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Numerical simulation of physical and dynamical characteristics associated with the severe thunderstorm on April 5, 2015 at Kushtia and Jhenaidah

Author

Listed:
  • Samarendra Karmakar

    (Bangladesh Centre for Advanced Studies (BCAS)
    National Oceanographic and Maritime Institute (NOAMI))

  • Dewan Abdul Quadir

    (National Oceanographic and Maritime Institute (NOAMI)
    Uttara University)

  • Mohan Kumar Das

    (National Oceanographic and Maritime Institute (NOAMI)
    BUET)

Abstract

The paper deals with the study of the physical and dynamical characteristics of a severe thunderstorm, which had occurred on April 5, 2015, at about 2100 UTC in the southwestern Bangladesh with location around 23.3–23.7N and 89.0–89.4E within the upazilas (sub-districts) of Kumarkhali and Shailkupa under the districts of Kushtia and Jhenaidah, respectively. The thunderstorm was associated with numerous hails of large size. More than 5000 birds which used to live in the bird sanctuary at Shailkupa and 22,011 birds in Chhaglapara Bird Sanctuary of Kumarkhali died as they were hit by the hails. Large hails also damaged crops, houses and forests over the thunderstorm hit areas. The evolution of the thunderstorm is studied by the WRF model, which is initialized using the National Centers for Environmental Prediction Final reanalysis data of 0000 UTC of April 5, 2015. The simulated results provide a basis to study the physical and dynamical characteristics of the thunderstorm, which are generally not identified by the meteorological observations which are too sparse. The model has captured a micro-low over Kumarkhali and its neighborhood, which favored the occurrence of the severe thunderstorm. The model simulated rainfall is about 26 mm near the place of occurrence, which matches well with the area where the reflectivity of hydrometeor is maximum. The convective available potential energy is found to be 1600 J kg−1 at 1730 UTC near the place of occurrence of the thunderstorm; this indicates high atmospheric instability over the thunderstorm location for the formation of the thunderstorm. The vertical velocity, convergence, cloud water mixing ratio and the ice water mixing ratio and their vertical extensions are found to be satisfactory and responsible for the occurrence of large hails associated with the thunderstorm.

Suggested Citation

  • Samarendra Karmakar & Dewan Abdul Quadir & Mohan Kumar Das, 2017. "Numerical simulation of physical and dynamical characteristics associated with the severe thunderstorm on April 5, 2015 at Kushtia and Jhenaidah," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 86(3), pages 1127-1146, April.
  • Handle: RePEc:spr:nathaz:v:86:y:2017:i:3:d:10.1007_s11069-016-2733-y
    DOI: 10.1007/s11069-016-2733-y
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    References listed on IDEAS

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    1. S. Kiran Prasad & U. Mohanty & A. Routray & Krishna Osuri & S. Ramakrishna & Dev Niyogi, 2014. "Impact of Doppler weather radar data on thunderstorm simulation during STORM pilot phase—2009," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 74(3), pages 1403-1427, December.
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