Lightning storm, Mushroom cloud. 雷暴, 蘑菇雲

Blast: A lightning storm lights up the skies above southern Sardinia creating the impression of a nuclear mushroom cloud

Eerie: The mushroom cloud looms over the hills of southern Sardinia
Lightning storm generates terrifying nuclear bomb-style mushroom cloud in the skies above Sardinia | Mail Online
Read more: http://www.dailymail.co.uk/news/article-2680878/Lightning-storm-generates-terrifying-nuclear-bomb-style-mushroom-cloud-skies-Sardinia.html#ixzz36WYyP32R
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Thunderstorm - Wikipedia, the free encyclopedia

A thunderstorm, also known as an electrical storm, a lightning storm, or a thundershower
http://en.wikipedia.org/wiki/Thunderstorm
雷暴 - 維基百科，自由的百科全書
http://zh.wikipedia.org/wiki/%E9%9B%B7%E6%9A%B4
Mushroom cloud - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Mushroom_cloud
蘑菇雲 - 維基百科，自由的百科全書
http://zh.wikipedia.org/wiki/%E8%98%91%E8%8F%87%E9%9B%B2

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