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, hurricanes and earthquakes.
Over many intervals of time, natural phenomena have been observed by a series of countless events as a feature created by nature.
The act of:
Violent meteorological phenomena are called storms. Regular, cyclical phenomena include seasons and atmospheric circulation. climate change is often semi-regular.