Tropical Depression Kilo has left the main Hawaiian islands, but only after dumping a large amount of rain across the state. Published on September 9, 2015 in Tropical depression causes Hawaiian floodsFull resolution (500 × 334) Tropical Depression Kilo has left the main Hawaiian islands, but only after dumping a large amount of rain across the state. Tropical Depression Kilo has left the main Hawaiian islands, but only after dumping a large amount of rain across the state.