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Tornadoes
Tornadoes can be devastating, potent reminders of the awesome power of nature. In this photo, a rare "mother ship" cloud formation is seen over Childress,Texas. This is a sign of a supercell thunderstorm, a type of storm that often kicks off tornadoes with winds exceeding 200 miles an hour (322 kilometers an hour). Tornadoes can form over wide swaths of land and sea.
龍卷風
龍卷風具有很大的破壞性，提醒人們大自然擁有怎樣令人敬畏的力量。這幅照片在美國德克薩斯州拍攝，展現了柴爾德里斯上空出現的罕見云型，彷佛一艘空中的航空母艦。這種云的出現預示著一場超大胞雷雨。超大胞雷雨經常引發龍卷風，風速可超過每小時200英里(約合每小時322公里)。龍卷風通常在寬闊的陸地和海洋上空形成。
