Radar (Past & Forecast)
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Oklahomans share stories of survival, confront tornado devastation
Storms cut power in southern Ontario, severe risk continues Wednesday
WATCH: Satellite imagery of powerful Midwest storm
Canadians advised to prepare for tornadoes despite lower risk than U.S.
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
