七大自然奇迹现象 7 Phenomenal Wonders

6、乳房云(Mammatus Clouds)


乳房云(Mammatus Clouds)

　　乳房云的出现是不祥的预兆，它经常预兆着暴风雨或其他恶劣天气的出现，乳房云中主要包含着的是冰晶体，它能延着一个方向伸展数百英里，个别乳房云结构能够保持静止不动10-15分钟。

True to their ominous appearance, mammatus clouds are often harbingers of a coming storm or other extreme weather system. Typically composed primarily of ice, they can extend for hundreds of miles in each direction and individual formations can remain visibly static for ten to fifteen minutes at a time. While they may appear foreboding they are merely the messengers - appearing around, before or even after severe weather.