Flash floods occur when heavy rain falls down non-stop until an area is overflowed by water. The areas are likely the lower-lands. The quick change from a calm area to a raging river is what catches people off guard, making flash floods very dangerous. The water overflow is caused by the earth’s difficulty in absorbing huge amount of water at a certain time. It is also caused by blocked drains.

Thunderstorms consists of a raging storm, accompanied by loud thunder, flashes of lightning and extremely heavy rain. They occur around April until May and October until November. This is due to the monsoon changes (seasonal winds). It happens around 15 to 30 minutes at a time. Besides lightning and thunder, thunderstorms may also cause hailstorms, heavy rain which causes heavy floods, tornados, flash floods and soil erosion.