Analysis and numerical simulation of a supercell tornado at the Hong Kong adjacent waters

Meteorological applications

article

P. W. Chan¹  K. K. Hon¹  P. Robinson³  K. Kosiba³  J. Wurman⁵  Q. S. Li⁶ 

[1] Hong Kong Observatory;Contribution: Data curation;Targeted Meteorological Systems;Contribution: Formal analysis;Center for Severe Weather Research;Department of Architecture and Civil Engineering, City University of Hong Kong;Contribution: Conceptualization ,(equal), Project administration

关键词: forecasting;    modelling;    remote sensing;   

DOI  :  10.1002/met.2056

学科分类：社会科学、人文和艺术（综合）

来源: Wiley

【 摘 要 】

A tornado/waterspout associated with a supercell thunderstorm was observed in the adjacent waters of southern China on the evening of 18 April 2019. The case was documented using surface weather observations and Doppler radar data. A weather station near the tornado/waterspout, recorded wind gusts corresponding to hurricane intensity for a few seconds, never observed before in the region. The Doppler velocity associated with the tornado/waterspout was analysed and the vertical profile of the velocity could be very useful for wind engineering applications in the region. Dual-polarization observations also were analysed and exhibited some similar signatures documented in supercell tornadoes in other parts of the world. Predictability of the tornado/waterspout was studied using a numerical weather prediction model. It showed that the location and timing of the waterspout/tornado could be roughly reproduced, and the model might be used to give earlier alerting to the vessels operating in the south China coastal waters.

【 授权许可】

CC BY|CC BY-NC|CC BY-NC-ND