Abstract
The Guerilla-heavy rainfall (GHR) occurrence has increased in numbers. In 2008, five people died due to the occurrence of GHR in Toga River, Japan. It is very important to GHR and predict the occurrence of The rapid scan observation (RSO) of Himawari-8 is very useful to investigate the cloud development process because of its fine temporal and spatial resolution (0.5 - 2 km, 2.5 minutes). To maximize the utilization of RSO of Himawari - 8 data, in this study we utilize some of the parameters to investigate the relationship between cloud top condition and hydrometeor type aloft. The preliminary investigation shows a potential correlation between hydrometeor types aloft and cloud top conditions.