An aurora (borealis or australis) is a natural light display in the sky, predominantly seen in the high latitude regions (¿ ?) , produced when solar wind in the form of currents of protons and electrons precipitates into the upper atmosphere and causes atmospheric particles to ionize emitting lights of different colors and forms.
A tornado is a violent storm with very strong winds which move in a circle. It is a violent rotating column of air extending from a thunderstorm to the ground.
Hurricanes are large, swirling storms producing winds of 119 kilometers per hour or higher. Hurricanes form over warm ocean waters. Sometimes they reach land and push a wall of ocean water ashore.
A rainbow is an arch of different colours that appears in the sky when the sun shines through rain.