical cyclone that made landfall in Bangladesh. The fourth named storm of the 2023 North Indian Ocean cyclone season, Hamoon formed from a low-pressure area over the west-central Bay of Bengal on 21 October 2023. It suddenly strengthened, peaking at Category 2-equivalent intensity with winds of 155 km/h (100 mph) in terms of 1-minute sustained winds. Making landfall, Hamoon rapidly weakened once inland and bringing severe rainfall in Bangladesh.

Meteorological history

Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
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
triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

The storm intensified into a deep depression on 22 October, and into a cyclonic storm on October 23.[2] Hamoon reached its peak intensity on October 24, with sustained winds of 120km/h (75 mph) and gusts of 140 km/h (85 mph).[3] At approximately 6:00 pm on Tuesday, 24 October 2023, the leading edge of the intense cyclonic storm Hamoon made landfall on the Bangladesh coast, bringing strong winds and intense rainfall to Cox's Bazar.[4] As per Bulletin No. 12 issued by the Bangladesh Meteorological Department, the cyclone has downgraded from a severe cyclone to a regular cyclone.

Impact

Bangladesh

Cyclone Hamoon brought heavy rainfall and strong winds to coastal Bangladesh. So far seventen killed and many injured.[5]

Response

Bangladesh

The government has implemented comprehensive measures to evacuate 1.5 million people from vulnerable areas, relocating them to government shelters across 10 coastal districts in preparation for Cyclone Hamoon.[6] The Chittagong Port Authority has taken precautionary measures by dispatching 88 ships to the deep sea in order to safeguard against potential damages from Cyclone Hamoon.[7]

Satellite infrared imagery of Cyclone Hamoon rapidly intensifying off the coast of Bangladesh

Volunteers from various organizations, including the Bangladesh Water Development Board, Fire Service, Red Crescent, and other volunteer groups, are prepared to handle the situation. Additionally, the local administration has urged fishermen to seek safe shelter through loudspeakers, and launches have been instructed to anchor in secure positions. The Bangladesh Inland Water Transport Authority (BIWTA) took the precautionary step of suspending the movement of all types of vessels in the Barisal division on Tuesday.[8][9]

India

Several districts of Tamil Nadu are expected to experience heavy rainfall for the next two days as cyclonic storm Hamoon is anticipated to further intensify. A yellow warning has been issued for six districts in the state.[10]

See also

Notes

  1. ↑ The name was suggested by Iran, which is a Persian word referring to inland desert lakes or marshlands. These are formed as natural seasonal reservoirs in areas adjoining the Helmand basin.[1]

References

  1. ↑ "How did Cyclone Hamoon get its name?". The Business Standard. 24 October 2023. Archived from the original on 29 December 2023. Retrieved 24 October 2023.
  2. ↑ "Depression in Bay turns into cyclone Hamoon". The Daily Star. 24 October 2023.
  3. ↑ "'Cyclone Hamoon' takes shape over Bay of Bengal. 10 things to know". Hindustan Times. 23 October 2023.
  4. ↑ "Heavy rainfall, gusty wind hit Cox's Bazar as Hamoon starts making landfall". The Business Standard. 24 October 2023. Retrieved 24 October 2023.
  5. ↑ "seventeen killed as Hamoon lashes Ctg". The Daily Star. 26 October 2023. Retrieved 26 October 2023.
  6. ↑ "Bangladesh evacuating 1.5M people as Cyclone Hamoon approaches". www.aa.com.tr. Retrieved 24 October 2023.
  7. ↑ "88 ships set sail for deep sea to dodge potential damage from Cyclone Hamoon". The Business Standard. 24 October 2023. Retrieved 24 October 2023.
  8. ↑ "Millions urged to evacuate as Bangladesh braces for Cyclone Hamoon-Xinhua". english.news.cn. Retrieved 24 October 2023.
  9. ↑ "Cyclone Hamoon: Vessel movement in Barisal suspended". dhakatribune. Retrieved 24 October 2023.
  10. ↑ Bureau, DTNEXT (24 October 2023). "Cyclone Hamoon: Six districts of TN to receive heavy rain; yellow warning issued". www.dtnext.in. Retrieved 24 October 2023.
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