Puzzling Weather

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Thunderstorms generally develop with positive electric charge near their top and negative charge from their middle to cloud base. While all lightning is dangerous, it is the positive strikes that are the most dangerous. Not only are positive strikes generally more intense, they often strike well outside of the parent storm. ©University Corporation for Atmospheric Research, Photo by David Baumhefner. Want to know more about lightning? Go to JetStream - an Online School for Weather.

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