Weather Systems
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
Crews wrap up search for Oklahoma tornado survivors
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
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