The environment associated with significant tornadoes in Bangladesh

Bikos, Dan; Finch, Jonathan; Case, Jonathan L.

doi:10.1016/j.atmosres.2015.08.002

Cited by 24 publications

(25 citation statements)

References 35 publications

(46 reference statements)

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“…The first reported tornado occurred in the country in March 1875 [11] [16] [39] [42] in Mymensingh but available evidence (Table 2) indicate that two or more tornado occurred in anonymous location of the country that caused human fatalities [5] [16] [42]. Furthermore, According to the newspaper review reports, Ono [34] claims that Bangladesh has experienced more than 191 tornadoes between 1967 and 1996.…”

Section: History Of Tornadoes In Bangladeshmentioning

confidence: 99%

“…1973 Named after the three main areas that were destroyed in its path, the Manikganj, Singair and Nawabganj Tornado took the likes of 681 people on April 17, 1973 (BO, [5] [20] [28] [44]). Overall, the wide tornado destroyed the greater part of nine towns, including wiping out the entire large village of Balurchar.…”

Section: The Manikganj Singair and Nawabganj Tornadomentioning

confidence: 99%

“…Mowla [30] claims that the tornadoes were part of the same storm system, but separate from one another. Overall, once the estimated 263 deaths [30] from the Homna Upazila tornado were added into the 660 from the Dacca twister, the total death toll reached to 992 (PO (15-20 April-1969), [5] [30]).…”

Section: East Pakistan Tornado 1969mentioning

confidence: 99%

“…The tornado struck in the northeastern suburbs of the town Dhaka, killed an estimated 660 people and injured 4,000 population (PO, [5] [30]). Later about 109 people were added with the estimated 660 people dead instantly from the injured [30].…”

Section: East Pakistan Tornado 1969mentioning

confidence: 99%

“…The 1969 East Pakistan tornado hit the highly populated area on April 14 at Dhaka region (PO, [5] [30]). The tornado struck in the northeastern suburbs of the town Dhaka, killed an estimated 660 people and injured 4,000 population (PO, [5] [30]).…”

Section: East Pakistan Tornado 1969mentioning

confidence: 99%

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Chronological History and Destruction Pattern of Tornados in Bangladesh

Hosen¹

2016

AJEP

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Abstract:Bangladesh has been facing the severe tornado incidents from the historical ages due to its geographical location.In recent years, it becomes more frequent; even hit the land more than six times in a year. The study has been conducted based on critical review and analysis of secondary data. This review paper has been carried out to recognize the chronology and frequency within a certain period of time to identify the destruction pattern of tornadoes in the country. From 1865-2014 the country has been faced more than 250 tornadoes reported, in which 20 events or more were enormously deadliest in fatalities and damages in the world history. Within these, 116 events has been recorded minimum 01 life lose. The recounted data figured out these events causes more than 9667 no. of human lives lost, injured 74702 and affected another 586306 lives of human. The regularity of tornado increases last few decades, basically after 1960. Sequential development of human civilization with global warming inspires the amount of warm and dry air is that responsible for tornado occurrence. During the tornado, the heavy rainfall is formed for moist weather which contains huge water drops. Sudden large runoff pollutes the existing local water system and the crop lands in the affected area. Improved weather forecasting, warning system, tornado risk zoning maps and ensuring proper building code for infrastructure may help to reduce the losses.

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Section: History Of Tornadoes In Bangladeshmentioning

confidence: 99%

Section: The Manikganj Singair and Nawabganj Tornadomentioning

confidence: 99%

Section: East Pakistan Tornado 1969mentioning

confidence: 99%

Section: East Pakistan Tornado 1969mentioning

confidence: 99%

Section: East Pakistan Tornado 1969mentioning

confidence: 99%

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Chronological History and Destruction Pattern of Tornados in Bangladesh

Hosen¹

2016

AJEP

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Climatology of the premonsoon Indian dryline

Akter

Tsuboki

2016

Intl Journal of Climatology

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A northeast‐ to southwest‐oriented surface dryline with a dew point gradient of 1 °C per 10 km develops along the eastern Indian coast during the entire premonsoon season. Deep, hot, dry air of up to 500 hPa moves from arid regions in Southwest Asia and Western India to the Bay of Bengal (BoB), and warm, shallow, moist air from the BoB penetrates below the dry air, forming an inclined moisture gradient aloft to the east and reaching the surface to the west. The slope of the gradient depends on the vertically increased southwesterly wind over the BoB, which gradually intensifies from March to May. Diurnal low‐level temperature variations over the land cause periodic movements of the dry‐moist air convergence zone at the surface in the zonal direction. During the premonsoon, the average east–west diurnal oscillation of the surface dryline is approximately 100 km, and the eastward movement is almost three times faster than the westward movement.

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Climatology of 500‐hPa geopotential height anomalies associated with May tornado outbreaks in the United States

Ćwik

McPherson

Richman

et al. 2022

Intl Journal of Climatology

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This study supports efforts directed toward research on large-scale atmospheric patterns and on the variability of tornado outbreaks. Specifically, we applied rotated principal component analysis to identify synoptic-scale patterns of 500-hPa geopotential height associated with tornado outbreaks in the United States. We created a database of historic tornado outbreaks using kernel density estimation on events composed of at least seven tornadoes of magnitude (E)F2 or higher (major tornado outbreaks) that occurred in May from 1950 to 2019 (91 events). Results of the analysis show that the first three principal components explained the majority, that is, 74% of the total variation. Based on the analysis of congruence coefficients, the Promax oblique transformation was chosen as the most representative rotation in portraying physically meaningful modes and resulted in three main atmospheric patterns. Two of these, to the best of our knowledge, have not been yet identified as the most representative of tornado outbreaks in any previous studies. Additionally, results suggest that although synoptic patterns associated with major May tornado outbreaks remain the same over time, partial variability in their geographic location exhibits some cyclical behaviour, especially on decadal and multidecadal scales. Identifying these patterns can serve as a first step in determining how they may change under anthropogenic climate change in the future. K E Y W O R D S 500-hPa geopotential height, climate change, climatology, large-scale atmospheric patterns, principal component analysis, tornado outbreaks, United States

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The environment associated with significant tornadoes in Bangladesh

Cited by 24 publications

References 35 publications

Chronological History and Destruction Pattern of Tornados in Bangladesh

Chronological History and Destruction Pattern of Tornados in Bangladesh

Climatology of the premonsoon Indian dryline

Climatology of 500‐hPa geopotential height anomalies associated with May tornado outbreaks in the United States

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