Steam devil

Figure 3. Steam devil at Big Island, Hawaii. The large plumes of vapour are caused by lava entering the ocean.

A steam devil is a small, weak whirlwind over water (or sometimes wet land) that has drawn fog into the vortex, thus rendering it visible. They form over large lakes and oceans during cold air outbreaks while the water is still relatively warm, and can be an important mechanism in vertically transporting moisture.

单词	Steam whirl
释义	Steam whirl 英语百科 Steam devil A steam devil is a small, weak whirlwind over water (or sometimes wet land) that has drawn fog into the vortex, thus rendering it visible. They form over large lakes and oceans during cold air outbreaks while the water is still relatively warm, and can be an important mechanism in vertically transporting moisture.
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Steam whirl

Steam devil