A natural phenomenon is an observable event which is not man-made. Examples include: sunrise, weather, fog, thunder, tornadoes; biological processes, decomposition, germination; physical processes, wave propagation, erosion; tidal flow, and natural disasters such as electromagnetic pulses, volcanic eruptions, and earthquakes.[1][2]

Exposure to forces of nature[weasel words] resulted in about 214,000 deaths in 2010, up from 31,000 in 1990.[3]

Types of natural phenomena include, but are not limited to, the following.