How Do Thunderstorms Form?

By Tiffany Means, About.com Guide

Whether you happen to be a spectator or a "spook," chances are you've never mistaken the sight or sounds of an approaching thunderstorm. And it's no wonder why. Over 40,000 occur worldwide every day. Of that total, 10,000 occur daily in the United States alone.

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• Thunderstorms
• Thunderstorm Climatology
• Thunderstorm Ingredients
• The Three Stages
• 1. The Towering Cumulus Stage
• 2. The Mature Stage
• 3. The Dissipating Stage

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