These images are from October 30, 2004 during the "40 days of rain". The atmosphere around the islands was unstable, forming a thunderstorm over much of the southern portion of Oahu. The thunderstorm was locked into place due to the terrain. Manoa in particular was hit hard. These images were taken soon after Manoa stream overflowed its banks, pushing cars and other debris aside. The cars continued to move with the rushing water, until an outside force (the tree) stopped it. Newton's first law could be applied to the debris found throughout the valley.