Cyclone Kelvin made landfall in northwest Australia as a category 1 storm on 18 February 2018. After landfall, tropical cyclones typically weaken due to the exhaustion of a moisture supply. Cyclone Kelvin continued to intensify with winds gusting to 100 knots and significant flooding well inland. A distinct eye feature also formed well after landfall. An analysis of meteorological satellite, MERRA2 reanalysis, and Global Data Assimilation System (GDAS) data was employed in a case study of Cyclone Kelvin. Using a cyclone phase diagram, it is confirmed that a warm core structure was maintained as Cyclone Kelvin continued to move inland, even through a period of brief inland intensification.

气旋开尔文于 2018 年 2 月 18 日以 1 级风暴的形式在澳大利亚西北部登陆。登陆后，热带气旋通常会因水分供应枯竭而减弱。气旋开尔文继续增强，风速高达 100 节，内陆水井大量涌入。登陆后也形成了明显的眼部特征。在气旋开尔文案例研究中采用了对气象卫星、MERRA2 再分析和全球数据同化系统 (GDAS) 数据的分析。使用气旋相图可以确认，随着气旋开尔文继续向内陆移动，即使经过了短暂的内陆强化期，仍保持着温暖的核心结构。