Search for survivors of Oklahoma tornado wrap up as homeowners confront devastation.
WATCH: Satellite imagery of powerful Midwest storm
Canadians advised to prepare for tornadoes despite lower risk than U.S.
Severe thunderstorms in parts of southern Ontario
To see nature's wildest outbursts from a unique perspective, watch Angry Planet on The Weather Network tonight at 7pm & 10pm.
A typical thunderstorm is about 15 miles in radius and lasts for approximately half an hour. Lightning from a thunderstorm can be witnessed as far as 10 miles away outside its radius.
Storm
