Bangladesh, due to its unique geographic location, suffers from devastating tropical cyclones frequently. The funnel-shaped northern portion of the Bay of Bengal causes tidal bores when cyclones make landfall, and thousands of people living in the coastal areas are affected. Some of the most devastating natural disasters in recorded history with high casualties were tropical cyclones that hit the region now forming Bangladesh. Among them, the 1970 Bhola cyclone alone claimed more than 500,000 lives.
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Bangladesh lacks any satellites of its own. The three satellite ground stations, located in Betbunia, Talibabad, and Mohakhali, are used to receive feeds from other satellites. Bangladesh Space Research and Remote Sensing Organisation (SPARRSO), a Government agency under the ministry of defence[1] provides storm predictions and early warnings using feeds from NASA and NOAA's satellites. The warnings are usually given in a scale of 10, with the number10 being given for the deadliest storms.
A detailed program for storm prevention was outlined by the Government following the cyclone of 1991. A Comprehensive Cyclone Preparedness Programme (CPP) is jointly planned, operated, and managed by the Ministry of Disaster Management and Relief and the Bangladesh Red Crescent Society, and a volunteer force of more than 32,000 are trained to help in warning and evacuation in the coastal areas.[2] Around 2,500 cyclone shelters have been constructed in the coastal regions. The shelters are built on elevated platforms, and serve the dual role of schools or community centers during normal weather. In Patenga, Chittagong, the coast has been heavily protected with concrete levees. Also, an afforestation has been initiated in the coastal regions to create a green belt.
Cyclones are a product of heat and moisture, which can last up to 24 hours. Low pressure is the main weather associated with cyclones. Cyclones can cause devastating damage, and are known to knock out electric and water supplies. It is recommended people have a supply kit ready in case a cyclone hits their area.
SL. No. | Date/Year | Type of Disturbance | Relevant Information | Reference/Source of Information |
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1. | 1582 AD (Date and month N/A) | Severe Cyclonic Storm with a core of hurricane winds | Coast: The cyclone crossed the coast of Backerganj (Sarkar Bala).
Loss and damage: People killed = 200,000. The destruction was reported to have been caused by a storm wave. According to Banglapedia, a five-hour hurricane and thunderstorm destroyed houses and boats in the coast near Bakerganj (presently in Barisal and Patuakhali).[2] Only Hindu temples with a strong foundation were spared. |
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2. | 1585 (Date and month N/A) | N/A | A tropical storm hit the eastern side of Bakerganj (now Barisal) near the mouth of the Meghna River estuary, causing devastation of crops.
Casualty: unknown. |
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3. | 1699 (Date and month N/A) | Severe Cyclonic Storm | Coast: The cyclone crossed the Sundarbans coast
Loss and damage: People killed = 50,000. Other information are not available. |
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4. | 1760 (Date and month N/A) | Severe Cyclonic Storm | Coast: The cyclone crossed the Sundarbans coast
Loss and damage: N/A. The whole area was almost damaged. Other information are not available. |
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5. | 1765 (Date and month N/A) | Severe Cyclonic Storm | Coast: The cyclone crossed Chittagong coast
Loss and damage: N/A. The whole area was destroyed. Other information are not available. |
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6. | 1767 (Date and month N/A) | Severe Cyclonic Storm | Coast: The cyclone crossed Backerganj (Barisal) coast.
Surge height: 13.03 m (43 ft) Loss and damage: People killed: 30,000. Other information are not available. |
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7. | May–June, 1797 (Actual date N/A) | Severe Cyclonic Storm with a core of hurricane winds | Coast: The cyclone crossed Chittagong coast
Loss and damage: Every house in the area was destroyed. Two ships were sunk in Chittagong Port. Other information are not available. |
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8. | June, 1822 (Actual date N/A) | Severe Cyclonic Storm with a core of hurricane winds | Coast: The cyclone crossed the coast of Backerganj (Barisal), Sarkar Bala.
Loss and damage: People killed = 50,000. Cattle killed = 100,000. Storm wave swept away the collectorate records. Other information are not available. |
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9. | June 2, 1823 | Cyclonic Storm | Coast: The cyclone crossed Chittagong coast
Other information are not available. |
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10. | June 8, 1824 | Heavy Storm (Severe Cyclonic Storm) | Coast: The cyclone crossed Chittagong coast
Other information are not available. |
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11. | October 31, 1831 | Severe Cyclonic Storm | Coast: The cyclone crossed Barisal coast (Grazed the Balasore-Orissa coast)
Surge height: 2.12-4.55 m (7–15 ft) Loss and damage: People killed = 22,000 (along the coast of India and Bengal) Cattle killed > 50,000 Other information are not available. |
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12. | June 3–5, 1839 | Cyclonic Storm | Coast: Crossed Head Bay (Bengal coast)
Other information are not available. |
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13. | September 19–21, 1839 | Cyclonic Storm | Coast: The storm passed north across Sundarbans coast between Calcutta and Barisal.
Other information are not available. |
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14. | May 11, 1844 | Cyclonic Storm (Gale) | Coast: Crossed Noakhali and Chittagong coast.
Other information are not available. |
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15. | May 12–13, 1849 | Cyclonic Storm (Gale) | Coast: The cyclone crossed Chittagong coast
Other information are not available. |
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16. | April 23–28, 1850 | Cyclonic Storm | Formation: Formed over West Nicobars.
Coast: It moved north to Bengal from West Nicobars. Other information are not available. |
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17. | May 12–15, 1852 | Cyclonic Storm | Formation: Formed near 15°N.
Coast: It moved northward and crossed the Sundarbans coast; the center passed 39 miles (63 km) east of Calcutta Other information are not available. |
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18. | May 13–17, 1869 | Cyclonic Storm | The storm moved northwestward from Cape Negrais to Bengal and crossed the Bengal coast
Other information are not available. |
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19. | June 5–10, 1869 | Cyclonic Storm | Coast: From the North Bay the cyclone passed over Bengal.
Other information are not available. |
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20. | October 1872 (Date was not available) | Cyclonic Storm | Coast: The cyclone hit the coast of Cox's Bazar
Other information are not available. |
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21. | October 29-November 1, 1876 | Severe Cyclonic Storm with a core of hurricane winds. | Coast: The cyclone crossed the coast of Backerganj (present Barisal) near Meghna estuary.
Maximum wind: 220 km/h (119 knots) Surge height: 3-13.6 m (10–45 ft) According to Banglapedia, a cyclone with a storm-surge of 12.2 metres (40 ft) hit Meghna River estuary near Chittagong, Barisal, and Noakhali.[2] Casualty: about 200,000. The storm also caused epidemic and famine, and vast property damage. |
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This is a partial list of the tropical cyclones in Bangladesh or the historical region of Bengal in general. Some of the years and dates may be slightly incorrect. Most of the figures have been taken from Banglapedia.[2]