Characteristics and possible formation mechanisms of severe storms in the outer rainbands of Typhoon Mujiga (1522)

• DOI: 10.1007/s13351-017-6043-4
• Publication Date: 2017-06-28T00:08:16Z
• Authors: Bingyun Wang; Ming Wei; Wei Hua; Yongli Zhang; Xiaohang Wen; Jiafeng Zheng; Nan Li; Han Li; Yu Wu; Jie Zhu; Mingjun Zhang
• Keywords: Eye; Typhoon; Rainband

To better understand how severe storms form and evolve in the outer rainbands of typhoons, this study, we investigate evolutionary characteristics possible formation mechanisms for Typhoon Mujigae, which occurred during 2–5 October 2015, based on NCEP–NCAR reanalysis data, conventional observations, Doppler radar data. For far from inner core (eye eyewall) Mujigae (distance approximately 70–800 km), wind speed first increased with radius expanding core, then decreased as continued to expand. The Rankine Vortex Model was used explore such variations speed. areas strong stormy were mainly located northeast quadrant overlapped high winds within 300–550 km away where conducive development storms. A convective cell developed into waterspout at 500 when strengthening before it made landfall. Two cells two tornadoes 350 after echo bands enhanced 60 dBZ mesocyclones induced tornadoes. echoes gradually weakened weakened. tops parent clouds elevated first, suddenly dropped about 20 min appeared. Thereby, cloud top variation has potential be an early warning tornado occurrence.