#Tanegashima radar images of TY #Nancy. "The size of eye diameter is about 25 to 35 kilometers", according to The Structure of Polygonal Eye of a Typhoon by Teruo Muramatsu. Probably one of the best documents about tropical cyclones that I found. Source: https://t.co/4lpbCeJuNI https://t.co/q6ozeLlfFi https://t.co/yvyQSfHQdG