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WATCH: Satellite imagery of powerful Midwest storm
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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
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To see nature's wildest outbursts from a unique perspective, watch Angry Planet on The Weather Network tonight at 7pm & 10pm.
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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.
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