Weather search

City, ZIP or country

Severe weather

Add to iGoogle

Our severe weather centres

Weather dictionary


In the Northern Hemisphere, it is known as the aurora borealis or Northern Lights. It is seen as a bright display of constantly changing light near the magnetic poles of each hemisphere. It is created by the radiant energy emission from the sun. By reaching earth's atmosphere the hit oxygen or nitrogen molecules start to glow.

Aurora borealis
Aurora borealis